Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Prediction d Fatigue Growth Behavior of Short Cracks

짧은 균열의 피로성장거동예측

  • 최용식 (성균관대학교 기계공학과) ;
  • 우흥식 (동국대학교 산업안전공학과) ;
  • 한지원 (호서대학교 산업안전공학과)
  • Published : 1993.12.01
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Abstract

The growth of short cracks can be well described in terms of the effective stress intensity factor range, which is calculated on the base of crack closure. The relation between the crack opening SIF and crack length is determined from the experimental results. The crack opening SIF of short cracks, Kop, can be predicted from the crack opening SIF at threshold of long crack, Kop.L. The growth rate of short cracks at notch root can be predicted from the crack opening SIF of short cracks, Kop, and the growth equation of long cracks in region II.

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