International journal of materials engineering · 2014 · 11 citations · 2 references
Natural SciencesMaterials EngineeringMaterials ScienceMaterials CharacterizationMechanical Behavior Of MaterialsStructural MaterialsFracture ToughnessMechanical CharacterizationMechanical PropertiesStrength Of MaterialsStrength PropertiesWood MaterialsBending Fracture ToughnessMechanical Properties Of TimberPhysical Properties Of TimberTensile Strength EstimationToughnessWood Density EffectsWood Density EstimationWood Mechanical Properties
The wooden toughness is a mechanical property of interest in the project in the case of the design of structures and structural elements subjected to impact loads, however, not an integral part of the mechanical properties commonly investigated, such as the modulus of elasticity and strength modulus in tensile, in bending and others. In order to corroborate with the most knowledge about the toughness of wood, this study aimed to investigate the possibility of estimating the toughness by the apparent density and strength in bending, using linear, quadratic and cubic regression models. Were used 15 species of wood, equally distributed in the five strength classes defined by the Brazilian standard ABNT NBR 7190:1997, enabling greater coverage of the results to estimate the toughness of wood for various species. The results of the regression models showed to be representative all the functions evaluated, presenting the quadratic fits in function of the apparent density the best results.
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