Transactions of the Korean Society of Pressure Vessels and Piping (한국압력기기공학회 논문집)

Korean Society of Pressure Vessels and Piping (한국압력기기공학회)
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Investigation of Bending Fatigue Behaviors of Thermal Butt Fusion in Safety Class III High-Density Polyethylene Buried Piping in Nuclear Power Plants

원전 안전 3등급 고밀도 폴리에틸렌 매설 배관 맞대기 열 융착부의 굽힘 피로특성 평가

  • Received : 2015.11.30
  • Accepted : 2015.11.04
  • Published : 2015.12.30
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Abstract

The fatigue behavior of thermal butt fusion in safety class III high-density polyethylene (HDPE) buried piping for nuclear power plants was investigated using load-controlled bending fatigue on four-point bend test specimens. Based on the results, the presence of thermal butt fusion beads was confirmed to reduce the fatigue lifetime in the low- and medium-cycle fatigue regions while having a negligible effect in the high-cycle fatigue regions.

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References

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