Prediction of Fracture Resistance Curves for Nuclear Piping Materials(III)

원자력 배관재료의 파괴저항곡선 예측

  • Chang, Yoon-Suk (Power Technology Development Research Center, Korea Power Engineering Corporation) ;
  • Seok, Chang-Sung (Dept.of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim, Young-Jin (Dept.of Mechanical Engineering, Sungkyunkwan University)
  • 장윤석 (한국전력기술(주) 전력기술개발연구소) ;
  • 석창성 (성균관대학교 기계공학부) ;
  • 김영진 (성균관대학교 기계공학부)
  • Published : 1997.11.01


In order to perform leak-before-break design of nuclear piping systems and integrity evaluation of reactor vessels, full stress-strain curves and fracture resistance(J-R) curves are required. However it is time-consuming and expensive to obtain J-R curves experimentally. To resolve these problems, three different methods for predicting J-R curves from tensile data were proposed by the authors previously. The objective of this paper is to develop a computer program based on those J-R curve prediction methods. The program consists of two major parts ; the main program part for the J-R curve prediction and the database part. Several case studies were performed to verify the program, and it was shown that the predicted results were, in general, in good agreement with the experimental ones.


J-R Curve Prediction(JRCP);Fracture Strain;Finite Element Method