Remaining Life Evaluation for Remanufacturing Blanks Based on Non-linear Continuum Fatigue Damage Model

Abstract

AbstractChaboche's model of nonlinear continuum fatigue damage is modified based on the impact of crack closure effect on fatigue damage. A cumulative fatigue damage model is developed accordingly to predict the remaining life for condemned products to be remanufactured. The related parameters are concluded from fully reversed fatigue experiment. To verify the proposed model, tension-compression fatigue tests under two levels of load spectrum(high-low loading and low-high loading) are carried out. The results showed that the calculated value and experimental value are in good agreement. It has been proved to be an efficient method to predict the remaining life involved in remanufacturing technology.