Searching for material symmetries in the burr wood of thuja by a direct contact ultrasonic method on spherical samples

Authors

  • Mohammed El Mouridi Université Montpellier
  • Thierry Laurent Université Montpellier
  • Loïc Brancheriau CIRAD
  • Olivier Arnould Université Montpellier
  • Abderrahim Famiri Centre de Recherche Forestière
  • Abdelillah Hakam Université Mohammed
  • Joseph Gril Université Montpellier

Keywords:

material symmetry, ultrasonic method, direct contact, sphere, burr, wood, thuja, beech

Abstract

This work is part of a program that aims at studying the burr wood of thuja (Tetraclinis articulata). The goal of this work is to identify material symmetries of burr wood to improve its machining. To have a sufficient number of data and to limit the variability between samples, an ultrasonic experimental device, in direct contact on spherical samples, has been developed and improved. Until now, the geometry used in direct contact ultrasonic methods was either cubic or polyhedral allowing to obtain, on the same sample, 3 (cube) to 13 (polyhedron) measurements or usable data. By choosing a reasonable angular gap, the spherical geometry allows the ultrasonic velocity to be measured in 133 different directions on the same specimen. We present here the adaptation and development of the ultrasonic experimental device and results obtained on (i) aluminum chosen as a reference material, (ii) beech wood and (iii) burr wood of thuja.

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Author Biographies

Mohammed El Mouridi, Université Montpellier

Laboratoire de Mécanique et Génie Civil, Université Montpellier, Montpellier, France. Équipe des Sciences et Technologie du Bois, Faculté des Sciences de Rabat, Université Mohammed.

Thierry Laurent, Université Montpellier

Laboratoire de Mécanique et Génie Civil, Université Montpellier, Montpellier, France.

Loïc Brancheriau, CIRAD

CIRAD, Département PERSYST, 73 rue J.F. Breton, TA 10/16 34398, Montpellier Cedex 5, France.

Olivier Arnould, Université Montpellier

Laboratoire de Mécanique et Génie Civil, Université Montpellier, Montpellier, France.

Abderrahim Famiri, Centre de Recherche Forestière

Centre de Recherche Forestière- BP 763 Agdal, Rabat, Maroc.

Abdelillah Hakam, Université Mohammed

Équipe des Sciences et Technologie du Bois, Faculté des Sciences de Rabat, Université Mohammed, Rabat, Maroc.

Joseph Gril, Université Montpellier

Laboratoire de Mécanique et Génie Civil, Université Montpellier, Montpellier, France.

How to Cite

El Mouridi, M., Laurent, T., Brancheriau, L., Arnould, O., Famiri, A., Hakam, A., & Gril, J. (2014). Searching for material symmetries in the burr wood of thuja by a direct contact ultrasonic method on spherical samples. Maderas-Cienc Tecnol, 13(3), 285–296. Retrieved from http://revistas.ubiobio.cl/index.php/MCT/article/view/1308

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