Abstract
Continuum Damage Mechanics (CDM) provides a methodology for assessing the remanent creep life of engineering components. CDM can be used either as a computer-based design method or as a diagnostic tool for calcualting remanent life. To discriminate between differences in the responses of materials to service conditions, the damage evolution and creep constitutive equations in CDM need to be based on the physical mechanisms responsible for the damage processes. The appropriate physical mechanism can be diagnosed by measuring certain parameters from the shape of the uniaxial tensile creep curve and applying a set of simple rules, and the results can be used to formulate constitutive equations for multiaxial stress states.
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