Title: Effect of Microdefects on Tensile Properties of High Volume Fraction SiC_p/Al Composites
Abstract: The finite element models of high volume fraction SiCP/Al composites with microdefects were established.And the tensile mechanical properties of these composites were calculated.Through numerical simulation of typical microdefects as voids and interface debondings,it was found that the voids have a little effect on the tensile properties of this material.While interface debondings have the greatest effect on carrying load capability of the composites.Areas of debonded interfaces are inverse proportion to carrying load abilities of SiCP/Al composites.Different relative position between microdefects have different effect on tensile mechanical properties.Interfaces debonding near the void degrade carrying load abilities more than interfaces debonding far from the void.From the analysis of multi particulates models,it was found that the nonlinear stress-strain curve of high volume fraction SiCP/Al composites was correlated with gradual particulate interfaces debonding.Debonding proportion increase rapidly at the initial loading stage,and increase slowly near the breakage.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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