Criterion for the final failure of a pin joint with bearing damage in CFRP laminates under cyclic tensile loading

Satoshi Seike, Yoshihiro Takao, Wenxue Wang

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

抄録

A mechanically fastened joint in Carbon Fiber Reinforced Plastic (CFRP) laminates is widely used due to its advantages in inspection, replacement and reliability, even though it has disadvantages in stress concentration. It should be designed to have the bearing failure mode because its strength is high and it fails non-catastrophically. It was derived that in the static loading, the critical damage yielding shear matrix crack was kink and the critical condition to the final failure was the appearance of kink in every inner 0° layer. Here it is shown that in the fatigue loading the critical damage that yields shear matrix crack is almost always kink-like damage along the collapse front. Next, the non-elastic elongation of a hole at the maximum load is focused on and its capability is figured out for various stacking sequences. The critical value UNE,F *, which is a non-elastic elongation subtracted by the initial rapid increase depending on the stochastic conditions such as the smoothness of hole surface and the force alignment, is around 35μm and independent of the maximum load and frequency. The critical condition to the final fatigue failure at UNE,F * is roughly the appearance of the kink-like damage in the most of inner 0° layers.

本文言語英語
ホスト出版物のタイトルAdvanced Composites for Efficiency and Environment - The US-Japan Conference on Composite Materials 2008, US-Japan 2008
出版ステータス出版済み - 2008
イベントUS-Japan Conference on Composite Materials 2008, US-Japan 2008 - Tokyo, 日本
継続期間: 6月 6 20086月 7 2008

その他

その他US-Japan Conference on Composite Materials 2008, US-Japan 2008
国/地域日本
CityTokyo
Period6/6/086/7/08

!!!All Science Journal Classification (ASJC) codes

  • セラミックおよび複合材料

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