에너지공학 (Journal of Energy Engineering)

  • 제24권4호
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  • Pages.55-62
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  • 2015
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  • 1598-7981(pISSN)
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  • 2713-7074(eISSN)
한국에너지학회 (The Korean Society for Energy)
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Effects of Defect Size on Crush Test Load of Butt Fusion Welded MDPE Pipes

  • Tun, Nwe Ni (Department of Mechanical Engineering, Chung Ang University) ;
  • Lai, Huan Sheng (Department of Mechanical Engineering, Chung Ang University) ;
  • Jeon, Gyu Min (Department of Mechanical Engineering, Chung Ang University) ;
  • Yoon, Kee Bong (Department of Mechanical Engineering, Chung Ang University) ;
  • Kil, Seong Hee (Korea Gas Safety Corportation)
  • 투고 : 2015.11.08
  • 심사 : 2015.12.10
  • 발행 : 2015.12.31
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초록

It is expected that the size of welding defect affects the mechanical performance of welded medium density polyethylene (MDPE) pipe joints. In this study, butt fusion welded MDPE pipe joints with a single spherical or planar defect of various sizes were studied using experimental crush testing and also by finite element method. The crush test showed that the mechanical performance of crush was not affected by the size and geometry of a single welding defect when the defect size was increased to 45% of the pipe's wall thickness. The simulation results indicated that the effect of the single welding defect on the Von Mises stress distribution near the defect explained the reason of the test results.

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참고문헌

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