한국해양공학회:학술대회논문집 (Proceedings of the Korea Committee for Ocean Resources and Engineering Conference)
- 한국해양공학회 2002년도 추계학술대회 논문집
- /
- Pages.73-78
- /
- 2002
단일과대하중이 피로균열성장에 미치는 영향에 관한 연구
A Study on the Effect of a Single Overload on Fatigue Crack Retardation
-
김경수
(인하대학교 선박공학과)
;
-
김성찬
(인하공업전문대학교 선박해양시스템과)
;
-
심천식
(인하대학교 선박공학과)
;
- 박진영 (인하대학교 선박공학과) ;
- 이창환 (인하대학교 선박공학과)
-
Kim, Kyung-Su
(Dept. of Naval Architecture, Inha University)
;
-
Kim, Sung-Cahn
(Dept. of Ship & Ocean System, Inha Tehnical Collegue)
;
-
Shin, Chun-Sik
(Dept. of Naval Architecture, Inha University)
;
- Park, Jin-Young (Dept. of Naval Architecture, Inha University) ;
- Lee, Chang-Hwan (Dept. of Naval Architecture, Inha University)
- 발행 : 2002.10.25
초록
Ships and ocean structures are generally under random loading. Various type of variable-amplitude loading affects fatigue crack growth and fatigue life. However interaction effects due to irregularity of loading including random loading have not explained exactly and it is difficult to examined fatigue crack growth behaviour and fatigue life for this reason. Therefore in this paper crack growth tests with constant-amplitude loading including a single overload were conducted to measure plastic zone size near crack tip of DENT specimen. And the observed plastic zone sized were discussed in terms of crack growth rate. As a result of this the effect the plastic rue size due to the overload is examined on the effect on crack growth rate and, consequently, fatigue life.
키워드