911 繊維含有率が異なる GFRP 切欠平板の疲労損傷

概要

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An experimental program is presented which examines the effects of the fiber content and the polishing of notch root surface on the fatigue damage initiation for notched GFRP plates. This is accomplished by obtaining experimental data on notched plates of a glass fiber-reinforced polycarbonate under fatigue tests. The process of initiation and growth of fatigue damage was measured by means of the luminance measurement technique with a CCD camera. Closer observation on the fatigue cracks on the notch root surface revealed that numerous microcracks initiated at the end corner of glass fiber in the early stage of the fatigue life. Several microcracks joined together and grew into a main crack. For low fiber content, the number of loading cycles to fatigue damage initiation of the polished specimen were longer than that of the non-polished specimen.
一般社団法人日本機械学会の論文
2002-09-20