대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)

  • 제26권4호
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  • Pages.731-738
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  • 2002
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  • 1226-4873(pISSN)
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  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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배관실험을 통한 국부감육 배관의 손상거동 평가

An Evaluation of Failure Behavior of Pipe with Local Wall Thinning by Pipe Experiment

  • 김진원 (조선대학교 원자력공학과) ;
  • 박치용 (한전 전력연구원 원자력연구실)
  • Kim, Jin-Won (Dept.of Nuclear Engineering, Chosun University) ;
  • Park, Chi-Yong (Atomic Energy Research Center, Korea Electric Power Research Institute)
  • 발행 : 2002.04.01
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초록

To understand failure behavior of pipe thinned by flow accelerated corrosion, in this study, the pipe failure tests were performed on 102mm-Sch.80 carbon steel pipe with various local wall thinning shapes, and the failure mode, load carrying capacity, and deformability were investigated. The tests were conducted under loading conditions of 4-points bending and internal pressure. The experimental results showed that the failure mode of thinned pipe depended on magnitude of internal pressure and thinning length as well as loading direction and thinning depth and angle. The variation in load carrying capacity and deformability of thinned pipe with thinning length was determined by stress type appled to the thinning area and circumferential thinning angle. Also, the effect of internal pressure on failure behavior was dependent on failure mode of thinned pipe, and it promoted crack occurrence and mitigated local buckling at thinned area.

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참고문헌

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