Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)
- Volume 10 Issue 3
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- Pages.165-169
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- 2007
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- 1226-833X(pISSN)
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- 2765-5415(eISSN)
A Study on Fatigue Crack Growth and Stress Intensity Factors of Notch Materials
노치재의 피로균열진전과 응력확대계수 평가에 관한 연구
- Lee, Jong-Hyung (School of Mechanical Engineering, K.I.T) ;
- Lee, Sang-Young (School of Mechanical Engineering, K.I.T) ;
- Yi, Chang-Heon (School of Mechanical Engineering, K.I.T) ;
- Kim, Yun-Gon (School of Mechanical Engineering, K.I.T) ;
- Lim, Chun-Kyoo (School of Mechanical Engineering, K.I.T) ;
- Lee, Chun-Kon (School of Mechanical Engineering, K.I.T) ;
- Kwon, Yung-Shin (School of Mechanical Engineering, K.I.T)
- 이종형 (금오공과대학교 기계공학부) ;
- 이상영 (금오공과대학교 대학원) ;
- 이창헌 (금오공과대학교 대학원) ;
- 김윤곤 (금오공과대학교 대학원) ;
- 임춘규 (금오공과대학교 대학원) ;
- 이춘곤 (금오공과대학교 대학원) ;
- 권영신 (금오공과대학교 대학원)
- Received : 2007.04.25
- Accepted : 2007.08.24
- Published : 2007.08.31
Abstract
Prediction of fatigue duration is attainable from the analysis of the growth rate of the fatigue crack, and the property of the fatigue crack growth is determined by the calculation of the stress intensity factor. And the evaluation of the stress intensity factor, K comes from the stress analysis of the vicinity of crack tip of the continuum. This study describes a simple method to decide the stress intensity factor for the small crack at the sharp edge notches. The proposed method is based on the similarities between elastic stress fields of the notch tip described by two parameters, the stress concentration factor K, the radius of arc of the notch. And it is applicable to the analysis of the semi-elliptical penetration cracks and the edge notches.