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A Study on the Evaluation of the Fracture Toughness for the Narrow Gap Welding Part of Nuclear Piping

원전배관 협개선 용접재 파괴인성 평가에 관한 연구

  • Huh, Yong (Department of Mechanical Engineering, Sungkyunkwan University) ;
  • Park, Soo (Department of Mechanical Engineering, Sungkyunkwan University) ;
  • Sin, In-Hwan (Department of Mechanical Engineering, Sungkyunkwan University) ;
  • Seok, Chang-Sung (Department of Mechanical Engineering, Sungkyunkwan University)
  • 허용 (성균관대학교 기계공학과) ;
  • 박수 (성균관대학교 기계공학과) ;
  • 신인환 (성균관대학교 기계공학과) ;
  • 석창성 (성균관대학교 기계공학과)
  • Published : 2010.01.01

Abstract

The fracture toughness for the LBB analysis of piping is generally determined by the J-integral according to ASTM E1820. However, since this evaluates a base metal, the fracture toughness for narrow gap welding can be differently than the real value. This study evaluated the plastic  factor of the narrow gap welding part of a nuclear piping with SA508 Cl.1a and SA312 TP316. Also, it performed the fracture toughness test for the narrow gap welding part and applied the new plastic $\eta$ factor equation by Huh, et al. and then compared the results with those according with the ASTM standard.

References

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