The entropy production is a non-negative quantity based on irreversible thermodynamics andthus can serve as a basis for the systematic description of the irreversible processes occurring in a solid. In thispaper, a thermodynamic framework has been presented for damage mechanics of solids materials, where entropyproduction is used as the sole measure of damage in the system. As a result, there is no need for physically meaninglessempirical parameters to define a phenomenological damage potential surface or a Weibull function totrace damage evolution in solid continuum. In order to validate the model, predictions are compared with experimentalresults, which indicates that entropy production can be used as a damage evolution metric. The theoryis founded on the basic premise that a solid continuum obeys the first and the second laws of thermodynamics.
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