Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Fatigue Crack Propagation Behavior of 316L Stainless Steel and Frequency Characteristics of its Acoustic Emission

316L 스테인리스강의 피로균열 진전 거동과 음향방출신호의 주파수 특성

  • 이상기 (부경대학교 재료공학과 대학원) ;
  • 도재윤 (부산기능대학) ;
  • 남기우 (부경대학교 재료공학부) ;
  • 강창룡 (부경대학교 재료공학부) ;
  • 안석환 (부경대학교 기계공학부)
  • Published : 2000.05.31
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Abstract

We investigated the fatigue crack propagation of base metal, weld metal and heat attected zone in 316L stainless steel. And we analysed acoustic emission signals during the fatigue test by time-frequency analysis method. The specimens of weld metal and HAZ had longer fatigue life and slower rate of crack propagation better than base metal. And as a result of time-frequency was 200-300 kHz was obtained by fatigue crack propagation and 500 kHz was obtained by dimple and separate of inclusion.

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