Prediction of the Fatigue Life Based on Stiffness Degradation Concept
In order to predict the fatigue life of matrix-dominated polymer composites, a new model based on stiffness degradation concept was proposed. The effect of off-axis was considered by defining a non-dimensional modified stress level, and the expression of fatigue stress limit could be provided in the new model. Based on the fatigue tension-tension experiment of PI/SiO2 hybrid thin films under different stress levels, the simulated results was confirmed to be well agreeable with the experimental data.
Wei Yang, Mamtimin Geni, Tiejun Wang and Zhuo Zhuang
Y.H. Wang et al., "Prediction of the Fatigue Life Based on Stiffness Degradation Concept", Advanced Materials Research, Vols. 33-37, pp. 199-204, 2008