PHYSICO-MECHANICAL CHARACTERIZATION OF THE Anadenanthera colubrine WOOD SPECIE

• Published in: Engenharia agrícola Vol. 37; no. 2; pp. 376 - 384
• Main Authors: Christoforo, André L., Aftimus, Bruno H. C., Panzera, Tulio H., Machado, Gilmara de O., Lahr, Francisco A. R.
• Format: Journal Article
• Language: English
• Published: Sociedade Brasileira de Engenharia Agrícola 01.04.2017
• Subjects: Anadenanthera colubrina; analysis of variance (ANOVA); apparent density; physico-mechanical characterization; regression models
• ISSN: 0100-6916; 0100-6916
• DOI: 10.1590/1809-4430-eng.agric.v37n2p376-384/2017

ABSTRACT In Brazil, the characterization of wood is carried out in accordance with the premises established by ABNT NBR 7190standard; however, the determination of wood properties requires the use of equipment, which hinders the wood characterization for the construction professional. To circumvent this problem, the properties of wood strength and stiffness can be estimated through regression models using the apparent density as estimator, being the density a physical property of easy determination. This study aimed to determine 4 physical and 13 mechanical properties of “Angico Branco” wood (Anadenanthera colubrina), and with the aid of regression models based on analysis of variance, estimate the strength and stiffness properties as a function of apparent density. Twelve samples were produced for each test, resulting in a total of 204 experimental determinations. The results of mechanical properties showed consistent performance with other wood species studied, demonstrating their potential use in various applications. From the regression models, only the longitudinal modulus of elasticity in parallel compression to the grain showed a significant result, and the best were obtained with the linear model, which provided determination coefficient (R2) equal to 56.32%.