Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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A Study on the Fatigue Life Assessment for Load-carrying Fillet Welded Joints using Stress Intensity Factor

응력확대계수를 이용한 하중 전달형 필릿 용접부의 피로강도 평가에 관한 연구

  • Kim, Myung-Hyun (Dept. of Naval Architecture & Ocean Engineering, Pusan National University) ;
  • Kang, Sung-Won (Dept. of Naval Architecture & Ocean Engineering, Pusan National University) ;
  • Kim, Hyoung-Rae (Dept. of Naval Architecture & Ocean Engineering, Pusan National University)
  • 김명현 (부산대학교 공과대학 조선해양공학과) ;
  • 강성원 (부산대학교 공과대학 조선해양공학과) ;
  • 김형래 (부산대학교 공과대학 조선해양공학과)
  • Published : 2008.12.31
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Abstract

It is well known that there exist two typical fatigue crack initiation locations in ship structures: one is the weld toe and the other is the weld root where partial penetration weld is performed. In particular, it is important for fillet weldments to avoid weld root cracking in order to prevent catastrophic failure particularly in ship structures. Therefore detail considerations are required for cruciform joints with partial penetration when there is a possibility of weld root crack initiation. For these reasons, fatigue tests on welded joints were performed in this study. Concept of stress intensity factor(SIF) by means of fracture mechanics is applied for predicting fatigue life of fillet welded joints.

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References

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