203 ガラス繊維強化複合材料の界面強度評価(高分子/高分子基複合材料)

概要

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Cruciform specimen method is one of tests evaluating fiber/matrix interfacial strength. The advantage of this technique is to eliminate the effect of stress singularity of the fiber end and the intersecting interface edges. However, a problem is remaining for the test ; i.e. the interfacial debonding initiation location is unclear. This is the most critical issue for evaluating the interfacial strength because stress state is different for individual location. Therefore, an analytical discussion is necessary to specify the debonding initiation location under a certain interfacial failure criterion. This paper focuses on where the interfacial debonding initiates from in a cruciform specimen having various cruciform arm angles. By combining analytical and experimental results, both the debonding initiation location and the interfacial normal and shear strength are clarified under assumed interfacial failure criteria.
一般社団法人日本機械学会の論文
2009-11-06