Abstract
AbstractA theoretical fatigue acceleration method for polymer composite materials is proposed in this paper, based on continuum damage mechanics and time-temperature superposition. By way of demonstration, it has been applied to problems involving constant strain rates and fatigue loading conditions. The damage evolution law for the matrix of composites was constructed using the Weibull distribution of defects which will develop into cracks as a result of deformation. In conjunction with the Wiechert model, the theoretical framework formulated here is capable of capturing the mechanical behaviour of UD composites. Demonstration and initial verification of this acceleration method were carried out through experiments.KeywordsPolymer compositesFatigueTest accelerationContinuum damage mechanicsTime-temperature superposition
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