EFFECT OF ARTIFICIAL WEATHERING ON PHYSICAL AND MECHANICAL PROPERTIES OF WOOD

Authors

  • Vinicius Borges de Moura Aquino Universidade Federal do Sul e Sudeste do Pará, Departamento de Engenharia Civil, Santana do Araguaia, PA - Brasil
  • Marilia Silva Bertolini Universidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Engenharia Industrial Madeireira, Itapeva, SP - Brasil
  • Cesar Augusto Galvão de Morais Universidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Engenharia Industrial Madeireira, Itapeva, SP - Brasil
  • Tiago Hendrigo Almeida Instituto Senai de Inovação Biomassa, Santa Luzia, MS - Brasil
  • Diego Henrique Almeida Universidade Federal de Rondônia, Departamento de Engenharia Civil, Porto Velho, RO - Brasil
  • Francisco Antonio Rocco Lahr Universidade de São Paulo, Escola de Engenharia de São Paulo, São Carlos, SP - Brasil
  • André Luis Christoforo Universidade Federal de São Carlos, Departamento de Engenharia Civil, São Carlos, SP - Brasil

Keywords:

Artificial weathering, Eucalyptus sp, Goupia glabra

Abstract

When wood is exposed outdoors, a combination of chemical and mechanical factors and solar radiation contribute to what is described as weathering, being the main degradation agent in this environment. This paper aims to investigate the effect of artificial weathering on mechanical and physical properties of Eucalyptus sp. and Cupiúba (Goupia glabra) woods simulating natural weathering effects. Samples were aged in UV radiation chamber with humidity and temperature control for 100, 200, 300 and 400 hours, considering aging cycles according to ASTM G154 (2006). Wood properties investigated were Conventional value of strength in static bending (fM), Modulus of elasticity in static bending (EM), strength in compression parallel to grain (fc0) and Janka Hardness (fH) according to ABNT NBT 7190 (1997). Effects of artificial weathering on wood properties were evaluated by statistical analysis at 5% significance level. Most of the wood properties investigated did not present significant changes with the aging performed, however, it was noted a decrease in the absolute values of the wood properties absolute values during the aging process. Only fH of Cupiúba wood aged for 100 and 200 hours presented significative performance loss at the significance level considered, which can be related to changes on the wood surface due to weathering exposure.

Keywords: Artificial weathering; Eucalyptus sp; Goupia glabra

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Published

2021-08-30

How to Cite

Aquino, V. B. de M., Bertolini, M. S., de Morais, C. A. G., Almeida, T. H., Almeida, D. H., Lahr, F. A. R., & Christoforo, A. L. (2021). EFFECT OF ARTIFICIAL WEATHERING ON PHYSICAL AND MECHANICAL PROPERTIES OF WOOD. Revista Árvore, 45(1), https://doi.org/10.1590/1806–908820210000034. Retrieved from https://revistaarvore.ufv.br/rarv/article/view/252386

Issue

Revista Árvore, Viçosa-MG, v.45, 2021

Section

Nature Conservation

License

All authors agreed to submit the work to Revista Árvore and granted the exclusive license to publish the article. The authors affirm that it is an original work and has not been previously published elsewhere. The scientific content and opinions expressed in the article are the sole responsibility of the authors and reflect their opinions, not necessarily representing the opinions of the editorial board of Revista Árvore or of the Society of Forest Investigations (SIF).

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