Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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A Study on Improvement of Fatigue Strength of Electrical Panel Weldments in Naval Vessels by Post Weld Treatment

함정용 배전반 용접부의 용접후처리 방법에 의한 피로강도 증대 효과에 관한 연구

  • Kim, Myung-Hyun (Naval Architecture & Ocean Engineering, Pusan National University) ;
  • Kang, Min-Su (Naval Architecture & Ocean Engineering, Pusan National University) ;
  • Kang, Sung-Won (Naval Architecture & Ocean Engineering, Pusan National University)
  • 김명현 (부산대학교 조선해양공학과) ;
  • 강민수 (부산대학교 조선해양공학과) ;
  • 강성원 (부산대학교 조선해양공학과)
  • Published : 2008.08.31
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Abstract

Structural reliability of electrical panels installed in naval vessels is of critical importance from structural performance viewpoint. The panels may be exposed to vibration and fatigue loadings from internal and external sources and wave loading which cause fatigue cracking. In this study, common methods such as burr grinding and post weld heat treatment (PWHT), for the fatigue strength improvement of weldments are investigated. Burr grinding is carried out using a electric grinder in order to remove surface defects and improve the weld bead profile. And also PWHT is carried out for the purpose of removing residual. The effectiveness of the two post treatment methods is evaluated in terms of fatigue strength improvement of welded structures.

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References

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