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J. Ocean Eng. Technol. 1998;12(3):60-67.    

Evaluation of J-R Curve and Tmat of SA 508C-3 Steel at Elevated Temperature
Lim, Man-Bae;Cha, Gee-Jun;
SA 508C-3강의 고온에서 J-R Curve 및 Tmat의 평가
임만배;차귀준;
동아대학교 생산기술연구소;동명대학 가스냉동과;
© 1998 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Keywords: J-R Curve, Tearing Modulus, Unstable Crack, Growth, Crack Tip Open Displacement, Material Tearing Modulus
핵심용어: J-저항곡선, 찢어짐계수, 불안정 균열성장, 균열선단 개구변위, 재료의 찢어짐계수
Abstract
In this study, the J-Resistance Curve and material tearing modulus of SA508-C3 steel, which is one of the used nuclear pressure vessel steel, are measured ar room temperature, $200^{circ}C$ and $300^{circ}C$ according to load ratio analysis and ASTM E813, ASTM E1152, respectively. It is observed that J-R curve and Tmat value decrease as the temperature level increase. Applicability of $T_j$ proposed by Paris et al as instability parameter for ductile material is investigated. It is concluded that results are the $T_j$ parameter may be used as a crack instability parameter.


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