A DAMAGE MODEL OF LIFE PREDICTION UNDERCREEPFATIGUE INTERACTION
A DAMAGE MODEL OF LIFE PREDICTION UNDER CREEP-FATIGUE INTERACTION

Based on the fundamental definition of damage and inelastic strain energy hypothesis, this paper presents an inelastic strain energy damage model under creepfatigue interaction condition, with the damage constitutional equations and life prediction formulae respectively described by strain and stress. Creepfatigue tests with notchedbar specimens were carried out at 550. The actual creepfatigue lives are in good agreement to the predicted lives according to inelastic strain energy damage model.