Ductile fracture is one of the dominant failure modes to be considered for the evaluation of the structural integrity of the Fast Breeder Reactor (FBR) piping under excessive loading conditions. In this study, fracture experiments by four-point bending were conducted for circumferentially cracked pipes both at room temperature and at high temperature. Tested pipes were relatively thin-walled and were made of austenitic stainless steel since FBR pipes were focused on in the study. Ductile crack growth behavior and load-carrying capacity were compared with those from finite element calculations as well as some simplified estimation schemes. The applicability of the Net-Section collapse criterion and the J-based criterion was also investigated. The existing evaluation methods based on the both criteria were sufficiently able to predict ductile crack growth and/or load-carrying capacity. It was also ascertained that the Net-Section collapse criterion was favorably appropriate when FBR primary pipe configuration was considered.


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    Title :

    Ductile fracture behavior of stainless steel cracked pipes at high temperature


    Contributors:
    Miura, N. (author) / Shimakawa, T. (author)


    Publication date :

    1998


    Size :

    9 Seiten, 9 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English






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