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Leak-Before-Break Behavior and Crack Opening Displacement in Piping Under Bending Load

굽힘하중을 받는 배관의 파단전누설거동 및 균열개구변위

  • Nam, Ki-Woo (Dept. of Materials Science and Engineering, Pukyong Nat'l Univ.)
  • 남기우 (부경대학교 신소재공학부)
  • Received : 2009.12.21
  • Accepted : 2010.03.26
  • Published : 2010.06.01

Abstract

The leak-before-break behavior and the crack opening displacement were investigated of statically indeterminate piping system and statically determinate piping system after a crack penetration. The reduction in the ultimate strength caused by a crack was relatively small in the statically indeterminate piping system. The leak-before-break in the statically indeterminate piping system had a larger safety margin than that in the statically determinate piping system. The crack opening displacement after crack penetration in a pipe with a nonpenetrating crack was evaluated by using a plastic rotation angle.

Keywords

LBB Behavior;Bending Load;Crack Opening Displacement;Pipe;Crack Penetration

References

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