Proceedings of the KWS Conference (대한용접접합학회:학술대회논문집)
- 1999.05a
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- Pages.237-240
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- 1999
Fatigue Crack Propagation Characteristics in HAZ of A106 Gr B Steel Pipe Weldments
A106 Gr B강 배관용접부의 잔류응력해석 및 피로균열성장특성
Abstract
In this study, residual stresses of the weldment were calculated by finite element analysis(FEA) and experiment. And, the crack closure behaviour and fatigue crack growth characteristics in field of residual stress of A106 Gr B steel pipe weldment were investigated under various stress ratio. Obtained results are as follows. I)
Keywords
- heat affected zone;
- residual stress;
- stress redistribution;
- crack closure;
- K$_{}$ op/;
- K$_{}$ res/;
- $\Delta$K$_{}$ eff/;
- HAZ
- 열영향부;
- 잔류응력;
- 응력재분포;
- 균열닫힘;
- 균열개구 응력확대계수;
- 잔류응력 확대계수;
- 유효응력 확대계수범위;