Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Fatigue Crack Propagation Behavior in STS304 under Mixed Mode Loading

혼합모드 하중에서의 STS304의 피로균열 전과거동

  • Song, Sam-Hong (Dept.of Mechanical Engineering, Korea University) ;
  • Lee, Jeong-Moo (Dept.of Mechanical Engineering, Graduate School of Korea University)
  • 송삼홍 (고려대학교 기계공학과) ;
  • 이정무 (고려대학교 대학원 기계공학과)
  • Published : 2001.09.01
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Abstract

The use of fracture mechanics has traditionally concentrated on crack growth under an opening mechanism. However, many service failure occur from cracks subjected to mixed mode loadings. Hence, it is necessary to evaluate the fatigue behavior under mixed mode loading. Under mixed mode loading conditions, not only the fatigue crack propagation rate is of importance, but also the crack propagation direction. The mode I and II stress intensity factors of CTS specimen were calculated using elastic finite element method. The propagation behavior of the fatigue crack of the STS304 steeds under mixed mode loading condition was evacuated by using stress intensity factors $K_I$ and $K_II. The MTS criterion and effective stress intensity factor were applied to predict the crack propagation direction and the fatigue crack propagation rate.

Keywords

References

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