Abstract
The possibility of using the model based on Daniels’ sequence and Markov chain theory for approximation of S-N fatigue curve of composite material is studied. The model allows to see the connection between static strength distribution parameters and parameter of S-N fatigue curve. Although the model is too simple and does not provide numerical coincidence with experimental fatigue test data but it can explain existence of fatigue limit and it can be used as nonlinear regression model of S-N fatigue curve with and without fatigue limit. By the use of this model we can predict fatigue curve changes as consequence of static strength parameter changes. Numerical example is given.
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