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

The Korean Society of Mechanical Engineers (대한기계학회)
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Failure Pressure Evaluation of Local Wall-Thinned Elbows by Real-scale Burst Tests

실배관 파열실험을 통한 국부감육 곡관 손상압력 평가

  • 김진원 (조선대학교 원자력공학과) ;
  • 박치용 (한전전력연구원 원전기계그룹) ;
  • 이성호 (한전전력연구원 원전기계그룹)
  • Published : 2007.10.01
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Abstract

This study performed a series of burst tests at ambient temperature using real-scale elbow specimen containing a local wall-thinning defect at it's intrados or extrados and evaluated failure pressure of locally wall-thinned elbows. In the experiment, a 90-degree 100A, Sch. 80 standard elbow was employed, and various wall-thinning geometries, such as length, depth, and circumferential angle, were considered. From the results of experiment, the dependences of failure pressure of wall-thinned elbows on the defect geometries and locations were investigated. In addition, the reliability of existing models was examined by comparing the tests data with the results predicted from existing failure pressure evaluation models for locally wall-thinned elbow.

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References

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