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

The Korean Society of Mechanical Engineers (대한기계학회)
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Development of Failure Pressure Evaluation Model for Internally Well Thinned Piping Components

내부 감육 배관의 손상압력 평가 모델 개발

  • 나만균 (조선대학교 원자력공학과) ;
  • 박치용 (한전 전력연구원 원자력연구실) ;
  • 김진원 (조선대학교 원자력공학과)
  • Published : 2005.07.01
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Abstract

The purpose of this study is to develop failure pressure evaluation models, which are applicable to straight pipes and elbows containing an internally wall thinning defect induced by flow-accelerated-corrosion (FAC). In this study, thus, three dimensional finite element (FE) analyses are performed to investigate the dependences of failure pressure of internally wall thinned pipe on the defect shape, the pipe geometry, and the defect location and bend radius of elbow. Also, the existing failure pressure assessment models for externally wall thinned pipes are examined. Based on these, the new models for assessing failure pressure of piping components with an internally wall thinning defect are proposed. Comparison of failure pressure, predicted by proposed models, with FE analysis result shows good agreement regardless of pipe type, defect shape, and defect location and bend radius.

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References

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  1. Experimental Evaluation of the Bending Load Effect on the Failure Pressure of Wall-Thinned Elbows vol.131, pp.3, 2009, https://doi.org/10.1115/1.3122032