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    Static and Dynamic J-R Curve Testing of A533B Steel Using the Key Curve Analysis Technique

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    Elastic-plastic J-R curves were obtained for compact specimens of A533B-02 plate tested at average load point velocities of 2.5 × 10−4 m/min and 0.25 m/s directly from the load displacement record using a key curve analysis technique. The slow velocity results compare well with J-R curves obtained on the identical specimens using an unloading compliance technique. The key curve method is shown to accurately predict the extent of crack extension. The J-R curves obtained from the high speed loading are shown to be elevated with respect to the slow test results in both the initial JIc and the tearing modulus T by from 50 to 100 percent.


    elastic-plastic fracture, J-integral, fracture toughness J-R curves, A533 steel, key curve method, tearing modulus, high rate testing, crack propagation, fractures (materials), fracture mechanics

    Author Information:

    Joyce, JA
    Associate professor, U.S. Naval Academy, Annapolis, Md.

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP37093S