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A MULTIAXIAL FATIGUE STRAIN ENERGY DENSITY PARAMETER RELATED TO THE CRITICAL FRACTURE PLANE
Authors:G Glinka    G Shen  A Plumtree
Affiliation:University of Waterloo, Department of Mechanical Engineering, Waterloo, Ontario N2L 3G1, Canada
Abstract:The cyclic strain energy density parameter W for the critical or failure plane has been successfully applied in predicting the multiaxial fatigue life of an iron-base and a nickel-base alloy. This parameter has the advantage of being independent of loading condition, allowing a universal energy-life curve to be determined for a variety of torsion, tension and bending stress and strain states. The critical strain energy density parameter has been verified using experimental data obtained from tubular and notched specimens of SAE-1045 steel and Inconel 718.
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