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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2003.4
- 수록면
- 285 - 291 (7page)
이용수
초록· 키워드
오류제보하기
An experimental method to measure Q-parameter in-situ is described. The basic idea comes from the fact
that the side necking near a crack tip indicates the loss of stress triaxiality, which can be scaled by Q. From
the out-of-plane displacement and the in-plane strain near the surface of side necking, stress field averaged
through the thickness is calculated and then Q is determined from the difference between the stress field and
the HRR field corresponding to the identical J-integral. To prove the validity, three-dimensional finite element
analysis has been performed for a CT configuration with side-groove. Q-value which was calculated directly
from the near-tip stress field is compared with that determined by simulating the experimental procedure
according to the proposed method, that is, the Q-value determined from the lateral displacement and the inplane
strain. Also, the effect of location where the displacement and strain are measured is explored.
that the side necking near a crack tip indicates the loss of stress triaxiality, which can be scaled by Q. From
the out-of-plane displacement and the in-plane strain near the surface of side necking, stress field averaged
through the thickness is calculated and then Q is determined from the difference between the stress field and
the HRR field corresponding to the identical J-integral. To prove the validity, three-dimensional finite element
analysis has been performed for a CT configuration with side-groove. Q-value which was calculated directly
from the near-tip stress field is compared with that determined by simulating the experimental procedure
according to the proposed method, that is, the Q-value determined from the lateral displacement and the inplane
strain. Also, the effect of location where the displacement and strain are measured is explored.
목차
Abstract
1. 서론
2. 기초 아이디어
3. 아이디어의 검증-유한요소해석
4. 실험결과
5. 토론
6. 결론
후기
참고문헌
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