A Study on Evaluation of J<TEX>$_{IC}$</TEX> for SB41 Steel with Measured Bluntion Line

J. Ocean Eng. Technol. 1994;8(2):38-46.

A Study on Evaluation of J$_{IC}$ for SB41 Steel with Measured Bluntion Line

실측 둔화직선을 이용한 SB41 강의 J$_{IC}$평가에 관한 연구

허정원,오세욱,유재환,김득진,차재준

동아대학교 생산기술연구소,동아대학교 기계공학과,세명대학교 안전과,동아대하교,동명전문대 가스냉동과

Keywords: elastic-plastic fracture toughness, blunting line real-measured, smooth compact tension specimen, side-grooved specimen

핵심용어: 탄소성 파괴인성, 실측 둔화직선, 평활 CT 시험편, 측면홈 CT 시험편

Abstract

The method of JSME S001-83 and ASTM E813-87 have been adapted for evaluation of the elastic-plastic fracture toughness J sub(IC) of SB41 steel. This SB41 steel have the characteristics of low-stength CT specimens. The test results obtained have been considered and compared on the basis of resulted data from two kinds of methods(JSME S001-83, ASTM E813-87) and two kinds of specimen configurations(smooth, side-grooved). On the basis of results from consideration and comparison, the difficulties for its application were presented in case when the standard ASTM E813-87 method was employed for the measurement of J sub(IC) in SB41 steel. A modified method was applied for measuring J sub(IC) in SB41 steel that it used the blunting line real-measured by experiment instead of the standard blunting line theoretically determined, and the result from that procedure was analyzed and the usefulness of that method was examined and considered.