Application of X-ray technique in nondestructive evaluation of eucalypt wood

Authors

  • M. Tomazello USP
  • S. Brazolin Instituto de Pesquisas Tecnológicas do Estado de São Paulo
  • M. P. Chagas USP
  • J. T. S. Oliveira UFES
  • A. W. Ballarin UNESP
  • C. A. Benjamin UNESP

Keywords:

eucalypts, X-ray densitometry, sapwood, heartwood, density, white rot fungi

Abstract

X-rays were initially used for the inspection of special-purpose wood pieces for quantitative evaluation of wood properties of different species. X-ray densitometry has had its use expanded in dendroclimatology of Picea engelmannii trees. Subsequent laboratories developed applications of X-ray densitometry for environmental, wood science and technology, and related areas. This paper describes the basic methodology of X-ray densitometry applied to the eucalypt wood analysis, as well as presenting the results of applications in three areas: (i) evaluation of wood biodegradation by white rot fungi, (ii) detection of sapwood and heartwood, and (iii) determination of the effect of management on wood properties. The wood decayed by white rot fungi was detected by X-ray densitometry with a decreasing wood density due to the biodegradation of cell wall components. The sapwood and heartwood of eucalypts were separated in response to the attenuation of X-rays, reflected by the wood anatomical structure and chemical composition. Also, in eucalypt trees after the application of irrigation and fertilizationirrigation characteristic wood density profiles were detected. In addition, the significant potential of X-ray densitometry for eucalypt wood research and analysis is discussed.

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Author Biographies

M. Tomazello, USP

Departamento de Ciências Florestais/USP, Piracicaba. SP.

M. P. Chagas, USP

Departamento de Ciências Florestais/USP, Piracicaba. SP.

J. T. S. Oliveira, UFES

Departamento de Ciências Florestais/UFES, Alegre.

A. W. Ballarin, UNESP

Faculdade de Ciências Agronômicas/UNESP, Botucatu.

C. A. Benjamin, UNESP

Faculdade de Ciências Agronômicas/UNESP, Botucatu.

How to Cite

Tomazello, M., Brazolin, S., Chagas, M. P., Oliveira, J. T. S., Ballarin, A. W., & Benjamin, C. A. (2014). Application of X-ray technique in nondestructive evaluation of eucalypt wood. Maderas. Ciencia Y Tecnología, 10(2), 139–150. Retrieved from https://revistas.ubiobio.cl/index.php/MCT/article/view/1397

Issue

Section

Technical Notes