Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Experimental and Analytical Study on the Burst Pressure of Steam Generator Tubes with T-type Combination Cracks

증기발생기 전열관에 존재하는 T-형 복합 균열의 파열압력 시험 및 해석

  • Shin, Kyu-In (Frontier Technology Innovation Center, Chung Ang University) ;
  • Park, Jai-Hak (Department of Safety Engineering, Chungbuk National University) ;
  • Yoon, Kee-Bong (Department of Mechanical Engineering, Chung Ang University)
  • 신규인 (중앙대학교 미래신기술연구소) ;
  • 박재학 (충북대학교 안전공학과) ;
  • 윤기봉 (중앙대학교 기계공학부)
  • Published : 2005.06.01
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Abstract

Several nuclear power plants reported that they often found the combination cracks, which consist of longitudinal and circumferential cracks in the tubes. For the burst pressure of a tube with a single longitudinal or circumferential crack several experimental equations have been proposed in published literatures. But for the combination crack appropriate fracture criterion has not been proposed yet. In this study the burst pressures of a tube with a longitudinal crack or a T-type combination crack consisting of longitudinal and circumferential cracks were obtained experimentally and analytically. Fracture parameters such as crack opening angle (COA) were investigated by using elastic plastic analysis. Also the burst pressure far a T-type combination crack located near a tubesheet was considered to develop a length-based criterion. Because most of the axial, circumferential or combination cracks initiate in roll transition zone near the tubesheet.

Keywords

References

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