G0400-2-3 疲労負荷下におけるCFRPクロスプライ積層板のトランスバースクラック発生評価([G0400-2]機械材料・材料加工部門一般(2):非金属材料の力学)

概要

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The initiation of a transverse crack in CFRP laminates under fatigue loading was investigated. Transverse cracks cause serious damage, such as delamination or fiber breakage. It is essential to understand the mechanism of the transverse crack onset for improving long-term durability and reliability of CFRP laminates. Therefore, a method to evaluate and predict the initiation of a transverse crack in cross-ply CFRP laminates under fatigue loading was researched. Fatigue tests at the various stress levels were performed in order to evaluate the initiation and propagation of the transverse cracks. The analytical method on the basis of Paris law in order to predict the number of cycles of transverse crack initiation was proposed. As the results, we were successful in predicting the initiation of the transverse crack under fatigue loadings by the proposed analysis.
一般社団法人日本機械学会の論文
2010-09-04