- 표면균열의 피로성장거동연구 -인장 반복 하중하에서의 균열형상비 예측-
- ㆍ 저자명
- 최용식,양원호,김재원
- ㆍ 간행물명
- 自動車工學會誌
- ㆍ 권/호정보
- 1990년|12권 2호|pp.43-50 (8 pages)
- ㆍ 발행정보
- 한국자동차공학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
The fatigue growth behavior of surface cracks cannot be adequately predicted solely by stress intensity factor analysis. This is caused by different plastic deformation due to variations in the stress field triaxiality along the crack tip. Therefore, a new model which accounts for the crack closure phenomenon is proposed in this paper to predict the fatigue crack growth patterns for surface cracks. Fatigue tests were performed to develop the new model for the prediction and to assess the accuracy of the analysis. The predicted crack growth behavior for PMMA and Aluminum alloy 7075-T6 materials agreed well with the experimental data.