3D-ESPI 시스템을 이용하여 결정된 응력집중계수가 피로수명에 미치는 영향에 관한 연구

Fatigue life estimation by the theoretical stress concentration factors are, in general, considerably different from test results. And in calculating stress concentration factor, it is very difficult to consider actual geometry and material property which are the notch shapes, imperfections or defec...

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Bibliographic Details
Published inHan-guk haeyang gonghak hoeji (Online) Vol. 16; no. 1; pp. 46 - 51
Main Authors 김경수(KYUNG-SU KIM), 심천식(CHUN-SIK SHIM)
Format Journal Article
LanguageKorean
Published 한국해양공학회 2002
Subjects
해양공학
Semi-circular Edge Notch 끝단반원노치
3D-ESPI System 3차원 전자스패클패턴 간섭시스템
Strain Distribution 변형률 분포
Stress Concentration Factor 응력집중계수
Fatigue Life 피로수명
3
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ISSN1225-0767
2287-6715

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Summary:Fatigue life estimation by the theoretical stress concentration factors are, in general, considerably different from test results. And in calculating stress concentration factor, it is very difficult to consider actual geometry and material property which are the notch shapes, imperfections or defects of materials such as porosities inclusions and casting defects, etc. Therefore, the paper deals with the experimental method to find out the more exact stress concentration factors by measuring the strain distributions on each specimen by 3D-ESPI(Electronic Speckle Pattern Interferometry) System. Then the fatigue lives are compared between theoretical calculations using stress concentration factors determined by 3D-ESPI system and fatigue test results.
Bibliography:KISTI1.1003/JNL.JAKO200211921056713
G704-000698.2002.16.1.012
http://www.metric.or.kr/info/scholar/content.asp?p_id=29964&s_code=JP
ISSN:1225-0767
2287-6715