Proceedings of the Korea Committee for Ocean Resources and Engineering Conference (한국해양공학회:학술대회논문집)

Korean Society of Ocean Engineers (한국해양공학회)
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The Comparison of Weldability in Hybrid & Laser Welded Ship Structure A-grade Steel

조선용 A-grade 강재에 대한 하이브리드 및 레이저 용접부의 용접성 비교

  • Oh, Chong-In (Department of Ocean & Naval Architecture Engineering, Chosun University) ;
  • Park, Ho-Kyung (Department of Ocean & Naval Architecture Engineering, Chosun University) ;
  • Jeong, Eun-Young (Department of Ocean & Naval Architecture Engineering, Chosun University) ;
  • Rajesh, S.R (Department of Ocean & Naval Architecture Engineering, Chosun University) ;
  • Bang, Han-Sur (Department of Aerospace & Naval Architecture Engineering, Chosun University)
  • 오종인 (조선대학교 일반대학원 선박해양공학과) ;
  • 박호경 (조선대학교 일반대학원 선박해양공학과) ;
  • 정은영 (조선대학교 일반대학원 선박해양공학과) ;
  • ;
  • 방한서 (조선대학교 공과대학 항공조선공학부)
  • Published : 2006.11.16
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Abstract

Recently many research are going on in the field of application of Laser and Laser-Arc hybrid welding for superstructures such as ship-structures, transport vehicles etc. Therefore in this study an optimized welding condition and numerical simulation for hybrid welding by using previous numerical analysis which is used to calculate the heat source for Laser and Laser-Arc hybrid welding has been analyzed. For this purpose, fundamental welding phenomena of hybrid process(Laser+MIG) are determined based on the experiments. In order to calculate temperature and residual stress distribution in Laser and Laser-Arc hybrid welds, finite element heat source model is developed on the basis of experiment results and characteristics of temperature and residual stress distribution in Laser and Laser-Arc hybrid welds are understood from the result of simulation and found comparable to the experimental values.

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