SUS-304강 용접부의 잔류응력이 피로균열진전속도에 미치는 영향

Effect of Residual Stress on Fatigue Crack Growth Rate at Welds of SUS-304 Steel

  • 이택순 (영남대학교, 기계공학과) ;
  • 양현태 (영남대학교, 기계공학과)
  • 발행 : 1997.08.01

초록

In the weldmentsm the crack propagation rate is changed due to the residual stress. The crack propagation rate is high in the region with the residual stress. However it shows rhw same behavior with the base metal in the region that does not include the residual stress. The fatigue crack growth rate for the material with residual stresses can be predicted more precisely by using the effective stress ratio. The difference between experimental results and prediction results in the initial stage seems to be due to the redistribution of residual stresses and microstructural change.

키워드

참고문헌

  1. 대한기계학회 추계학술대회 복합응력장 하의 균열부재에 대한 잔류수명 평가방법 개발 조창희;김상태;권재도
  2. 스테인리스강 편람 長谷川正義
  3. 대한용접학회지 v.8 no.4 AJM을 이용한 HDM에 의한 잔류응력 계측에 관한 연구 최병길;박영조;이택순;전상윤
  4. Determining Residual Stresses by the Hole-Drilling Strain-Gage Method
  5. Measurement of Residual Stress by the Hole-Drilling Strain-Gage Method
  6. 용접학회지 v.13 no.4 피로균열이 진전할 때 용접잔류응력의 재분포와 그 영향 이용복;조남익
  7. Effect of Residual Stress on Fatigue Crack Growth in Steel Weldments Under Constant and Variable Amplitude Loads G. Glinka
  8. Eng. Frac. Mech. v.24 Residual Stress Effects in Fatigue Crack Growth J. Woodtli;W. Muster