Abstract
In this article, a new model was developed to predict the fatigue life and stiffness reduction in thermoplastics filled with two-dimensional nanoparticles. The established model is a combination of micromechanics model and the normalized stiffness degradation approach. It was assumed that under fatigue loading condition, only stiffness of thermoplastic resin was degraded due to the temperature rise and thermal softening phenomena, while the stiffness of the nanofillers remains unchanged. The developed model is capable of predicting the fatigue life of thermoplastic nanocomposites based on the experimental data of the neat thermoplastic resin without nanofillers. The results obtained by the new model are in very good agreement with the experimental data of polyamide-6 pellets and hectorite clay nanocomposites under constant stress amplitudes fatigue loading conditions.
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