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A Study on the Fatigue Crack Growth of Cracks in Mechanical Joints  

허성필 (성균관대학교 대학원 기계공학과)
양원호 (성균관대학교 기게공학부)
정기현 (성균관대학교 대학원 기계공학과)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.10, no.1, 2002 , pp. 187-194 More about this Journal
Abstract
It has been reported that cracks in mechanical joints is generally under mixed-mode and there is critical inclined angle at which mode I stress intensity factor becomes maximum. The crack propagates in arbitrary direction and thus the prediction of crack growth path is needed to provide against crack propagation or examine safety. In order to evaluate the fatigue life of cracks in mechanical joints, horizontal crack normal to the applied load and located on minimum cross section is major concern but critical inclined crack must also be considered. In this paper mixed-mode fatigue crack growth test is performed far horizontal crack and critical inclined crack in mechanical joints. Fatigue crack growth path is predicted by maximum tangential stress criterion using stress intensity factor obtained from weight function method, and fatigue crack growth rates of horizontal and inclined crack are compared.
Keywords
Fatigue crack growth; Mechanical joint; Stress intensity factor; Mixed-mode; Crack growth path;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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