Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2003.04a
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- Pages.119-124
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- 2003
An Experimental Study on the Fatigue Crack Propagation Behavior Under Mixed-Mode Single Overload
혼합모드 단일과대하중 하의 피로균열 전파거동에 관한 실험적 연구
- Published : 2003.04.23
Abstract
In this study, retardation behavior of fatigue crack under single overloading of the mixed mode I+II state was experimentally investigated. To produce single overload in the mixed mode I+II state, the compact tension shear (CTS) specimen and loading device were used. The propagation tests for fatigue crack were performed under mode I loading overloading afterwards. We examined the observed deformation aspects, variation of fatigue life and crack propagation rate, and the aspects of retardation behavior from tests. The retardation effect of mixed-mode single overload on fatigue crack propagation behavior was smaller than that of mode I single overload. It has been confirmed that the retardation behavior did not immediately appear and the retardation length was short when the component of mixed-mode overload was changed.
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