Transactions of the Korean Society of Mechanical Engineers (대한기계학회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on the Effect of Temperature on the Elastic-Plastic Fracture Toughness $J_{IC}$ of Materials (I) - A Comparative Study of $J_{IC}$ Test Methods Recommended by ASTM and JSME -

재료의 탄소성 파괴인성치 $J_{IC}$의 온도 의존성에 관한 연구 I - AST과 JSME의 $J_{IC}$ 시험법에 관한 비교연구 -

  • 석창성 (성균관대학교 대학원) ;
  • 최용식 (성균관대학교 공대 기계공학과) ;
  • 양원호 (성균관대학교 공대 기계설계학과) ;
  • 김영진 (성균관대학교 공대 기계설계학과)
  • Published : 1989.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

Elastic-plastic fracture toughness J$_{IC}$ can be used as an effective design criterion in elastic plastic fracture mechanics. In the J$_{IC}$ test methods approved by ASTM and JSME, there are discrepancies such as the definition of J$_{IC}$, the slope of the blunting line, curve fitting method and the measurement of crack extension etc. The objective of this paper is to evaluate the effect of these discrepancies on the determination of J$_{IC}$ values. Fracture toughness tests were performed on A516, SA508 and SCM415 steels, and test results were analyzed according to ASTM E 813-81, ASTM E 813-87 and JSME S 001-1981. Results showed significant differences depending on the analysis methods. Therefore, a conversion equation between two ASTM methods was proposed, and the conversion error was within acceptable range(less then 8.5%)en 8.5%)

본 연구에서는 실험방법과 해석방법 등의 차이가 Ｊ$_{IC}$ 값에 미치는 영향을 고찰하여 보았으며, E 813-81법으로 해석된 Ｊ$_{IC}$ 값으로 환산하는 방법을 제안하고 몇 가지 재료와 환경에서 그 오차를 검토하였다.하였다.

Keywords