Nondestructive testing used on timber in spain: A literature review
Keywords:
Acoustic techniques, probing techniques, stress waves, ultrasound waves, vibration techniquesAbstract
Nondestructive testing (NDT) includes several highly efficient techniques for the estimation of the physical and mechanical properties of structural timber. Apart from visual grading, scientific research using Nondestructive testing on timber has been used in Spain since the 1990s. Nondestructive testing can be used for two different purposes: timber grading and the assessment of existing timber structures. The most common devices used in Spain are portable ones based on ultrasound, stress waves, vibration and probing techniques. Many statistical linear models for estimating the mechanical properties of new sawn timber and timber from existing structures have been proposed. Furthermore, several factors that affect Nondestructive testing measurements have been studied (moisture content, temperature, specimen dimensions, sensors position-grain angle…) and adjustment factors have also been proposed. Species have been characterized for visual grading standards from the 1980s to date. The large number of research works using different species, devices and procedures shows the need of homogenization and standardization of Nondestructive testing use. This paper presents a review of research works using Nondestructive testing on timber in Spain, in order to add to knowledge, elucidate the concepts to unify Nondestructive testing used and promote research group collaboration in the near future.
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References
Abián, M.A.; Segura, G. 2016. Evaluación del estado estructural de la madera después de incendios mediante técnicas no destructivas [Assessment of fire-damaged structural timber by non-destructive testing]. In Proceedings of the IV Fire Engineering Conference. Valencia, Spain. 4 p.
Acuña, L.; Díez, M.R.; Martín, L.; Casado, M.; Basterra, L.A.; Ramón, G.; Relea, E. 2007. La técnica de transmisión ultrasónica aplicada a la madera estructural [Ultrasonic transmission technique applied to structural lumber]. In Proceedings of the 11° Congreso Español de Ensayos No Destructivos. Gijón, Spain, pp. 91–102.
Acuña, L.; Basterra, L.A.; Casado, M.; López, G.; Ramón, G.; Relea, E.; Martínez, C.; González, A. 2011. Aplicación del resistógrafo a la obtención de la densidad y la diferenciación de especies de madera (Application of resistograph to obtain the density and to differentiate wood species). Mater Construcc 61(303): 451-464. https://doi.org/10.3989/mc.2010.57610
Adell, F.J.; Hermoso, E.; Arriaga, F.; Richter, C. 2008. Comparison of the Spanish visual strength grading standard for structural sawn timber (UNE 56544) with the German one (DIN 4074) for Scots pine (Pinus sylvestris L.) from Germany. Holz Roh Werkst 66: 253-258. https://doi.org/10.1007/s00107-008-0241-9
Aira, J.R.; Villanueva, J.L.; Lafuente, E. 2019. Visual and machine grading of small diameter machined round Pinus sylvestris and Pinus nigra subsp. Salzmannii wood from mature Spanish forests. Mater Struct 52: 32. https://doi.org/10.1617/s11527-019-1330-4
Arce-Blanco, M. 2017. Estudio de las bóvedas encamonadas en Madrid capital y análisis de su comportamiento estructural [Plank timber arches study in Madrid capital and analysis of structural behavior]. Ph.D. Thesis, UPM, Madrid, Spain. URL: http://oa.upm.es/48247/1/MARINA_ARCE_BLANCO.pdf
Argüelles, R.; Arriaga, F. 1986. Norma de cálculo de estructuras de madera. [Timber structures design standard]. Ed. AITIM. Madrid, Spain. pp. 80-89.
Arriaga, F.; García, L.; Gebremedhin, K.G.; Peraza, F. 1992. Grading and load carrying capacity of old timber beams. In Proceedings of the International Summer Meeting, American Society of Agricultural Engineers. Charlotte, NC, USA. 25 p.
Arriaga, F.; Íñiguez-González, G.; Esteban, M. 2005a. Assessment of strength and stiffness properties using longitudinal stress wave on structural gross cross section timber of radiate pine (Pinus radiata D. Don). In Proceedings of the 14th International Symposium on Nondestructive Testing of Wood. Hannover, Germany. pp. 103-109.
Arriaga, F.; Esteban, M.; Relea, E. 2005b. Evaluación de la capacidad portante de piezas de gruesa escuadría de madera de conífera en estructuras existentes [Evaluation of the load carrying capacity of large cross section coniferous timber in standing structures]. Mater Construcc 55(280): 43-52. https://doi.org/10.3989/mc.2005.v55.i280.205
Arriaga, F.; Íñiguez-González, G.; Esteban, M.; Fernández-Golfín, J.I. 2006. Structural Tali timber (Erythrophleum ivorense A. Chev., Erythrophleum suaveolens Brenan.): assessment of strength and stiffness properties using visual and ultrasonic methods. Holz Roh Werkst 64: 357–362. https://doi.org/10.1007/s00107-006-0100-5
Arriaga, F.; Esteban, M.; Argüelles, R.; Bobadilla, I.; Íñiguez-González, G. 2007. Efecto de las gemas en la resistencia a flexión de piezas enterizas de madera [The effect of wanes on the bending strength of solid timber beams]. Mater Construcc 57(288): 61-76. URL: http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/viewFile/65/78
Arriaga, F.; Íñiguez-González, G.; Esteban, M.; Bobadilla, I. 2009. Proposal of a methodology for the assessment of existing timber structures in Spain. In Proceedings of the 16th International Symposium on Nondestructive Testing of Wood. Beijing, China. pp. 145-151.
Arriaga, F.; Íñiguez-González, G.; Esteban, M.; Divós, F. 2012. Vibration method for grading of large cross-section coniferous timber species. Holzforschung 66: 381–387. https://doi.org/10.1515/hf.2011.167
Arriaga, F.; Montón, J.; Segues, E.; Íñiguez-González, G. 2014. Determination of the mechanical properties of radiata pine timber by means of longitudinal and transverse vibration methods. Holzforschung 68: 299–305. https://doi.org/10.1515/hf-2013-0087
Arriaga, F.; Llana, D.F.; Esteban, M.; Íñiguez-González, G. 2017a. Influence of length and sensor positioning on acoustic time-of flight (ToF) measurement in structural timber. Holzforschung 71: 713–723. https://doi.org/10.1515/hf-2016-0214
Arriaga, F.; Íñiguez-González, G.; Llana, D.F.; Bobadilla, I.; Esteban, M. 2017b. Procedural considerations for the assessment of mechanical properties in existing timber structures. In Proceedings of the 20th International Nondestructive Testing and Evaluation of Wood Symposium. Madison, WI, USA. pp. 204-212.
Arriaga, F.; Montón, J.; Bobadilla, I.; Llana, D.F. 2019. Influence of length on acoustic time-of-flight (ToF) measurement in built-in structures of Norway spruce timber. Holzforschung 73(4): 339-352. https://doi.org/10.1515/hf-2018-0122
Atienza-Conejo, L. 2012. Diagnosis de estructuras atacadas por insectos xilófagos mediante ultrasonidos usando la técnica de impulso eco [Timber assessment of structures with xylophagous insect attacks by pulse-echo ultrasound technique]. Final Project Degree. UPC, Barcelona, Spain. URL: https://upcommons.upc.edu/bitstream/handle/2099.1/14443/Diagnosis%20de%20estructuras%20atacadas%20por%20insectos%20xilofagos%20mediante%20ultrasonidos%20usando%20el%20metodo%20de%20impulso%20eco.pdf?sequence=1&isAllowed=y
Balmori, J.A.; Acuña, L.; Basterra, L.A. 2016. Estudio de la influencia de la dirección de la fibra en la velocidad de propagación de ultrasonidos (Fakopp) en madera estructural de Pinus sylvestris L. y Pinus radiata D. Don. [Grain angle influence on ultrasound velocity (Fakopp) on Pinus sylvestris L. and Pinus radiata D. Don structural timber]. In Proceedings of the Congreso Euro-Americano REHABEND 2016. Burgos, Spain. pp. 746-755.
Baño, V.; Santos, J.C.; Vivas, J.; Rodríguez, S.; Vega, A.; Crews, K. 2011. A study of the influence of different types of timber footbridges on the vibrational natural frequency. In Proceedings of the 17th International Nondestructive Testing and Evaluation of Wood Symposium. Sopron, Hungary. pp. 531-537.
Basterra, L.A.; Acuña, L.; Casado, M.; Ramón, G.; López, G. 2009. Diagnóstico y análisis de estructuras de madera mediante técnicas no destructivas: aplicación a la plaza mayor de Chinchón (Madrid) [Diagnosis and assessment of timber structures using nondestructive techniques: application to the Plaza Mayor in Chinchón (Madrid)]. Inf Constr 61(516): 21-36. https://doi.org/10.3989/ic.09.016
Bobadilla, I.; Íñiguez-González, G.; Esteban, M.; Arriaga, F.; Casas, L. 2007. Density estimation by screw withdrawal resistance and probing in structural sawn coniferous timber. Proceedings of the 15th International Symposium on Nondestructive Testing of Wood. September 10-12. Duluth, MN, USA. pp. 247-251.
Bobadilla, I.; Martínez, R.D.; Calvo, J.; Arriaga, F.; Íñiguez-González, G. 2013. First steps in wood density estimation using a conventional drill. Proceedings of the 18th International Nondestructive Testing and Evaluation of Wood Symposium. September 24-27. Madison, WI, USA. pp. 112-118.
Bobadilla, I.; Martínez, R.D.; Esteban, M.; Llana, D.F. 2018. Estimation of wood density by the core drilling technique. Holzforschung 72(12): 1051-1056. https://doi.org/10.1515/hf-2018-0036
Broto, M.; Villanueva, J.L.; Lafuente, E.; Rodríguez, F. 2007. Evaluación de la resistencia por frecuencia de resonancia. Un caso práctico [Strength evaluation from resonance frequency: a case study]. In Proceedings of the III Congreso Iberoamericano de Productos Forestales. Buenos Aires, Argentina. 1 p.
Bucur, V.; Navarrete, A.; Troya, M.T.; Sánchez, E.; Garros, S.; Díez, M.R. 1993. Fungi decay in wood by combined nondestructive testings. In Proceedings of the Ultrasonics International 93 Conference. Vienna, Austria. pp. 287-290.
Cáceres-Hidalgo, E. 2016. Caracterización físico-mecánica de la madera de Paulownia elongata [Physico-mechanical characterization of Paulownia elongata timber]. Final Project Master Degree. UVa, Palencia, Spain. URL: https://uvadoc.uva.es/bitstream/handle/10324/18787/TFM-L282.pdf?sequence=1
Calderón, L. 2012. Estudio sobre la influencia del contenido de humedad de la madera en ensayos no destructivos para Pinus nigra Arn., Pinus radiata D. Don y Pinus sylvestris L. [Study of wood moisture content influence on nondestructive measurements on Pinus nigra Arn., Pinus radiata D. Don and Pinus sylvestris L.]. Final Project Degree. UPM, Madrid, Spain. URL: http://oa.upm.es/14396/
Camacho-Valero, J. 2017. Evaluación no destructiva de madera antigua y patrimonial usada estructuralmente [Nondestructive evaluation of structural old heritage timber]. Final Project Degree. UPV, Valencia, Spain. URL: https://riunet.upv.es/handle/10251/86871
Cañas-Gutiérrez, I. 2013. Capacidad de predicción del penetrómetro “Pilodyn” en la determinación de la densidad de la madera [Timber density estimation by Pilodyn penetrometer]. Final Project Degree. UVa, Palencia, Spain. URL: https://uvadoc.uva.es/bitstream/handle/10324/4682/TFM-L106.pdf?sequence=1
Capuz, R.; Díez, M.R.; Botelho, J.; San-Valero, E. 2007. Aplicación de métodos de ensayo no destructivos a vigas del forjado del consulado del mar de la Lonja de los Mercaderes de Valencia [NDT evaluation of deck beams in “La Lonja de Mercaderes” in Valencia]. In Proceedings of the III Congreso Iberoamericano de Productos Forestales. Buenos Aires, Argentina. 6 p.
Carballo, J.; Hermoso, E.; Fernández-Golfín, J.I. 2007. Influencia del tamaño en la predicción del módulo de elasticidad de vigas de madera de Pinus pinaster con técnicas vibratorias [Influence of the size for elasticity modulus prediction using vibration techniques over Pinus pinaster timber]. In Proceedings of the II Jornadas de investigación en construcción. Instituto de ciencias de la construcción Eduardo Torroja. Madrid, Spain. 10 p.
Carballo, J.; Hermoso, E.; Díez, M.R. 2009a. Ensayos no destructivos sobre madera estructural. Una revisión de 30 años en España. [Non-destructive testing on structural timber. A review of last 30 years in Spain]. Revista forestal (Costa Rica) 6(17): 1-16. URL: https://revistas.tec.ac.cr/index.php/kuru/article/view/387
Carballo, J.; Hermoso, E.; Fernández-Golfín, J.I. 2009b. Comparación de la evaluación y clasificación mecánica del Pinus pinaster Ait. con dos equipos de ultrasonidos [Comparison of evaluation and mechanical grading of Pinus pinaster Ait. by two ultrasound devices]. In Proceedings of the 5º Congreso Forestal Español. Ávila, Spain. 12 p.
Casado, M.; Basterra, L.A.; Acuña, L.; Pinazo, O.; Martínez, C.; Relea, E.; Barranco, I.; Ramón, G. 2005. Determinación de la capacidad resistente mediante métodos no destructivos. Aplicación en viguetas de forjado de un edificio singular [Determination of resistance by non destructive testing applied to structural timber joists from a singular building]. In Proceedings of the IV Congreso Forestal Español. Zaragoza, Spain. 7 p.
Casado, M.; Acuña, L.; Vecilla, D.; Basterra, L.A.; Pando, V.; Relea, E. 2007. Determinación de la capacidad resistente de madera estructural de Pinus sylvestris mediante PLG [Determination of bending strength of structural timber of Pinus sylvestris by PLG]. In Proceedings of the 11º Congreso Español de Ensayos No Destructivos. Gijón, Spain. 10 p.
Casado, M.; Acuña, L.; Basterra, L.A.; Relea, E. 2008. Clasificación de madera estructural de Pinus pinaster mediante técnicas vibratorias [Grading of Pinus pinaster structural timber by vibration techniques]. In Proceedings of the II Jornadas de Investigación en Construcción. Instituto de Ciencias de la Construcción Eduardo Torroja. Madrid, Spain. 9 p.
Casado, M.; Escudero, I.; Acuña, L.; Vecilla, D.; Basterra, L.A.; Ramón, G.; López, G.; Relea, E. 2009. Técnicas vibratorias aplicadas a madera estructural de Populus x euramericana [Application of vibration techniques to structural timber of Populus x euramericana]. In Proceedings of the 5º Congreso Forestal Español. Avila, Spain. 14 p.
Casado, M.; Acuña, L.; Vecilla, D.; Relea, E.; Basterra, L.A.; Ramón, G.; López, G. 2010. The influence of size in predicting the elastic modulus of Populus x euramericana timber using vibration techniques. In Structures and Architecture. Taylor & Francis Group, London, UK. pp. 2025-2032. URL: http://maderas.uva.es/files/2019/03/2010-Casado-et-al-The-influence-of-size-MOE-Populus-PLG.pdf
Casado, M.; Acuña, L.; Basterra, L.A.; Ramón, G.; Vecilla, D. 2012. Grading of structural timber of Populus x euroamericana clone I-214. Holzforschung 66(5): 633-638. https://doi.org/10.1515/hf-2011-0153
Casado, M.; Acuña, L.; Basterra, L.A.; Heredero, S.; SanMartín, R. 2013. Estimación de la calidad de la madera en rollo de Populus x euramericana mediante ultrasonidos [Estimation of round timber quality of Populus x euramericana by ultrasound]. In Proceedings of the 6º Congreso Forestal Español. Vitoria, Spain. 11p.
Castro-Triguero, R.; García-Macías, E.; Saavedra-Flores, E.; Friswell, M.I.; Gallego, R. 2017. Multi-scale model updating of a timber footbridge using experimental vibration data. Eng Computation 34(3): 754-780. https://doi.org/10.1108/EC-09-2015-0284
Conde, M. 2003. Caracterización de la madera estructural de Pinus nigra Subsp. Salzmannii. [Characterization of structural timber from Pinus nigra Ssp. Salzmannii]. Ph.D. Thesis, UPM, Madrid, Spain.
Conde, M.; Fernández-Golfín, J.I.; Hermoso, E. 2007. Mejora de la predicción de la resistencia y rigidez de la madera estructural con el método de ultrasonidos combinado con parámetros de clasificación visual [Improving the prediction of strength and rigidity of structural timber by combining ultrasound techniques with visual grading parameters]. Mater Construcc 57(288): 49-59. URL: http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/64/77
Correal, E.; Vilches, M.; Iglesias, C. 2013. Clasificación visual de la madera estructural de Castanea sativa del Sistema Mediterráneo Catalán [Visual grading for structural sawn timber of Castanea sativa from Catalan Mediterranean source]. In Proceedings of the 6º Congreso Forestal Español. Vitoria, Spain. 12p.
Crespo, J.; Aira, J.R.; Vázquez, C.; Guaita, M. 2017. Comparative analysis of the elastic constants measured via conventional, ultrasound, and 3-D digital image correlation methods in Eucalyptus globulus Labill. BioResources 12(2): 3728-3743. https://doi.org/10.17356/biores.12.2.3728-3743
Crespo-de-Antonio, M.; Luengas-Carreño, D.; Sánchez-Beitia, S. 2016. Applications of the hole-drilling technique in timber structures. Case studies. In Proceedings of the 10th International Conference on Structural Analysis of Historical Constructions. Leuven, Belgium. pp. 776-781.
Díez, M.R.; Conde, M.; Fernández-Gofín, J.I.; Rosskopf, S. 2000. Clasificación visual de madera estructural de pino laricio (Pinus nigra Arn.): Comparación de resultados usando las normas UNE 56544 y DIN 4074 [Visual grading of structural timber of Salzmann pine (Pinus nigra Arn.): Comparison of results using standards UNE 56544 and DIN 4074]. Inv Agrar-Sist Rec F 9(2): 375-380. URL: https://recyt.fecyt.es/index.php/IA/article/view/2630/2007
Díez, M.R.; Cabrero-Rojo, J.C.; García-Lombardero, R. 2006. Caracterización de la sabina albar con piezas de tamaño casi estructural. Intentos preliminares [Spanish juniper characterization of almost structural size timber. Preliminary results]. In Proceedings of the III Coloquio Internacional sobre Sabinares y Enebrales (género Juniperus): Ecología y gestión forestal sostenible. Soria, Spain. 5 p.
DIN standard 1958. DIN 4074-2: Bauholz für Holzbauteile; Gütebedingungen für Baurundholz (Nadelholz) [Building Timber for Wood Building Components; Quality Conditions for Building Logs (Softwood)]. Normenausschuss Holzwirtschaft und Möbel (NHM), Berlin, Germany.
DIN standard 2012. DIN 4074-1: Sortierung von Holz nach der Tragfähigkeit – Teil 1: Nadelschnittholz [Strength grading of wood – Part 1: Coniferous sawn timber]. Normenausschuss Holzwirtschaft und Möbel (NHM), Berlin, Germany.
Esteban, M. 2003. Determinación de la capacidad resistente de la madera estructural de gran escuadría y su aplicación en estructuras existentes de madera de conífera [Determination of the load carrying capacity of large cross-section structural coniferous timber in existing structures]. Ph.D. Thesis, UPM, Madrid, Spain. URL: http://oa.upm.es/1404/
Esteban, M.; Bobadilla, I.; Arriaga, F.; Íñiguez-González, G.; García, H. 2009. NDT applied to estimate the mechanical properties of the timber of an ancient structure in Valsaín, Segovia (Spain). In Proceedings of the 16th International Symposium on Nondestructive Testing of Wood. Beijing, China. pp. 152-157.
Esteban, M.; Arriaga, F.; Íñiguez-González, G.; Bobadilla, I.; Mateo, R. 2010. Influencia de las fendas en la resistencia de la madera estructural [The effect of fissures on the strength of structural timber]. Mater Construcc 60(299): 115-132. https://doi.org/10.3989/mc.2010.48208
European standard 2008. EN 1927-1: Qualitative classification of softwood round timber – Part 1: Spruces and firs. European Committee of Standardization (CEN). Brussels, Belgium.
European standard 2008. EN 1927-2: Qualitative classification of softwood round timber – Part 2: Pines. European Committee of Standardization (CEN). Brussels, Belgium.
European standard 2010. +A1:2012. EN 14081-2: Timber structures – Strength graded structural timber with rectangular cross section – Part 2: Machine grading; additional requirements for initial type testing. European Committee of Standardization (CEN). Brussels, Belgium.
European standard 2012. EN 1912: Structural timber. Strength classes. Assignment of visual grades and species. European Committee of Standardization (CEN). Brussels, Belgium.
European standard 2016. EN 338: Structural timber. Strength classes. European Committee of Standardization (CEN). Brussels, Belgium.
European standard 2016. EN 14081-1: Timber structures – Strength graded structural timber with rectangular cross section – Part 1: General requirements. European Committee of Standardization (CEN). Brussels, Belgium.
Fernández-Golfín, J.I.; Díez, M.R.; Gutiérrez-Oliva, A. 1998. Caracterización mecánica de la madera aserrada de uso estructural, clasificada visualmente de acuerdo con la norma UNE56544 [Mechanical characterization of sawn timber for structural use, graded visually in accordance with Spanish standard UNE56544]. Mater Construcc 48(252): 45-59. URL: http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/download/463/511
Fernández-Golfín, J.I.; Díez, M.R.; Baonza, M.V.; Gutiérrez-Oliva, A.; Hermoso, E.; Conde, M.; Van den Eynde, V. 2001. Caracterización de la calidad y las propiedades de la madera de Pino laricio (Pinus nigra Arn. salzmannii) [Quality and properties characterization of Salzmann pine (Pinus nigra Arn. salzmannii) timber]. Inv Agrar-Sist Rec F 10(2): 311-331. URL: http://www.inia.es/IASPF/2001/vol10-2/ferna.PDF
Fernández-Golfín, J.I.; Díez, M.R.; Hermoso, E.; Baso, C.; Casas, J.M.; González, O. 2007. Caracterización de la madera de Eucalyptus globulus para uso estructural [Characteristics of eucalyptus wood for structural purposes]. CIDEU 4: 91-100. URL: https://dialnet.unirioja.es/descarga/articulo/2723431.pdf
Galvañ, V.; Palaia, L.; Cervera, F.; Monzo, V. 1994. Strength estimation of decayed timber in old buildings by means of ultrasonic devices. In Proceedings of the 1st European Symposium on Nondestructive Evaluation of Wood. Sopron, Hungary. pp. 156-170.
García-de-Ceca, J.L.; Hermoso, E.; Mateo, R.; Íñiguez-González, G. 2013. Neural network models for the establishment of a structural stress grading methodology using nondestructive techniques. In Proceedings of the 18th International Nondestructive Testing and Evaluation of Wood Symposium. Madison, WI, USA. p. 808.
García-Esteban, L.; García-Fernández, F.; Palacios, P. 2009. MOE prediction in Abies pinsapo Boiss. timber: Application of an artificial neural network using non-destructive testing. Comput Struct 87: 1360-1365. https://doi.org/10.1016/j.compstruc.2009.08.010
García-Iruela, A.; García-Fernández, F.; García-Esteban, L.; Palacios, P.; Simón, C.; Arriaga, F. 2016. Comparison of modelling using regression techniques and an artificial neural network for obtaining the static modulus of elasticity of Pinus radiata D. Don. timber by ultrasound. Compos Part B-Eng 96: 112-118. https://doi.org/10.1016/j.compositesb.2016.04.036
González-Sanz, M. 2012. Estudio sobre el estado de conservación de la cubierta del martinete de Navafría (Segovia) [Assessment of roof structure of Navafría forge (Segovia)]. Final Project Degree. UPM, Madrid, Spain. URL: http://oa.upm.es/36345/
Gutiérrez-Sánchez, R.; Basterra, L.A.; Acuña, L; Casado, M.; Morillas, L.; López, G.; Balmori, J.A. 2019. Sistema y procedimiento de medición sónico para diagnóstico de elementos estructurales de madera [Sonic measurement system and procedure for evaluation of structural timber elements]. ES2685340B2. (G01N 29/04) (G01N 33/46) (2006.1). Spain. URL: https://patentscope.wipo.int/search/es/detail.jsf?docId=WO2018178482
Hermoso, E. 2001. Caracterización mecánica de la madera estructural de Pinus sylvestris L. [Mechanical characterization of Pinus sylvestris L. structural timber]. Ph.D. Thesis, UPM, Madrid, Spain. URL: http://oa.upm.es/644/1/07200117.pdf
Hermoso, E.; Díez, M.R.; Fernández-Golfín, J.I.; Mier, R. 2002. Calidad de la madera aserrada mediante evaluación no destructiva con ultrasonidos [Quality assessment of sawn timber by ultrasound non-destructive testing]. In Proceedings of the II Congreso Nacional de la Madera. Segovia, Spain. 13 p.
Hermoso, E.; Fernández-Golfín, J.I.; Díez, M.R. 2003. Evaluación de la clasificación resistente de la madera estructural mediante ultrasonidos [Evaluation of structural timber strength grading by ultrasound]. In Proceedings of the the 10º Congreso Nacional de Ensayos No Destructivos. Cartagena, Spain. 9 p.
Hermoso, E.; Fernández-Golfín, J.I.; Díez, M.R.; Mier, R. 2007. Aplicación de los ultrasonidos a la evaluación de las propiedades mecánicas de la madera en rollo de pequeño diámetro [Ultrasound application to evaluation of small round timber mechanic properties]. Inf Constr 59(506): 87-95. URL: http://informesdelaconstruccion.revistas.csic.es/index.php/informesdelaconstruccion/article/download/511/586
Hermoso, E.; Mateo, R.; Íñiguez-González, G.; Montón, J.; Arriaga, F. 2016. Visual grading and structural properties assessment of large cross-section Pinus radiata D. Don timber. BioResources 11(2): 5312-5321. https://doi.org/10.15376/biores.11.2.5312-5321
Hillig, E.; Bobadilla, I.; Gonҫalves, R.; Llana, D.F. 2018. The influence of wood polymer composite (WPC) specimen composition and dimensions on wave propagation. Eur J Wood Prod 76(4): 1153-1164. https://doi.org/10.1007/s00107-018-1309-9
Íñiguez-González, G. 2007. Clasificación mediante técnicas no destructivas y evaluación de las propiedades mecánicas de la madera aserrada de coníferas de gran escuadría para uso estructural. [Grading by non destructive techniques and assessment of the mechanical properties of large cross section coniferous sawn timber for structural use]. Ph.D. Thesis, UPM, Madrid, Spain. URL: http://oa.upm.es/415/
Íñiguez-González, G.; Esteban, M.; Arriaga, F.; Bobadilla, I.; Gil, M.C. 2007a. Influence of specimen length on ultrasound wave velocity. In Proceedings of the 15th International Symposium on Nondestructive Testing of Wood. Duluth, MN, USA. pp. 155-159.
Íñiguez-González, G.; Arriaga, F.; Barrett, J.D.; Esteban, M. 2007b. Visual grading of large structural coniferous sawn timber according to Spanish standard UNE 56544. Forest Prod J 57(10): 45-50.
Íñiguez-González, G.; Martínez, R.D.; Bobadilla, I.; Arriaga, F.; Esteban, M. 2009. Mechanical properties assessment of structural coniferous timber by means of parallel and perpendicular to the grain wave velocity. In Proceedings of the 16th International Symposium on Nondestructive Testing of Wood. Beijing, China. pp. 79-84.
Íñiguez-González, G.; Arriaga, F.; Esteban, M.; Bobadilla, I.; González, C.; Martínez, R.D. 2010. In situ non-destructive density estimation for the assessment of existing timber structures. In Proceedings of the World Conference on Timber Engineering (WCTE). Riva di Garda, Italy. 8 p.
Íñiguez-González, G.; Montón, J.; Arriaga, F.; Segués, E. 2015a. In-situ assessment of structural timber density using non-destructive and semi-destructive testing. BioResources 10(2): 2256-2265. URL: https://bioresources.cnr.ncsu.edu/resources/in-situ-assessment-of-structural-timber-density-using-non-destructive-and-semi-destructive-testing/
Íñiguez-González, G.; Arriaga, F.; Esteban, M.; Llana, D.F. 2015b. Reference conditions and modification factors for the standardization of nondestructive variables used in the evaluation of existing structures. Constr Build Mater 101:1166-1171. https://doi.org/10.1016/j.conbuildmat.2015.05.128
Íñiguez-González, G.; Arriaga, F.; Osuna-Sequera, C.; Esteban, M.; Ridley-Ellis, D. 2019. Nondestructive measurements in reclaimed timber from existing structures. In Proceedings of the 21st International Nondestructive Testing and Evaluation of Wood Symposium. Freiburg im Breisgau, BW, Germany. pp. 462-472.
Llana, D.F.; Sanabria, S.J.; Íñiguez-González, G.; Arriaga, F.; Niemz, P. 2013. Experimental and numerical investigation of effect of sawn timber dimensions in ultrasonic velocity measurements for Spanish softwoods. In Proceedings of the 18th International Nondestructive Testing and Evaluation of Wood Symposium. Madison, WI, USA. p. 710.
Llana, D.F.; Íñiguez-González, G.; Arriaga, F.; Niemz, P. 2014. Influence of temperature and moisture content on non-destructive measurements in Scots pine wood. Wood Research 59(5): 769-780. URL: http://www.woodresearch.sk/wr/201405/06.pdf
Llana, D.F. 2016. Influencia de factores físicos y geométricos en la clasificación estructural de la madera mediante técnicas no destructivas [The influence of physical and geometrical factors on timber stress-grading by non-destructive techniques]. Ph.D. Thesis, UPM, Madrid, Spain. https://doi.org/10.20868/UPM.thesis.43696
Llana, D.F.; Íñiguez-González, G.; Arriaga, F.; Wang, X. 2016. Time-of-flight adjustment procedure for acoustic measurements in structural timber. BioResources 11(2): 3303-3317. https://doi.org/10.15376/biores.11.2.3303-3317
Llana, D.F.; Íñiguez-González, G.; Montón, J.; Arriaga, F. 2018a. In-situ density estimation by four nondestructive techniques on Norway spruce from built-in wood structures. Holzforschung 72(10): 871-879. https://doi.org/10.1515/hf-2018-0027
Llana, D.F.; Íñiguez-González, G.; Martínez, R.D.; Arriaga, F. 2018b. Influence of timber moisture content on wave time-of-flight and longitudinal natural frequency in coniferous species for different instruments. Holzforschung 72(5): 405-411. https://doi.org/10.1515/hf-2017-0133
Llana, D.F.; Hermoso, E.; Bobadilla, I.; Íñiguez-González, G. 2018c. Influence of moisture content on the results of penetration and withdrawal resistance measurements on softwoods. Holzforschung 72(7): 549-555. https://doi.org/10.1515/hf-2017-0133
Llana, D.F.; Arriaga, F.; Esteban, M.; Íñiguez-González, G. 2019. Comparison between wet and dry timber visual strength grading according to the Spanish (UNE 56544) and German (DIN 4074-1) standards. Mater Construcc 69(336): e205. https://doi.org/10.3989/mc.2019.03319
López, G.; Basterra, L.A.; Acuña, L. 2018. Infrared thermography for wood density estimation. Infrared Phys Techn 89: 242-246. https://doi.org/10.1016/j.infrared.2018.01.015
Lozano, A.; Guaita, M.; Lorenzo, D.; Benito, J. 2013. Investigation about the decay of the timber structure of an ancient wine cellar in La Rioja (Spain) and sanitation proposal. Adv Mater Res-Switz 778: 976-982. https://doi.org/10.4028/www.scientific.net/AMR.778.976
Mariño, R.A.; Fernández, M.E.; Fernández-Rodríguez, C. 2002. Análisis comparativo de la densidad de la madera de Pinus sylvestris L. mediante la utilización del resistógrafo [Comparative analysis of Pinus sylvestris L. wood density using resistograph]. Revista CIS-Madera 9: 60-70.
Mariño, R.A.; Fernández, M.E.; Fernández-Rodríguez, C.; Méndez, M. 2010. Detection of pith location in chestnut lumber (Castanea sativa Mill.) by means of acoustic tomography and longitudinal stress-wave velocity. Eur J Wood Prod 68: 197-206. https://doi.org/10.1007/s00107-009-0366-5
Martín, M.T. 1994. Some nondestructive methods to determine physical features of wood. In Proceedings of the 1st European Symposium on Nondestructive Evaluation of Wood. Sopron, Hungary. p. 536.
Martínez, J.J. 1992. Características mecánicas de la madera de Pinus pinaster Ait. obtenidas a partir de ensayos con piezas de tamaño estructural [Mechanical properties of Pinus pinaster Ait. structural timber]. Ph.D. Thesis, UPM, Madrid, Spain.
Martínez, R.D.; Bobadilla, I. 2013. Extractor de muestras de madera mediante taladro [Wood sample extractor using a conventional drill]. Spain, ES2525504. (B27C 3/00) (2006.1). Appl. 201330890.
Martínez, R.D. 2016. Métodos no destructivos de estimación de la densidad de madera. [Timber density estimation by non-destructive methods]. Ph.D. Thesis. USC, Lugo, Spain. URL: http://hdl.handle.net/10347/15159
Martínez, R.D.; Calvo, J.; Arriaga, F.; Bobadilla, I. 2018. In situ density estimation of timber pieces by drilling residue analysis. Eur J Wood Prod 76: 509-515. https://doi.org/10.1007/s00107-017-1214-7
Martínez-Sala, R.; Rodríguez-Abad, I.; Díez, M.R.; Capuz, R. 2013. Assessment of the dielectric anisotropy in timber using the nondestructive GPR technique. Constr Build Mater 38: 903-911. https://doi.org/10.1016/j.conbuildmat.2012.09.052
Merlo, E.; Alvarez-González, J.G.; Santaclara, O.; Riesco, G. 2014. Modelling modulus of elasticity of Pinus pinaster Ait. in northwestern Spain with standing tree acoustic measurements, tree, stand and site variables. Forest Syst 23(1): 153-166. http://dx.doi.org/10.5424/fs/2014231-04706
Mier, R. 2001. Clasificación de madera aserrada estructural mediante Inteligencia Artificial: Redes Neuronales [Structural sawn timber classification by artificial intelligent: Neural Networks]. Final Project Degree. UPM, Madrid, Spain.
Montero, M.J. 2013. Clasificación de madera estructural de gran escuadría de Pinus sylvestris L. mediante métodos no destructivos [Grading of large cross section structural timber of Pinus sylvestris L. by non destructive techniques]. Ph.D. Thesis, UPM, Madrid, Spain. URL: http://oa.upm.es/15201/1/MARIA_JOSE_MONTERO_GARCIA_ANDRADE.pdf
Montero, M.J.; de la Mata, J.; Esteban, M.; Hermoso, E. 2015. Influence of moisture content on the wave velocity to estimate the mechanical properties of large cross-section pieces for structural use of Scots pine from Spain. Maderas-Cienc Tecnol 17(2): 407-420. http://dx.doi.org/10.4067/S0718-221X2015005000038
Montón, J. 2012. Clasificación estructural de la Madera de Pinus radiata D. Don procedente de Cataluña mediante métodos no destructivos y su aplicabilidad en la diagnosis estructural [Structural timber grading of Pinus radiata D. Don from Catalonia using NDT and applicability in structural assessment]. Ph.D.
Thesis. UPC. Barcelona, Spain. URL: https://www.tdx.cat/handle/10803/96423#page=1
Montón, J.; Arriaga, F.; Íñiguez-González, G.; Segués, E. 2015. Warp requirements and yield efficiency in the visual grading of sawn radiata pine timber. BioResources 10(1): 1115-1126. URL: https://bioresources.cnr.ncsu.edu/resources/warp-requirements-and-yield-efficiency-in-the-visual-grading-of-sawn-radiata-pine-timber/
Montoya-Morguí, F. 2010. Creació d’una metodologia d’aplicació i assaig del Resistógraf en la diagnosi d’elements estructurals de fusta [Resistograph application and evaluation methodology development for assessment of timber structures]. Final Project Degree. UPC, Barcelona, Spain.
Morales-Conde, M.J.; Rodríguez-Liñán, C.; Rubio, P. 2013. Application of non-destructive techniques in the inspection of the wooden roof of historic buildings: A case study. In Proceedings of the 2nd International Conference on Structural Health Assessment of Timber Structures (SHATIS). Trento, Italy. pp. 233-242.
Morales-Conde, M.J.; Rodríguez-Liñán, C.; Machado, J.S. 2014. Predicting the density of structural timber members in service. The combined use of wood cores and drill resistance data. Mater Construcc 64(315): e029. http://dx.doi.org/10.3989/mc.2014.03113
Morales-Conde, M.J.; Machado, J.S. 2017. Evaluation of cross-sectional variation of timber bending modulus of elasticity by stress waves. Constr Build Mater 134: 617-625. https://doi.org/10.1016/j.conbuildmat.2016.12.188
Oliver, J.V.; Abián, M.A. 2013. Advanced wireless sensors for termite detection in wood constructions. Wood Sci Technol 47: 269-280. https://doi.org/10.1007/s00226-012-0485-8
Osuna-Sequera, C. 2017. Particularidades de la aplicación de las técnicas no destructivas en la estimación de propiedades mecánicas en piezas de madera de gran longitud procedentes de estructuras existentes [Considerations on non-destructive testing applied to estimate mechanical properties in large length timber pieces from existing structures]. Final Project Degree. UPM, Madrid, Spain. URL: http://oa.upm.es/51760/
Osuna-Sequera, C.; Íñiguez-González, G.; Esteban, M.; Llana, D.F.; Arriaga, F. 2017. Particularidades de la aplicación de las técnicas no destructivas en piezas de madera de gran longitud procedentes de estructuras existentes [Considerations on the application of nondestructive testing on large length timber pieces from existing structures]. In Proceedings of LIGNOMAD 17 the 1o Congreso sobre Construcción con Madera y otros Materiales Lignocelulósicos. Barcelona, Spain. pp. 53-57.
Osuna-Sequera, C.; Llana, D.F.; Íñiguez-González, G.; Arriaga, F. 2019a. The influence of cross-section variation on bending stiffness assessment in existing timber structures. Eng Struct. In press.
Osuna-Sequera, C.; Llana, D.F.; Esteban, M.; Arriaga, F. 2019b. Improving density estimation in large cross-section timber from existing structures by increasing the number of non-destructive measurements. Constr Build Mater 211: 199-206. https://doi.org/10.1016/j.conbuildmat.2019.03.144
Palaia, L.; Galvan, V.; Cervera, F.; Monzo, V. 1993. Using ultrasonic waves for the detection of timber decay in old buildings. In Proceedings of the 9th International Symposium on Nondestructive Testing of Wood. Madison, WI, USA. pp. 71-77.
Palaia, L.; Galvan, V.; Cervera, F.; Molina, R. 2000. NDT determination of the strength loss of deteriorated wood, by using ultrasonic techniques and a specific wood tester. In Proceedings of the 12th International Symposium on Nondestructive Testing of Wood. Sopron, Hungary. pp. 327-336.
Palaia, L.; Monfort, J.; Sánchez, R.; Gil, L.; Álvarez, Á.; López, V.; Tormo, S.; Pérez, C.; Navarro, P. 2008. Assessment of timber structures in service by using combined methods of non-destructive testing together with traditional ones. In Proceedings of the 9th International Conference on NDT of Art. Jerusalem, Israel. 10 p.
Pedras, F.; Riesco G.; Remacha, A. 1997. Determinación de las características elásticas de la madera de castaño (Castanea sativa Mill.) mediante ensayos no destructivos [Determination of elastic properties of sweet chestnut (Castanea sativa Mill.) by NDT]. In Proceedings of the 2º Congreso Forestal Español. Pamplona, Spain. pp. 295-300.
Pérez-García, A. 2012. Estimación de parámetros de calidad sobre tableros derivados de la madera a partir de ensayos no destructivos [Wood-board quality parameter estimation by non-destructive testing]. Final Project Degree. UPM, Madrid, Spain. URL: http://oa.upm.es/11295/
Riesco, G. 2001. Estudio de las propiedades físico-mecánicas de la madera de roble (Quercus robur L.) de Galicia en relación con las variables del medio [Study of physico-mechanical properties of European oak (Quercus robur L.) timber from Galicia in relation with environmental variables]. Ph.D. Thesis, UPM, Madrid, Spain.
Rodríguez-Abad, I.; Martínez-Sala, R.; Capuz, R.; Díez, M.R.; García-García, F. 2011. Estudio de la variación del contenido de humedad en el Pinus pinaster Ait. por medio de la técnica no destructiva del georradar [Assessment of the variation of the moisture content in Pinus pinaster Ait. using the non destructive GPR technique]. Mater Construcc 61(301): 143-156. https://doi.org/10.3989/mc.2010.49608
Rodríguez-Liñán, C.; Rubio, P. 1995. Evaluación del estado de la madera, en obras de rehabilitación, mediante técnicas de ultrasonidos y obtención de parámetros resistentes [Evaluation of wood conservation works by ultrasound techniques and obtention of resistance parameters]. Inf Constr 47(440): 5-22. https://doi.org/10.3989/ic.1995.v47.i440.1044
Rodríguez-Liñán, C.; Rubio, P. 2000. Evaluación del estado de la madera, en obras de rehabilitación, mediante técnicas de ultrasonidos [Timber assessment by ultrasound techniques in refurbishment works]. Universidad de Sevilla, Sevilla, Spain. URL: https://expobus.us.es/omeka/items/show/883
Rojas, J.A.M.; Alpuente, J.; Postigo, D.; Rojas, I.M.; Vignote, S. 2011. Wood species identification using stress-wave analysis in the audible range. Appl Acoust 72: 934-942. https://doi.org/10.1016/j.apacoust.2011.05.016
Ruano, A.; Zitek, A.; Hinterstoisser, B.; Hermoso, E. 2019. NIR hyperspectral imaging (NIR-HI) and μXRD for determination of the transition between juvenile and mature wood of Pinus sylvestris L. Holzforschung 73(7): 621-627. https://doi.org/10.1515/hf-2018-0186
Rubio, P. 1997. Evaluación del estado de la madera mediante técnicas de ultrasonidos [Assessment of timber by ultrasound techniques]. Ph.D. Thesis. US, Sevilla, Spain. URL: http://hdl.handle.net/11441/23937
Salamanca, M. 2017. Estimación mediante penetrómetros de la densidad en madera aserrada de las especies de coníferas y frondosas más habituales en construcción en España [Study on the estimation, by penetrometers, of the density of sawn wood of the most common coniferous and leafy species used in construction in Spain]. Final Project Degree. UPM, Madrid, Spain.
Sánchez-Beitia, S.; Crespo-de-Antonio, M.; Acuña, L. 2015. Applicability of the Hole-Drilling procedure for stresses quantification in timber bending elements in service. Constr Build Mater 93: 798-805. https://doi.org/10.1016/j.conbuildmat.2015.05.091
Santaclara, O.; Fernández, A.; Merlo, E.; Guaita, M. 2009. Técnicas no destructivas y ensayo mecánico en madera aserrada de gran escuadría de Pseudotsuga menziesii [Nondestructive testing and mechanical testing of large cross-section Pseudotsuga menziesii sawn timber]. In Proceedings of the V Congreso Nacional y II Congreso Ibérico AgroIngeniería. Lugo, Spain. 9 p.
Santaclara, O.; Merlo, E. 2011. Acoustic segregation of Pinus pinaster logs for structural lumber production according to strength classes. In Proceedings of the 17th International Nondestructive Testing and Evaluation of Wood Symposium. Sopron, Hungary. p. 755.
Sevilla, S.; Bobadilla, I.; Martínez, R.D.; Esteban, M.; Llana, D.F. 2013. Non-destructive methods to estimate the physical aging of Superpan. In Proceedings of the 18th International Nondestructive Testing and Evaluation of Wood Symposium. Madison, WI, USA. p. 637.
Soto-Martínez, I. 2010. Estudio de la relación entre perfiles de densidad y gráficas resistográficas en madera estructural y aplicaciones industriales [Comparison between density and resistograph results in structural timber and industrial applications]. Final Project Degree. UPV, Gandía, Spain. URL: https://riunet.upv.es/handle/10251/9983
Touza, M.C. 2009. Case study: Assessment of the mechanical properties of an old pitch pine timber structure. In Proceedings of the International Conference on Wooden Cultural Heritage. Hamburg, Germany. 8 p.
Touza, M.C.; Soilán, A.; Lorenzo, D. 2013. Evaluation of the load-carrying capacity in bending of large cross section “Pitch pine” beams in standing structures. Adv Mater Res-Switz 778: 410-417. https://doi.org/10.4028/www.scientific.net/AMR.778.410
Troya, M.T.; Navarrete, A. 1994. Study of the degradation of retified wood through ultrasonic and gravimetric techniques. In Proceedings of the 25th Annual meeting. Bali, Indonesia. 6 p.
UNE standard 1972. UNE 56525: Clasificación de la madera aserrada de construcción [Visual grading of construction sawn timber]. IRANOR/CTN 56 Madera y Corcho. Madrid, Spain.
UNE standard 2011. UNE 56544: Clasificación visual de la madera aserrada para uso estructural. Madera de coníferas [Visual grading for structural sawn timber. Coniferous timber]. AEN/CTN 56 Madera y Corcho. Madrid, Spain.
UNE standard 2013. UNE 56546: Clasificación visual de la madera aserrada para uso estructural. Madera de frondosas [Visual grading for structural sawn timber. Hardwood timber]. AEN/CTN 56 Madera y Corcho, Madrid, Spain.
UNE standard 2014. UNE 41809: Estructuras de madera existentes. Uso del penetrómetro para el diagnóstico de los elementos de madera de edificios existentes [Existing wood structures. Use of penetrometer in wood elements diagnosis in existing buildings]. AEN/CTN 41 Construcción, Madrid, Spain.
UNE standard 2018. UNE 56547: Clasificación visual de los postes de madera para líneas aéreas [Visual classification for wood overhead poles]. CTN 56 Madera y Corcho, Madrid, Spain.
Vázquez, C.; Gonҫalves, R.; Bertoldo, C.; Baño, V.; Vega, A.; Crespo, J.; Guaita, M. 2015. Determination of the mechanical properties of Castanea sativa Mill. using ultrasonic wave propagation and comparison with static compression and bending methods. Wood Sci Technol 49: 607–622. https://doi.org/10.1007/s00226-015-0719-7
Vega, A.; Dieste, A.; Guaita, M.; Majada, J.; Baño, V. 2012. Modelling of the mechanical properties of Castanea sativa Mill. structural timber by a combination of nondestructive variables and visual grading parameters. Eur J Wood Prod 70(6): 839-844. https://doi.org/10.1007/s00107-012-0626-7
Vega, A. 2013. Caracterización mecánica de la madera estructural de Castanea sativa Mill. clasificación visual y evaluación mediante métodos no destructivos [Mechanical characterization of Castanea sativa Mill. structural sawn timber: visual grading and nondestructive testing evaluation]. Ph.D. Thesis. USC, Lugo, Spain. URL: https://minerva.usc.es/xmlui/handle/10347/9345
Vega, A.; Arriaga, F.; Guaita, M.; Baño, V. 2013. Proposal for visual grading criteria of structural timber of sweet chestnut from Spain. Eur J Wood Prod 71: 529-532. https://doi.org/10.1007/s00107-013-0705-4
Vega, A.; Gonzalez, L.; Fernandez, I.; Gonzalez, P. 2019a. Grading and mechanical characterization of small-diameter round chestnut (Castanea sativa Mill.) timber from thinning operations. Wood Mater Sci Eng 14(2): 81-87. https://doi.org/10.1080/17480272.2017.1387174
Vega, A.; Gonzalez, L.; Rodríguez, S.; Hevia, A. 2019b. Prediction of the sawing yield of Pinus pinaster and Pinus radiata structural timber from thinning operations through Nondestructive Techniques. In Proceedings of the 21st International Nondestructive Testing and Evaluation of Wood Symposium. Freiburg im Breisgau, BW, Germany. pp. 577-583.
Vilches, M.; Correal, E. 2009. Aplicación del resistógrafo para la determinación de las propiedades de la madera [Using a resistograph to determine wood properties]. In Proceedings of the 5º Congreso Forestal Español. Avila, Spain. 8 p.
Vilches, M.; Labèrnia, C.; Rodríguez, V. 2015. Assessment through NDT of the state of timber structures of the historic buildings of Catalonia. COST Action FP 1101 Assessment, reinforcement and monitoring of timber structures. pp 209-216.
Villacorta-Calvo, J.J.; Izquierdo-Fuente, A.; Val-Puente, L.; Suárez, L.; Martínez, R.D.; Morillas, L.; Basterra, L.A. 2019. AmemoMe: Diseño e implementación de un sistema de medida basado en acelerómetros MEMS para el análisis de los modos de vibración de una estructura de madera [AmemoMe:
Accelerometers MEMS measurement system design and implementation to analyze vibration modes on a timber structure]. In Proceedings of LIGNOMAD 19 the 2o Congreso sobre Construcción con Madera y otros Materiales Lignocelulósicos. Santiago de Compostela, Spain. pp. 72-76.
Villanueva, J.L. 2009. Caracterización mecánica de rollizos de sabina (Juniperus thurifera L.) de Castilla y León. Prueba de clasificación visual y evaluación mediante resonancia [Mechanical characterization of Spanish juniper (Juniperus thurifera L.) round timber from Castilla y León. Visual grading and resonance evaluation]. Final Project Degree. UdL, Lérida, Spain. URL: https://repositori.udl.cat/handle/10459.1/45926
Villasante, A.; Íñiguez-González, G.; Puigdomenech, L. 2019. Comparison of various multivariate models to estimate structural properties by means of non-destructive techniques (NDTs) in Pinus sylvestris L. timber. Holzforschung. 73(4): 331-338. https://doi.org/10.1515/hf-2018-0103
Acuña, L.; Díez, M.R.; Martín, L.; Casado, M.; Basterra, L.A.; Ramón, G.; Relea, E. 2007. La técnica de transmisión ultrasónica aplicada a la madera estructural [Ultrasonic transmission technique applied to structural lumber]. In Proceedings of the 11° Congreso Español de Ensayos No Destructivos. Gijón, Spain, pp. 91–102.
Acuña, L.; Basterra, L.A.; Casado, M.; López, G.; Ramón, G.; Relea, E.; Martínez, C.; González, A. 2011. Aplicación del resistógrafo a la obtención de la densidad y la diferenciación de especies de madera (Application of resistograph to obtain the density and to differentiate wood species). Mater Construcc 61(303): 451-464. https://doi.org/10.3989/mc.2010.57610
Adell, F.J.; Hermoso, E.; Arriaga, F.; Richter, C. 2008. Comparison of the Spanish visual strength grading standard for structural sawn timber (UNE 56544) with the German one (DIN 4074) for Scots pine (Pinus sylvestris L.) from Germany. Holz Roh Werkst 66: 253-258. https://doi.org/10.1007/s00107-008-0241-9
Aira, J.R.; Villanueva, J.L.; Lafuente, E. 2019. Visual and machine grading of small diameter machined round Pinus sylvestris and Pinus nigra subsp. Salzmannii wood from mature Spanish forests. Mater Struct 52: 32. https://doi.org/10.1617/s11527-019-1330-4
Arce-Blanco, M. 2017. Estudio de las bóvedas encamonadas en Madrid capital y análisis de su comportamiento estructural [Plank timber arches study in Madrid capital and analysis of structural behavior]. Ph.D. Thesis, UPM, Madrid, Spain. URL: http://oa.upm.es/48247/1/MARINA_ARCE_BLANCO.pdf
Argüelles, R.; Arriaga, F. 1986. Norma de cálculo de estructuras de madera. [Timber structures design standard]. Ed. AITIM. Madrid, Spain. pp. 80-89.
Arriaga, F.; García, L.; Gebremedhin, K.G.; Peraza, F. 1992. Grading and load carrying capacity of old timber beams. In Proceedings of the International Summer Meeting, American Society of Agricultural Engineers. Charlotte, NC, USA. 25 p.
Arriaga, F.; Íñiguez-González, G.; Esteban, M. 2005a. Assessment of strength and stiffness properties using longitudinal stress wave on structural gross cross section timber of radiate pine (Pinus radiata D. Don). In Proceedings of the 14th International Symposium on Nondestructive Testing of Wood. Hannover, Germany. pp. 103-109.
Arriaga, F.; Esteban, M.; Relea, E. 2005b. Evaluación de la capacidad portante de piezas de gruesa escuadría de madera de conífera en estructuras existentes [Evaluation of the load carrying capacity of large cross section coniferous timber in standing structures]. Mater Construcc 55(280): 43-52. https://doi.org/10.3989/mc.2005.v55.i280.205
Arriaga, F.; Íñiguez-González, G.; Esteban, M.; Fernández-Golfín, J.I. 2006. Structural Tali timber (Erythrophleum ivorense A. Chev., Erythrophleum suaveolens Brenan.): assessment of strength and stiffness properties using visual and ultrasonic methods. Holz Roh Werkst 64: 357–362. https://doi.org/10.1007/s00107-006-0100-5
Arriaga, F.; Esteban, M.; Argüelles, R.; Bobadilla, I.; Íñiguez-González, G. 2007. Efecto de las gemas en la resistencia a flexión de piezas enterizas de madera [The effect of wanes on the bending strength of solid timber beams]. Mater Construcc 57(288): 61-76. URL: http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/viewFile/65/78
Arriaga, F.; Íñiguez-González, G.; Esteban, M.; Bobadilla, I. 2009. Proposal of a methodology for the assessment of existing timber structures in Spain. In Proceedings of the 16th International Symposium on Nondestructive Testing of Wood. Beijing, China. pp. 145-151.
Arriaga, F.; Íñiguez-González, G.; Esteban, M.; Divós, F. 2012. Vibration method for grading of large cross-section coniferous timber species. Holzforschung 66: 381–387. https://doi.org/10.1515/hf.2011.167
Arriaga, F.; Montón, J.; Segues, E.; Íñiguez-González, G. 2014. Determination of the mechanical properties of radiata pine timber by means of longitudinal and transverse vibration methods. Holzforschung 68: 299–305. https://doi.org/10.1515/hf-2013-0087
Arriaga, F.; Llana, D.F.; Esteban, M.; Íñiguez-González, G. 2017a. Influence of length and sensor positioning on acoustic time-of flight (ToF) measurement in structural timber. Holzforschung 71: 713–723. https://doi.org/10.1515/hf-2016-0214
Arriaga, F.; Íñiguez-González, G.; Llana, D.F.; Bobadilla, I.; Esteban, M. 2017b. Procedural considerations for the assessment of mechanical properties in existing timber structures. In Proceedings of the 20th International Nondestructive Testing and Evaluation of Wood Symposium. Madison, WI, USA. pp. 204-212.
Arriaga, F.; Montón, J.; Bobadilla, I.; Llana, D.F. 2019. Influence of length on acoustic time-of-flight (ToF) measurement in built-in structures of Norway spruce timber. Holzforschung 73(4): 339-352. https://doi.org/10.1515/hf-2018-0122
Atienza-Conejo, L. 2012. Diagnosis de estructuras atacadas por insectos xilófagos mediante ultrasonidos usando la técnica de impulso eco [Timber assessment of structures with xylophagous insect attacks by pulse-echo ultrasound technique]. Final Project Degree. UPC, Barcelona, Spain. URL: https://upcommons.upc.edu/bitstream/handle/2099.1/14443/Diagnosis%20de%20estructuras%20atacadas%20por%20insectos%20xilofagos%20mediante%20ultrasonidos%20usando%20el%20metodo%20de%20impulso%20eco.pdf?sequence=1&isAllowed=y
Balmori, J.A.; Acuña, L.; Basterra, L.A. 2016. Estudio de la influencia de la dirección de la fibra en la velocidad de propagación de ultrasonidos (Fakopp) en madera estructural de Pinus sylvestris L. y Pinus radiata D. Don. [Grain angle influence on ultrasound velocity (Fakopp) on Pinus sylvestris L. and Pinus radiata D. Don structural timber]. In Proceedings of the Congreso Euro-Americano REHABEND 2016. Burgos, Spain. pp. 746-755.
Baño, V.; Santos, J.C.; Vivas, J.; Rodríguez, S.; Vega, A.; Crews, K. 2011. A study of the influence of different types of timber footbridges on the vibrational natural frequency. In Proceedings of the 17th International Nondestructive Testing and Evaluation of Wood Symposium. Sopron, Hungary. pp. 531-537.
Basterra, L.A.; Acuña, L.; Casado, M.; Ramón, G.; López, G. 2009. Diagnóstico y análisis de estructuras de madera mediante técnicas no destructivas: aplicación a la plaza mayor de Chinchón (Madrid) [Diagnosis and assessment of timber structures using nondestructive techniques: application to the Plaza Mayor in Chinchón (Madrid)]. Inf Constr 61(516): 21-36. https://doi.org/10.3989/ic.09.016
Bobadilla, I.; Íñiguez-González, G.; Esteban, M.; Arriaga, F.; Casas, L. 2007. Density estimation by screw withdrawal resistance and probing in structural sawn coniferous timber. Proceedings of the 15th International Symposium on Nondestructive Testing of Wood. September 10-12. Duluth, MN, USA. pp. 247-251.
Bobadilla, I.; Martínez, R.D.; Calvo, J.; Arriaga, F.; Íñiguez-González, G. 2013. First steps in wood density estimation using a conventional drill. Proceedings of the 18th International Nondestructive Testing and Evaluation of Wood Symposium. September 24-27. Madison, WI, USA. pp. 112-118.
Bobadilla, I.; Martínez, R.D.; Esteban, M.; Llana, D.F. 2018. Estimation of wood density by the core drilling technique. Holzforschung 72(12): 1051-1056. https://doi.org/10.1515/hf-2018-0036
Broto, M.; Villanueva, J.L.; Lafuente, E.; Rodríguez, F. 2007. Evaluación de la resistencia por frecuencia de resonancia. Un caso práctico [Strength evaluation from resonance frequency: a case study]. In Proceedings of the III Congreso Iberoamericano de Productos Forestales. Buenos Aires, Argentina. 1 p.
Bucur, V.; Navarrete, A.; Troya, M.T.; Sánchez, E.; Garros, S.; Díez, M.R. 1993. Fungi decay in wood by combined nondestructive testings. In Proceedings of the Ultrasonics International 93 Conference. Vienna, Austria. pp. 287-290.
Cáceres-Hidalgo, E. 2016. Caracterización físico-mecánica de la madera de Paulownia elongata [Physico-mechanical characterization of Paulownia elongata timber]. Final Project Master Degree. UVa, Palencia, Spain. URL: https://uvadoc.uva.es/bitstream/handle/10324/18787/TFM-L282.pdf?sequence=1
Calderón, L. 2012. Estudio sobre la influencia del contenido de humedad de la madera en ensayos no destructivos para Pinus nigra Arn., Pinus radiata D. Don y Pinus sylvestris L. [Study of wood moisture content influence on nondestructive measurements on Pinus nigra Arn., Pinus radiata D. Don and Pinus sylvestris L.]. Final Project Degree. UPM, Madrid, Spain. URL: http://oa.upm.es/14396/
Camacho-Valero, J. 2017. Evaluación no destructiva de madera antigua y patrimonial usada estructuralmente [Nondestructive evaluation of structural old heritage timber]. Final Project Degree. UPV, Valencia, Spain. URL: https://riunet.upv.es/handle/10251/86871
Cañas-Gutiérrez, I. 2013. Capacidad de predicción del penetrómetro “Pilodyn” en la determinación de la densidad de la madera [Timber density estimation by Pilodyn penetrometer]. Final Project Degree. UVa, Palencia, Spain. URL: https://uvadoc.uva.es/bitstream/handle/10324/4682/TFM-L106.pdf?sequence=1
Capuz, R.; Díez, M.R.; Botelho, J.; San-Valero, E. 2007. Aplicación de métodos de ensayo no destructivos a vigas del forjado del consulado del mar de la Lonja de los Mercaderes de Valencia [NDT evaluation of deck beams in “La Lonja de Mercaderes” in Valencia]. In Proceedings of the III Congreso Iberoamericano de Productos Forestales. Buenos Aires, Argentina. 6 p.
Carballo, J.; Hermoso, E.; Fernández-Golfín, J.I. 2007. Influencia del tamaño en la predicción del módulo de elasticidad de vigas de madera de Pinus pinaster con técnicas vibratorias [Influence of the size for elasticity modulus prediction using vibration techniques over Pinus pinaster timber]. In Proceedings of the II Jornadas de investigación en construcción. Instituto de ciencias de la construcción Eduardo Torroja. Madrid, Spain. 10 p.
Carballo, J.; Hermoso, E.; Díez, M.R. 2009a. Ensayos no destructivos sobre madera estructural. Una revisión de 30 años en España. [Non-destructive testing on structural timber. A review of last 30 years in Spain]. Revista forestal (Costa Rica) 6(17): 1-16. URL: https://revistas.tec.ac.cr/index.php/kuru/article/view/387
Carballo, J.; Hermoso, E.; Fernández-Golfín, J.I. 2009b. Comparación de la evaluación y clasificación mecánica del Pinus pinaster Ait. con dos equipos de ultrasonidos [Comparison of evaluation and mechanical grading of Pinus pinaster Ait. by two ultrasound devices]. In Proceedings of the 5º Congreso Forestal Español. Ávila, Spain. 12 p.
Casado, M.; Basterra, L.A.; Acuña, L.; Pinazo, O.; Martínez, C.; Relea, E.; Barranco, I.; Ramón, G. 2005. Determinación de la capacidad resistente mediante métodos no destructivos. Aplicación en viguetas de forjado de un edificio singular [Determination of resistance by non destructive testing applied to structural timber joists from a singular building]. In Proceedings of the IV Congreso Forestal Español. Zaragoza, Spain. 7 p.
Casado, M.; Acuña, L.; Vecilla, D.; Basterra, L.A.; Pando, V.; Relea, E. 2007. Determinación de la capacidad resistente de madera estructural de Pinus sylvestris mediante PLG [Determination of bending strength of structural timber of Pinus sylvestris by PLG]. In Proceedings of the 11º Congreso Español de Ensayos No Destructivos. Gijón, Spain. 10 p.
Casado, M.; Acuña, L.; Basterra, L.A.; Relea, E. 2008. Clasificación de madera estructural de Pinus pinaster mediante técnicas vibratorias [Grading of Pinus pinaster structural timber by vibration techniques]. In Proceedings of the II Jornadas de Investigación en Construcción. Instituto de Ciencias de la Construcción Eduardo Torroja. Madrid, Spain. 9 p.
Casado, M.; Escudero, I.; Acuña, L.; Vecilla, D.; Basterra, L.A.; Ramón, G.; López, G.; Relea, E. 2009. Técnicas vibratorias aplicadas a madera estructural de Populus x euramericana [Application of vibration techniques to structural timber of Populus x euramericana]. In Proceedings of the 5º Congreso Forestal Español. Avila, Spain. 14 p.
Casado, M.; Acuña, L.; Vecilla, D.; Relea, E.; Basterra, L.A.; Ramón, G.; López, G. 2010. The influence of size in predicting the elastic modulus of Populus x euramericana timber using vibration techniques. In Structures and Architecture. Taylor & Francis Group, London, UK. pp. 2025-2032. URL: http://maderas.uva.es/files/2019/03/2010-Casado-et-al-The-influence-of-size-MOE-Populus-PLG.pdf
Casado, M.; Acuña, L.; Basterra, L.A.; Ramón, G.; Vecilla, D. 2012. Grading of structural timber of Populus x euroamericana clone I-214. Holzforschung 66(5): 633-638. https://doi.org/10.1515/hf-2011-0153
Casado, M.; Acuña, L.; Basterra, L.A.; Heredero, S.; SanMartín, R. 2013. Estimación de la calidad de la madera en rollo de Populus x euramericana mediante ultrasonidos [Estimation of round timber quality of Populus x euramericana by ultrasound]. In Proceedings of the 6º Congreso Forestal Español. Vitoria, Spain. 11p.
Castro-Triguero, R.; García-Macías, E.; Saavedra-Flores, E.; Friswell, M.I.; Gallego, R. 2017. Multi-scale model updating of a timber footbridge using experimental vibration data. Eng Computation 34(3): 754-780. https://doi.org/10.1108/EC-09-2015-0284
Conde, M. 2003. Caracterización de la madera estructural de Pinus nigra Subsp. Salzmannii. [Characterization of structural timber from Pinus nigra Ssp. Salzmannii]. Ph.D. Thesis, UPM, Madrid, Spain.
Conde, M.; Fernández-Golfín, J.I.; Hermoso, E. 2007. Mejora de la predicción de la resistencia y rigidez de la madera estructural con el método de ultrasonidos combinado con parámetros de clasificación visual [Improving the prediction of strength and rigidity of structural timber by combining ultrasound techniques with visual grading parameters]. Mater Construcc 57(288): 49-59. URL: http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/64/77
Correal, E.; Vilches, M.; Iglesias, C. 2013. Clasificación visual de la madera estructural de Castanea sativa del Sistema Mediterráneo Catalán [Visual grading for structural sawn timber of Castanea sativa from Catalan Mediterranean source]. In Proceedings of the 6º Congreso Forestal Español. Vitoria, Spain. 12p.
Crespo, J.; Aira, J.R.; Vázquez, C.; Guaita, M. 2017. Comparative analysis of the elastic constants measured via conventional, ultrasound, and 3-D digital image correlation methods in Eucalyptus globulus Labill. BioResources 12(2): 3728-3743. https://doi.org/10.17356/biores.12.2.3728-3743
Crespo-de-Antonio, M.; Luengas-Carreño, D.; Sánchez-Beitia, S. 2016. Applications of the hole-drilling technique in timber structures. Case studies. In Proceedings of the 10th International Conference on Structural Analysis of Historical Constructions. Leuven, Belgium. pp. 776-781.
Díez, M.R.; Conde, M.; Fernández-Gofín, J.I.; Rosskopf, S. 2000. Clasificación visual de madera estructural de pino laricio (Pinus nigra Arn.): Comparación de resultados usando las normas UNE 56544 y DIN 4074 [Visual grading of structural timber of Salzmann pine (Pinus nigra Arn.): Comparison of results using standards UNE 56544 and DIN 4074]. Inv Agrar-Sist Rec F 9(2): 375-380. URL: https://recyt.fecyt.es/index.php/IA/article/view/2630/2007
Díez, M.R.; Cabrero-Rojo, J.C.; García-Lombardero, R. 2006. Caracterización de la sabina albar con piezas de tamaño casi estructural. Intentos preliminares [Spanish juniper characterization of almost structural size timber. Preliminary results]. In Proceedings of the III Coloquio Internacional sobre Sabinares y Enebrales (género Juniperus): Ecología y gestión forestal sostenible. Soria, Spain. 5 p.
DIN standard 1958. DIN 4074-2: Bauholz für Holzbauteile; Gütebedingungen für Baurundholz (Nadelholz) [Building Timber for Wood Building Components; Quality Conditions for Building Logs (Softwood)]. Normenausschuss Holzwirtschaft und Möbel (NHM), Berlin, Germany.
DIN standard 2012. DIN 4074-1: Sortierung von Holz nach der Tragfähigkeit – Teil 1: Nadelschnittholz [Strength grading of wood – Part 1: Coniferous sawn timber]. Normenausschuss Holzwirtschaft und Möbel (NHM), Berlin, Germany.
Esteban, M. 2003. Determinación de la capacidad resistente de la madera estructural de gran escuadría y su aplicación en estructuras existentes de madera de conífera [Determination of the load carrying capacity of large cross-section structural coniferous timber in existing structures]. Ph.D. Thesis, UPM, Madrid, Spain. URL: http://oa.upm.es/1404/
Esteban, M.; Bobadilla, I.; Arriaga, F.; Íñiguez-González, G.; García, H. 2009. NDT applied to estimate the mechanical properties of the timber of an ancient structure in Valsaín, Segovia (Spain). In Proceedings of the 16th International Symposium on Nondestructive Testing of Wood. Beijing, China. pp. 152-157.
Esteban, M.; Arriaga, F.; Íñiguez-González, G.; Bobadilla, I.; Mateo, R. 2010. Influencia de las fendas en la resistencia de la madera estructural [The effect of fissures on the strength of structural timber]. Mater Construcc 60(299): 115-132. https://doi.org/10.3989/mc.2010.48208
European standard 2008. EN 1927-1: Qualitative classification of softwood round timber – Part 1: Spruces and firs. European Committee of Standardization (CEN). Brussels, Belgium.
European standard 2008. EN 1927-2: Qualitative classification of softwood round timber – Part 2: Pines. European Committee of Standardization (CEN). Brussels, Belgium.
European standard 2010. +A1:2012. EN 14081-2: Timber structures – Strength graded structural timber with rectangular cross section – Part 2: Machine grading; additional requirements for initial type testing. European Committee of Standardization (CEN). Brussels, Belgium.
European standard 2012. EN 1912: Structural timber. Strength classes. Assignment of visual grades and species. European Committee of Standardization (CEN). Brussels, Belgium.
European standard 2016. EN 338: Structural timber. Strength classes. European Committee of Standardization (CEN). Brussels, Belgium.
European standard 2016. EN 14081-1: Timber structures – Strength graded structural timber with rectangular cross section – Part 1: General requirements. European Committee of Standardization (CEN). Brussels, Belgium.
Fernández-Golfín, J.I.; Díez, M.R.; Gutiérrez-Oliva, A. 1998. Caracterización mecánica de la madera aserrada de uso estructural, clasificada visualmente de acuerdo con la norma UNE56544 [Mechanical characterization of sawn timber for structural use, graded visually in accordance with Spanish standard UNE56544]. Mater Construcc 48(252): 45-59. URL: http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/download/463/511
Fernández-Golfín, J.I.; Díez, M.R.; Baonza, M.V.; Gutiérrez-Oliva, A.; Hermoso, E.; Conde, M.; Van den Eynde, V. 2001. Caracterización de la calidad y las propiedades de la madera de Pino laricio (Pinus nigra Arn. salzmannii) [Quality and properties characterization of Salzmann pine (Pinus nigra Arn. salzmannii) timber]. Inv Agrar-Sist Rec F 10(2): 311-331. URL: http://www.inia.es/IASPF/2001/vol10-2/ferna.PDF
Fernández-Golfín, J.I.; Díez, M.R.; Hermoso, E.; Baso, C.; Casas, J.M.; González, O. 2007. Caracterización de la madera de Eucalyptus globulus para uso estructural [Characteristics of eucalyptus wood for structural purposes]. CIDEU 4: 91-100. URL: https://dialnet.unirioja.es/descarga/articulo/2723431.pdf
Galvañ, V.; Palaia, L.; Cervera, F.; Monzo, V. 1994. Strength estimation of decayed timber in old buildings by means of ultrasonic devices. In Proceedings of the 1st European Symposium on Nondestructive Evaluation of Wood. Sopron, Hungary. pp. 156-170.
García-de-Ceca, J.L.; Hermoso, E.; Mateo, R.; Íñiguez-González, G. 2013. Neural network models for the establishment of a structural stress grading methodology using nondestructive techniques. In Proceedings of the 18th International Nondestructive Testing and Evaluation of Wood Symposium. Madison, WI, USA. p. 808.
García-Esteban, L.; García-Fernández, F.; Palacios, P. 2009. MOE prediction in Abies pinsapo Boiss. timber: Application of an artificial neural network using non-destructive testing. Comput Struct 87: 1360-1365. https://doi.org/10.1016/j.compstruc.2009.08.010
García-Iruela, A.; García-Fernández, F.; García-Esteban, L.; Palacios, P.; Simón, C.; Arriaga, F. 2016. Comparison of modelling using regression techniques and an artificial neural network for obtaining the static modulus of elasticity of Pinus radiata D. Don. timber by ultrasound. Compos Part B-Eng 96: 112-118. https://doi.org/10.1016/j.compositesb.2016.04.036
González-Sanz, M. 2012. Estudio sobre el estado de conservación de la cubierta del martinete de Navafría (Segovia) [Assessment of roof structure of Navafría forge (Segovia)]. Final Project Degree. UPM, Madrid, Spain. URL: http://oa.upm.es/36345/
Gutiérrez-Sánchez, R.; Basterra, L.A.; Acuña, L; Casado, M.; Morillas, L.; López, G.; Balmori, J.A. 2019. Sistema y procedimiento de medición sónico para diagnóstico de elementos estructurales de madera [Sonic measurement system and procedure for evaluation of structural timber elements]. ES2685340B2. (G01N 29/04) (G01N 33/46) (2006.1). Spain. URL: https://patentscope.wipo.int/search/es/detail.jsf?docId=WO2018178482
Hermoso, E. 2001. Caracterización mecánica de la madera estructural de Pinus sylvestris L. [Mechanical characterization of Pinus sylvestris L. structural timber]. Ph.D. Thesis, UPM, Madrid, Spain. URL: http://oa.upm.es/644/1/07200117.pdf
Hermoso, E.; Díez, M.R.; Fernández-Golfín, J.I.; Mier, R. 2002. Calidad de la madera aserrada mediante evaluación no destructiva con ultrasonidos [Quality assessment of sawn timber by ultrasound non-destructive testing]. In Proceedings of the II Congreso Nacional de la Madera. Segovia, Spain. 13 p.
Hermoso, E.; Fernández-Golfín, J.I.; Díez, M.R. 2003. Evaluación de la clasificación resistente de la madera estructural mediante ultrasonidos [Evaluation of structural timber strength grading by ultrasound]. In Proceedings of the the 10º Congreso Nacional de Ensayos No Destructivos. Cartagena, Spain. 9 p.
Hermoso, E.; Fernández-Golfín, J.I.; Díez, M.R.; Mier, R. 2007. Aplicación de los ultrasonidos a la evaluación de las propiedades mecánicas de la madera en rollo de pequeño diámetro [Ultrasound application to evaluation of small round timber mechanic properties]. Inf Constr 59(506): 87-95. URL: http://informesdelaconstruccion.revistas.csic.es/index.php/informesdelaconstruccion/article/download/511/586
Hermoso, E.; Mateo, R.; Íñiguez-González, G.; Montón, J.; Arriaga, F. 2016. Visual grading and structural properties assessment of large cross-section Pinus radiata D. Don timber. BioResources 11(2): 5312-5321. https://doi.org/10.15376/biores.11.2.5312-5321
Hillig, E.; Bobadilla, I.; Gonҫalves, R.; Llana, D.F. 2018. The influence of wood polymer composite (WPC) specimen composition and dimensions on wave propagation. Eur J Wood Prod 76(4): 1153-1164. https://doi.org/10.1007/s00107-018-1309-9
Íñiguez-González, G. 2007. Clasificación mediante técnicas no destructivas y evaluación de las propiedades mecánicas de la madera aserrada de coníferas de gran escuadría para uso estructural. [Grading by non destructive techniques and assessment of the mechanical properties of large cross section coniferous sawn timber for structural use]. Ph.D. Thesis, UPM, Madrid, Spain. URL: http://oa.upm.es/415/
Íñiguez-González, G.; Esteban, M.; Arriaga, F.; Bobadilla, I.; Gil, M.C. 2007a. Influence of specimen length on ultrasound wave velocity. In Proceedings of the 15th International Symposium on Nondestructive Testing of Wood. Duluth, MN, USA. pp. 155-159.
Íñiguez-González, G.; Arriaga, F.; Barrett, J.D.; Esteban, M. 2007b. Visual grading of large structural coniferous sawn timber according to Spanish standard UNE 56544. Forest Prod J 57(10): 45-50.
Íñiguez-González, G.; Martínez, R.D.; Bobadilla, I.; Arriaga, F.; Esteban, M. 2009. Mechanical properties assessment of structural coniferous timber by means of parallel and perpendicular to the grain wave velocity. In Proceedings of the 16th International Symposium on Nondestructive Testing of Wood. Beijing, China. pp. 79-84.
Íñiguez-González, G.; Arriaga, F.; Esteban, M.; Bobadilla, I.; González, C.; Martínez, R.D. 2010. In situ non-destructive density estimation for the assessment of existing timber structures. In Proceedings of the World Conference on Timber Engineering (WCTE). Riva di Garda, Italy. 8 p.
Íñiguez-González, G.; Montón, J.; Arriaga, F.; Segués, E. 2015a. In-situ assessment of structural timber density using non-destructive and semi-destructive testing. BioResources 10(2): 2256-2265. URL: https://bioresources.cnr.ncsu.edu/resources/in-situ-assessment-of-structural-timber-density-using-non-destructive-and-semi-destructive-testing/
Íñiguez-González, G.; Arriaga, F.; Esteban, M.; Llana, D.F. 2015b. Reference conditions and modification factors for the standardization of nondestructive variables used in the evaluation of existing structures. Constr Build Mater 101:1166-1171. https://doi.org/10.1016/j.conbuildmat.2015.05.128
Íñiguez-González, G.; Arriaga, F.; Osuna-Sequera, C.; Esteban, M.; Ridley-Ellis, D. 2019. Nondestructive measurements in reclaimed timber from existing structures. In Proceedings of the 21st International Nondestructive Testing and Evaluation of Wood Symposium. Freiburg im Breisgau, BW, Germany. pp. 462-472.
Llana, D.F.; Sanabria, S.J.; Íñiguez-González, G.; Arriaga, F.; Niemz, P. 2013. Experimental and numerical investigation of effect of sawn timber dimensions in ultrasonic velocity measurements for Spanish softwoods. In Proceedings of the 18th International Nondestructive Testing and Evaluation of Wood Symposium. Madison, WI, USA. p. 710.
Llana, D.F.; Íñiguez-González, G.; Arriaga, F.; Niemz, P. 2014. Influence of temperature and moisture content on non-destructive measurements in Scots pine wood. Wood Research 59(5): 769-780. URL: http://www.woodresearch.sk/wr/201405/06.pdf
Llana, D.F. 2016. Influencia de factores físicos y geométricos en la clasificación estructural de la madera mediante técnicas no destructivas [The influence of physical and geometrical factors on timber stress-grading by non-destructive techniques]. Ph.D. Thesis, UPM, Madrid, Spain. https://doi.org/10.20868/UPM.thesis.43696
Llana, D.F.; Íñiguez-González, G.; Arriaga, F.; Wang, X. 2016. Time-of-flight adjustment procedure for acoustic measurements in structural timber. BioResources 11(2): 3303-3317. https://doi.org/10.15376/biores.11.2.3303-3317
Llana, D.F.; Íñiguez-González, G.; Montón, J.; Arriaga, F. 2018a. In-situ density estimation by four nondestructive techniques on Norway spruce from built-in wood structures. Holzforschung 72(10): 871-879. https://doi.org/10.1515/hf-2018-0027
Llana, D.F.; Íñiguez-González, G.; Martínez, R.D.; Arriaga, F. 2018b. Influence of timber moisture content on wave time-of-flight and longitudinal natural frequency in coniferous species for different instruments. Holzforschung 72(5): 405-411. https://doi.org/10.1515/hf-2017-0133
Llana, D.F.; Hermoso, E.; Bobadilla, I.; Íñiguez-González, G. 2018c. Influence of moisture content on the results of penetration and withdrawal resistance measurements on softwoods. Holzforschung 72(7): 549-555. https://doi.org/10.1515/hf-2017-0133
Llana, D.F.; Arriaga, F.; Esteban, M.; Íñiguez-González, G. 2019. Comparison between wet and dry timber visual strength grading according to the Spanish (UNE 56544) and German (DIN 4074-1) standards. Mater Construcc 69(336): e205. https://doi.org/10.3989/mc.2019.03319
López, G.; Basterra, L.A.; Acuña, L. 2018. Infrared thermography for wood density estimation. Infrared Phys Techn 89: 242-246. https://doi.org/10.1016/j.infrared.2018.01.015
Lozano, A.; Guaita, M.; Lorenzo, D.; Benito, J. 2013. Investigation about the decay of the timber structure of an ancient wine cellar in La Rioja (Spain) and sanitation proposal. Adv Mater Res-Switz 778: 976-982. https://doi.org/10.4028/www.scientific.net/AMR.778.976
Mariño, R.A.; Fernández, M.E.; Fernández-Rodríguez, C. 2002. Análisis comparativo de la densidad de la madera de Pinus sylvestris L. mediante la utilización del resistógrafo [Comparative analysis of Pinus sylvestris L. wood density using resistograph]. Revista CIS-Madera 9: 60-70.
Mariño, R.A.; Fernández, M.E.; Fernández-Rodríguez, C.; Méndez, M. 2010. Detection of pith location in chestnut lumber (Castanea sativa Mill.) by means of acoustic tomography and longitudinal stress-wave velocity. Eur J Wood Prod 68: 197-206. https://doi.org/10.1007/s00107-009-0366-5
Martín, M.T. 1994. Some nondestructive methods to determine physical features of wood. In Proceedings of the 1st European Symposium on Nondestructive Evaluation of Wood. Sopron, Hungary. p. 536.
Martínez, J.J. 1992. Características mecánicas de la madera de Pinus pinaster Ait. obtenidas a partir de ensayos con piezas de tamaño estructural [Mechanical properties of Pinus pinaster Ait. structural timber]. Ph.D. Thesis, UPM, Madrid, Spain.
Martínez, R.D.; Bobadilla, I. 2013. Extractor de muestras de madera mediante taladro [Wood sample extractor using a conventional drill]. Spain, ES2525504. (B27C 3/00) (2006.1). Appl. 201330890.
Martínez, R.D. 2016. Métodos no destructivos de estimación de la densidad de madera. [Timber density estimation by non-destructive methods]. Ph.D. Thesis. USC, Lugo, Spain. URL: http://hdl.handle.net/10347/15159
Martínez, R.D.; Calvo, J.; Arriaga, F.; Bobadilla, I. 2018. In situ density estimation of timber pieces by drilling residue analysis. Eur J Wood Prod 76: 509-515. https://doi.org/10.1007/s00107-017-1214-7
Martínez-Sala, R.; Rodríguez-Abad, I.; Díez, M.R.; Capuz, R. 2013. Assessment of the dielectric anisotropy in timber using the nondestructive GPR technique. Constr Build Mater 38: 903-911. https://doi.org/10.1016/j.conbuildmat.2012.09.052
Merlo, E.; Alvarez-González, J.G.; Santaclara, O.; Riesco, G. 2014. Modelling modulus of elasticity of Pinus pinaster Ait. in northwestern Spain with standing tree acoustic measurements, tree, stand and site variables. Forest Syst 23(1): 153-166. http://dx.doi.org/10.5424/fs/2014231-04706
Mier, R. 2001. Clasificación de madera aserrada estructural mediante Inteligencia Artificial: Redes Neuronales [Structural sawn timber classification by artificial intelligent: Neural Networks]. Final Project Degree. UPM, Madrid, Spain.
Montero, M.J. 2013. Clasificación de madera estructural de gran escuadría de Pinus sylvestris L. mediante métodos no destructivos [Grading of large cross section structural timber of Pinus sylvestris L. by non destructive techniques]. Ph.D. Thesis, UPM, Madrid, Spain. URL: http://oa.upm.es/15201/1/MARIA_JOSE_MONTERO_GARCIA_ANDRADE.pdf
Montero, M.J.; de la Mata, J.; Esteban, M.; Hermoso, E. 2015. Influence of moisture content on the wave velocity to estimate the mechanical properties of large cross-section pieces for structural use of Scots pine from Spain. Maderas-Cienc Tecnol 17(2): 407-420. http://dx.doi.org/10.4067/S0718-221X2015005000038
Montón, J. 2012. Clasificación estructural de la Madera de Pinus radiata D. Don procedente de Cataluña mediante métodos no destructivos y su aplicabilidad en la diagnosis estructural [Structural timber grading of Pinus radiata D. Don from Catalonia using NDT and applicability in structural assessment]. Ph.D.
Thesis. UPC. Barcelona, Spain. URL: https://www.tdx.cat/handle/10803/96423#page=1
Montón, J.; Arriaga, F.; Íñiguez-González, G.; Segués, E. 2015. Warp requirements and yield efficiency in the visual grading of sawn radiata pine timber. BioResources 10(1): 1115-1126. URL: https://bioresources.cnr.ncsu.edu/resources/warp-requirements-and-yield-efficiency-in-the-visual-grading-of-sawn-radiata-pine-timber/
Montoya-Morguí, F. 2010. Creació d’una metodologia d’aplicació i assaig del Resistógraf en la diagnosi d’elements estructurals de fusta [Resistograph application and evaluation methodology development for assessment of timber structures]. Final Project Degree. UPC, Barcelona, Spain.
Morales-Conde, M.J.; Rodríguez-Liñán, C.; Rubio, P. 2013. Application of non-destructive techniques in the inspection of the wooden roof of historic buildings: A case study. In Proceedings of the 2nd International Conference on Structural Health Assessment of Timber Structures (SHATIS). Trento, Italy. pp. 233-242.
Morales-Conde, M.J.; Rodríguez-Liñán, C.; Machado, J.S. 2014. Predicting the density of structural timber members in service. The combined use of wood cores and drill resistance data. Mater Construcc 64(315): e029. http://dx.doi.org/10.3989/mc.2014.03113
Morales-Conde, M.J.; Machado, J.S. 2017. Evaluation of cross-sectional variation of timber bending modulus of elasticity by stress waves. Constr Build Mater 134: 617-625. https://doi.org/10.1016/j.conbuildmat.2016.12.188
Oliver, J.V.; Abián, M.A. 2013. Advanced wireless sensors for termite detection in wood constructions. Wood Sci Technol 47: 269-280. https://doi.org/10.1007/s00226-012-0485-8
Osuna-Sequera, C. 2017. Particularidades de la aplicación de las técnicas no destructivas en la estimación de propiedades mecánicas en piezas de madera de gran longitud procedentes de estructuras existentes [Considerations on non-destructive testing applied to estimate mechanical properties in large length timber pieces from existing structures]. Final Project Degree. UPM, Madrid, Spain. URL: http://oa.upm.es/51760/
Osuna-Sequera, C.; Íñiguez-González, G.; Esteban, M.; Llana, D.F.; Arriaga, F. 2017. Particularidades de la aplicación de las técnicas no destructivas en piezas de madera de gran longitud procedentes de estructuras existentes [Considerations on the application of nondestructive testing on large length timber pieces from existing structures]. In Proceedings of LIGNOMAD 17 the 1o Congreso sobre Construcción con Madera y otros Materiales Lignocelulósicos. Barcelona, Spain. pp. 53-57.
Osuna-Sequera, C.; Llana, D.F.; Íñiguez-González, G.; Arriaga, F. 2019a. The influence of cross-section variation on bending stiffness assessment in existing timber structures. Eng Struct. In press.
Osuna-Sequera, C.; Llana, D.F.; Esteban, M.; Arriaga, F. 2019b. Improving density estimation in large cross-section timber from existing structures by increasing the number of non-destructive measurements. Constr Build Mater 211: 199-206. https://doi.org/10.1016/j.conbuildmat.2019.03.144
Palaia, L.; Galvan, V.; Cervera, F.; Monzo, V. 1993. Using ultrasonic waves for the detection of timber decay in old buildings. In Proceedings of the 9th International Symposium on Nondestructive Testing of Wood. Madison, WI, USA. pp. 71-77.
Palaia, L.; Galvan, V.; Cervera, F.; Molina, R. 2000. NDT determination of the strength loss of deteriorated wood, by using ultrasonic techniques and a specific wood tester. In Proceedings of the 12th International Symposium on Nondestructive Testing of Wood. Sopron, Hungary. pp. 327-336.
Palaia, L.; Monfort, J.; Sánchez, R.; Gil, L.; Álvarez, Á.; López, V.; Tormo, S.; Pérez, C.; Navarro, P. 2008. Assessment of timber structures in service by using combined methods of non-destructive testing together with traditional ones. In Proceedings of the 9th International Conference on NDT of Art. Jerusalem, Israel. 10 p.
Pedras, F.; Riesco G.; Remacha, A. 1997. Determinación de las características elásticas de la madera de castaño (Castanea sativa Mill.) mediante ensayos no destructivos [Determination of elastic properties of sweet chestnut (Castanea sativa Mill.) by NDT]. In Proceedings of the 2º Congreso Forestal Español. Pamplona, Spain. pp. 295-300.
Pérez-García, A. 2012. Estimación de parámetros de calidad sobre tableros derivados de la madera a partir de ensayos no destructivos [Wood-board quality parameter estimation by non-destructive testing]. Final Project Degree. UPM, Madrid, Spain. URL: http://oa.upm.es/11295/
Riesco, G. 2001. Estudio de las propiedades físico-mecánicas de la madera de roble (Quercus robur L.) de Galicia en relación con las variables del medio [Study of physico-mechanical properties of European oak (Quercus robur L.) timber from Galicia in relation with environmental variables]. Ph.D. Thesis, UPM, Madrid, Spain.
Rodríguez-Abad, I.; Martínez-Sala, R.; Capuz, R.; Díez, M.R.; García-García, F. 2011. Estudio de la variación del contenido de humedad en el Pinus pinaster Ait. por medio de la técnica no destructiva del georradar [Assessment of the variation of the moisture content in Pinus pinaster Ait. using the non destructive GPR technique]. Mater Construcc 61(301): 143-156. https://doi.org/10.3989/mc.2010.49608
Rodríguez-Liñán, C.; Rubio, P. 1995. Evaluación del estado de la madera, en obras de rehabilitación, mediante técnicas de ultrasonidos y obtención de parámetros resistentes [Evaluation of wood conservation works by ultrasound techniques and obtention of resistance parameters]. Inf Constr 47(440): 5-22. https://doi.org/10.3989/ic.1995.v47.i440.1044
Rodríguez-Liñán, C.; Rubio, P. 2000. Evaluación del estado de la madera, en obras de rehabilitación, mediante técnicas de ultrasonidos [Timber assessment by ultrasound techniques in refurbishment works]. Universidad de Sevilla, Sevilla, Spain. URL: https://expobus.us.es/omeka/items/show/883
Rojas, J.A.M.; Alpuente, J.; Postigo, D.; Rojas, I.M.; Vignote, S. 2011. Wood species identification using stress-wave analysis in the audible range. Appl Acoust 72: 934-942. https://doi.org/10.1016/j.apacoust.2011.05.016
Ruano, A.; Zitek, A.; Hinterstoisser, B.; Hermoso, E. 2019. NIR hyperspectral imaging (NIR-HI) and μXRD for determination of the transition between juvenile and mature wood of Pinus sylvestris L. Holzforschung 73(7): 621-627. https://doi.org/10.1515/hf-2018-0186
Rubio, P. 1997. Evaluación del estado de la madera mediante técnicas de ultrasonidos [Assessment of timber by ultrasound techniques]. Ph.D. Thesis. US, Sevilla, Spain. URL: http://hdl.handle.net/11441/23937
Salamanca, M. 2017. Estimación mediante penetrómetros de la densidad en madera aserrada de las especies de coníferas y frondosas más habituales en construcción en España [Study on the estimation, by penetrometers, of the density of sawn wood of the most common coniferous and leafy species used in construction in Spain]. Final Project Degree. UPM, Madrid, Spain.
Sánchez-Beitia, S.; Crespo-de-Antonio, M.; Acuña, L. 2015. Applicability of the Hole-Drilling procedure for stresses quantification in timber bending elements in service. Constr Build Mater 93: 798-805. https://doi.org/10.1016/j.conbuildmat.2015.05.091
Santaclara, O.; Fernández, A.; Merlo, E.; Guaita, M. 2009. Técnicas no destructivas y ensayo mecánico en madera aserrada de gran escuadría de Pseudotsuga menziesii [Nondestructive testing and mechanical testing of large cross-section Pseudotsuga menziesii sawn timber]. In Proceedings of the V Congreso Nacional y II Congreso Ibérico AgroIngeniería. Lugo, Spain. 9 p.
Santaclara, O.; Merlo, E. 2011. Acoustic segregation of Pinus pinaster logs for structural lumber production according to strength classes. In Proceedings of the 17th International Nondestructive Testing and Evaluation of Wood Symposium. Sopron, Hungary. p. 755.
Sevilla, S.; Bobadilla, I.; Martínez, R.D.; Esteban, M.; Llana, D.F. 2013. Non-destructive methods to estimate the physical aging of Superpan. In Proceedings of the 18th International Nondestructive Testing and Evaluation of Wood Symposium. Madison, WI, USA. p. 637.
Soto-Martínez, I. 2010. Estudio de la relación entre perfiles de densidad y gráficas resistográficas en madera estructural y aplicaciones industriales [Comparison between density and resistograph results in structural timber and industrial applications]. Final Project Degree. UPV, Gandía, Spain. URL: https://riunet.upv.es/handle/10251/9983
Touza, M.C. 2009. Case study: Assessment of the mechanical properties of an old pitch pine timber structure. In Proceedings of the International Conference on Wooden Cultural Heritage. Hamburg, Germany. 8 p.
Touza, M.C.; Soilán, A.; Lorenzo, D. 2013. Evaluation of the load-carrying capacity in bending of large cross section “Pitch pine” beams in standing structures. Adv Mater Res-Switz 778: 410-417. https://doi.org/10.4028/www.scientific.net/AMR.778.410
Troya, M.T.; Navarrete, A. 1994. Study of the degradation of retified wood through ultrasonic and gravimetric techniques. In Proceedings of the 25th Annual meeting. Bali, Indonesia. 6 p.
UNE standard 1972. UNE 56525: Clasificación de la madera aserrada de construcción [Visual grading of construction sawn timber]. IRANOR/CTN 56 Madera y Corcho. Madrid, Spain.
UNE standard 2011. UNE 56544: Clasificación visual de la madera aserrada para uso estructural. Madera de coníferas [Visual grading for structural sawn timber. Coniferous timber]. AEN/CTN 56 Madera y Corcho. Madrid, Spain.
UNE standard 2013. UNE 56546: Clasificación visual de la madera aserrada para uso estructural. Madera de frondosas [Visual grading for structural sawn timber. Hardwood timber]. AEN/CTN 56 Madera y Corcho, Madrid, Spain.
UNE standard 2014. UNE 41809: Estructuras de madera existentes. Uso del penetrómetro para el diagnóstico de los elementos de madera de edificios existentes [Existing wood structures. Use of penetrometer in wood elements diagnosis in existing buildings]. AEN/CTN 41 Construcción, Madrid, Spain.
UNE standard 2018. UNE 56547: Clasificación visual de los postes de madera para líneas aéreas [Visual classification for wood overhead poles]. CTN 56 Madera y Corcho, Madrid, Spain.
Vázquez, C.; Gonҫalves, R.; Bertoldo, C.; Baño, V.; Vega, A.; Crespo, J.; Guaita, M. 2015. Determination of the mechanical properties of Castanea sativa Mill. using ultrasonic wave propagation and comparison with static compression and bending methods. Wood Sci Technol 49: 607–622. https://doi.org/10.1007/s00226-015-0719-7
Vega, A.; Dieste, A.; Guaita, M.; Majada, J.; Baño, V. 2012. Modelling of the mechanical properties of Castanea sativa Mill. structural timber by a combination of nondestructive variables and visual grading parameters. Eur J Wood Prod 70(6): 839-844. https://doi.org/10.1007/s00107-012-0626-7
Vega, A. 2013. Caracterización mecánica de la madera estructural de Castanea sativa Mill. clasificación visual y evaluación mediante métodos no destructivos [Mechanical characterization of Castanea sativa Mill. structural sawn timber: visual grading and nondestructive testing evaluation]. Ph.D. Thesis. USC, Lugo, Spain. URL: https://minerva.usc.es/xmlui/handle/10347/9345
Vega, A.; Arriaga, F.; Guaita, M.; Baño, V. 2013. Proposal for visual grading criteria of structural timber of sweet chestnut from Spain. Eur J Wood Prod 71: 529-532. https://doi.org/10.1007/s00107-013-0705-4
Vega, A.; Gonzalez, L.; Fernandez, I.; Gonzalez, P. 2019a. Grading and mechanical characterization of small-diameter round chestnut (Castanea sativa Mill.) timber from thinning operations. Wood Mater Sci Eng 14(2): 81-87. https://doi.org/10.1080/17480272.2017.1387174
Vega, A.; Gonzalez, L.; Rodríguez, S.; Hevia, A. 2019b. Prediction of the sawing yield of Pinus pinaster and Pinus radiata structural timber from thinning operations through Nondestructive Techniques. In Proceedings of the 21st International Nondestructive Testing and Evaluation of Wood Symposium. Freiburg im Breisgau, BW, Germany. pp. 577-583.
Vilches, M.; Correal, E. 2009. Aplicación del resistógrafo para la determinación de las propiedades de la madera [Using a resistograph to determine wood properties]. In Proceedings of the 5º Congreso Forestal Español. Avila, Spain. 8 p.
Vilches, M.; Labèrnia, C.; Rodríguez, V. 2015. Assessment through NDT of the state of timber structures of the historic buildings of Catalonia. COST Action FP 1101 Assessment, reinforcement and monitoring of timber structures. pp 209-216.
Villacorta-Calvo, J.J.; Izquierdo-Fuente, A.; Val-Puente, L.; Suárez, L.; Martínez, R.D.; Morillas, L.; Basterra, L.A. 2019. AmemoMe: Diseño e implementación de un sistema de medida basado en acelerómetros MEMS para el análisis de los modos de vibración de una estructura de madera [AmemoMe:
Accelerometers MEMS measurement system design and implementation to analyze vibration modes on a timber structure]. In Proceedings of LIGNOMAD 19 the 2o Congreso sobre Construcción con Madera y otros Materiales Lignocelulósicos. Santiago de Compostela, Spain. pp. 72-76.
Villanueva, J.L. 2009. Caracterización mecánica de rollizos de sabina (Juniperus thurifera L.) de Castilla y León. Prueba de clasificación visual y evaluación mediante resonancia [Mechanical characterization of Spanish juniper (Juniperus thurifera L.) round timber from Castilla y León. Visual grading and resonance evaluation]. Final Project Degree. UdL, Lérida, Spain. URL: https://repositori.udl.cat/handle/10459.1/45926
Villasante, A.; Íñiguez-González, G.; Puigdomenech, L. 2019. Comparison of various multivariate models to estimate structural properties by means of non-destructive techniques (NDTs) in Pinus sylvestris L. timber. Holzforschung. 73(4): 331-338. https://doi.org/10.1515/hf-2018-0103
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2020-04-01
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F. Llana, D., Íñiguez-González, G., Díez, M. R., & Arriaga, F. (2020). Nondestructive testing used on timber in spain: A literature review. Maderas. Ciencia Y Tecnología, 22(2), 133–156. Retrieved from https://revistas.ubiobio.cl/index.php/MCT/article/view/3929
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