Influence of the Number of Load Cycles to Obtain the Stiffness Properties of Angico Preto (Anadenanthera macrocarpa) Wood Specie
作者： Eduardo Chahud , Luiz A. Melgaço N. Branco , Francisco A. Rocco Lahr , André L. Christoforo , Rosane A.G. Battistelle
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.1088.669
关键词: Composite material 、 Operating time 、 Bending 、 Stiffness 、 Charge cycle 、 Young's modulus 、 Mathematics 、 Anadenanthera 、 Compression (physics) 、 Structural engineering 、 Ultimate tensile strength
摘要: The tests used to obtain the stiffness properties of wood are made with two loading cycles, as defined by Brazilian standard ABNT NBR 7190 (Design Timber Structures). However, possibility reducing number cycles allows decrease operating time machine, resulting in reduced spending on electricity during tests. This research aimed investigate, aid analysis variance (ANOVA), influence use three load modulus elasticity compression parallel grain (Ec0), tensile (Et0), bending (Em) and perpendicular (Ec90) Angico Preto (Anadenanthera macrocarpa) specie. For were manufactured 12 samples, totaling 144 specimens. results ANOVA revealed statistical equivalence between for both cycle numbers evaluated, indicating that it is possible carry out a single charge cycle, allowing savings energy operation equipment.
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