Published: Jan 1988
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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
Professor, University of Alberta, Edmonton, Alberta
Assistant professor, University of Ilorin, Ilorin, Kwara State