Journal of Welding and Joining

  • 제26권4호
  • /
  • Pages.55-60
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  • 2008
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  • 2466-2232(pISSN)
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  • 2466-2100(eISSN)
대한용접접합학회 (The Korean Welding and Joining Society)
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함정용 배전반 용접부의 용접후처리 방법에 의한 피로강도 증대 효과에 관한 연구

A Study on Improvement of Fatigue Strength of Electrical Panel Weldments in Naval Vessels by Post Weld Treatment

  • 김명현 (부산대학교 조선해양공학과) ;
  • 강민수 (부산대학교 조선해양공학과) ;
  • 강성원 (부산대학교 조선해양공학과)
  • 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)
  • 발행 : 2008.08.31
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초록

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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참고문헌

  1. S. S. Seo, K. H. Son, M. K. Park, A Study on the Optimum Structural Design of Naval Vessels, Journal of the Society Naval Architects of Korea, 39-1, (2002) 100-112 (in Korean) https://doi.org/10.3744/SNAK.2002.39.1.100
  2. M. H. Kim, J. Y. Choi, S. W. Kang, J. Y. Chung, Optimum Design for Frame Bracket of Electrical Panels for Improved Fatigue Strength, Journal of the Society Naval Architects of Korea, 43-2, (2006) 206-212 (in Korean) https://doi.org/10.3744/SNAK.2006.43.2.206
  3. MIL-STD-167-1A : Mechanical vibration of shipboard equipment, Department of Defense, USA, 2005
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  5. Haagensen P. J., Maddox S. J., Specifications for weld toe improvement by burr grinding, tig dressing and hammer peening for transverse welds, IIW Commission XIII-Working Group 2, Collaborative Test Program on Improvement Techniques, 1995
  6. S. W. Kang, M. H. Kim, S. H. Kim, W. I. Ha, An Experimental Study of Fatigue Strength of Welded Structures Using Structural Stress and Hot Spot Stress, Journal of the Society Naval Architects of Korea, 42-2, (2005) 129-135 (in Korean) https://doi.org/10.3744/SNAK.2005.42.2.129