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    STP803V2

    Fracture of Circumferentially Cracked Type 304 Stainless Steel Pipes Under Dynamic Loading

    Published: 01 January 1983


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    Abstract

    A program of experimentation and analysis aimed at determining fracture instability in circumferentially cracked Type 304 stainless steel pipes in seismic or water-hammer loadings is described. Experimental work on center-cracked tension panels revealed that dynamic loading does not affect the net-section stress criterion evolved previously for Type 304 stainless steel. Full-scale tests on 100-mm-diameter (4 in.) pipes subjected to a dynamic load nevertheless indicate that a margin of safety exists beyond that predicted by the application of the net-section stress criterion. It is concluded that the finite duration of a dynamic loading together with the system compliance which allows stable crack growth beyond maximum load is primarily responsible. A J-based plastic fracture mechanics assessment based upon rate-dependent mechanical and fracture properties of the material was made and found to be consistent with this hypothesis.

    Keywords:

    fracture, dynamic loading, Type 304 stainless steel, nuclear plant piping, elastic-plastic fracture


    Author Information:

    Wilkowski, GM
    Battelle Columbus Laboratories, Columbus, Ohio

    Ahmad, J
    Battelle Columbus Laboratories, Columbus, Ohio

    Zahoor, A
    Battelle Columbus Laboratories, Columbus, Ohio

    Marschall, CW
    Battelle Columbus Laboratories, Columbus, Ohio

    Broek, D
    Battelle Columbus Laboratories, Columbus, Ohio

    Abou-Sayed, IS
    Battelle Columbus Laboratories, Columbus, Ohio

    Kanninen, MF
    Battelle Columbus Laboratories, Columbus, Ohio


    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP36775S