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    Nonlinear Work-Hardening Crack-Tip Fields by Dislocation Modeling

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    The dislocation model is extended to include nonlinear hardening of the cracktip fields. The resulting model is applied to the loaded and unloaded crack. Several factors affecting the cyclic J-integral are discussed, including mean stress, Baushinger effects, and the applied far-field strain energy density.


    dislocation, cyclic , J, -integral, nonlinear hardening, unloading, Bauschinger effects, mean stress, nonlinear fracture mechanics, fracture mechanics

    Author Information:

    Ellyin, F
    Professor, University of Alberta, Edmonton, Alberta

    Fakinlede, OA
    Assistant professor, University of Ilorin, Ilorin, Kwara State

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP27705S