NEW METHOD OF FRACTURE TOUGHNESS KIC  PREDICTION FOR MATERIAL WITH ARBITRARY STRESS-STRAIN CURVE BY USING CLEAVAGE  FRACTURE LOCAL APPROACH

Abstract

Abstract: A new method of fracture toughness K1C prediction for material with arbitrary stress-strain curve by using cleavage fracture local approach is proposed in this paper. The fracture toughness of civil made steel as A508-Ⅲ 16MnR at different cleavage fracture probability are predicted by using the method. To most of pressure vessel carbon-manganese steels, cleavage fracture is likely to occur at the load corresponding to 62% cle-avage fracture probability. Hence, the fracture toughness corre-sponding to the load is the most possible fracture toughness of steels. The values of fracture toughness corresponding to 62% cleavage fracture probability is close to that of experiment.

Key words: Cleavage fracture, Fracture toughness, Local approach, Prediction

CLC Number:

Hui Hu;Li Peining;Xuan Fuzhen;Liu Changjun;Qu Jiadi. NEW METHOD OF FRACTURE TOUGHNESS KIC PREDICTION FOR MATERIAL WITH ARBITRARY STRESS-STRAIN CURVE BY USING CLEAVAGE FRACTURE LOCAL APPROACH[J]. , 2004, 40(10): 165-169.

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NEW METHOD OF FRACTURE TOUGHNESS KIC PREDICTION FOR MATERIAL WITH ARBITRARY STRESS-STRAIN CURVE BY USING CLEAVAGE FRACTURE LOCAL APPROACH

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