212 擬似等方アルミナFRP積層板の疲労損傷過程(OS 高分子および高分子複合材料)

概要

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This paper describes fatigue properties of a quasi-isotropic [0/+45/-45/90]s Alumina. FRP laminates. Matrix crackgrowth behaviors in the laminates under static and fatigue loadings have been studied. Detailed experimental observations were made on the initiation and the growth of individual cracks in 90, -45 and 45 deg plies. Distinctly different crack growth behavior was obtained in each lamina under fatigue loading. At the first of fatigue process, reduction of the stiffness in the laminates due to the 90 deg transverse matrix cracking was obtained. After that, the reduction of that didn't occur, but the transverse cracks in the 90 deg layer were saturated. And then, some delaminations were initiated after the -45 and +45 deg layer's cracks were observed. A higher density of each ply clacks and delaminations would be a characteristic of the fatigue damage in quasi-isotropic Alumina FRP laminates.
一般社団法人日本機械学会の論文
2000-11-24