Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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A Study of the Fatigue Crack Propagation Behavior According to the Moment Change using Infrared Thermography

열화상기술을 이용한 모멘트 변화에 따른 피로균열진전 연구

  • 김경석 (조선대학교 기계설계공학과) ;
  • 정현철 (조선대학교 기계설계공학과) ;
  • 박찬주 (조선대학교 기계설계공학과 대학원) ;
  • 정덕운 (조선대학교 첨단부품소재공학과 대학원) ;
  • 장호섭 (조선대학 레이저응용 신기술개발 연구센터)
  • Received : 2010.02.23
  • Accepted : 2010.03.24
  • Published : 2010.06.15
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Abstract

The objective of this study is to propose an effective method for measurement and analysis of fatigue crack. A technique that can measure the statue of fatigue crack propagation fast and correctly for enhancing safety of constructions and securing reliability is necessary. Moreover, the crack propagation behavior characteristics evaluation technique has to be developed using this technique. In this paper, fatigue crack was caused via the fatigue experiment with repeated load on the CT specimen that is made up of STS304. Fatigue crack propagation was measured by tracing the position of the maximum temperature according to the cycles using infrared thermography. The crack growth characteristics was evaluated by applying the moment values on the measuring area to the measured value. As a result of this study, the possibility that the infrared thermography could be applied to measure the fatigue crack was identified. Moreover, it was identified that fatigue crack propagation have a relationship with the moment value of construction.

Keywords

References

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