Open Access

ABSTRACT

Generalized Fatigue Model For Ploymer Matrix Composites

by Mijia Yang¹, Qiao Pizhong²

1 Department of Civil and Environmental Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, USA
2 Department of Civil and Environmental Engineering, Washington State University, Pullma, WA, 9164-2910, USA

The International Conference on Computational & Experimental Engineering and Sciences 2008, 6(3), 157-168. https://doi.org/10.3970/icces.2008.006.157

Abstract

A new fatigue model suitable for polymer matrix composites is proposed, based on dimensional analysis of testing and material variables involved in a fatigue test. The new model has a good physical and theoretical foundation based on progressive damage, and unifies all the material and testing parameters into one general equation. Especially, the model can be simplified to the Goodman relation or Gerber relation when capturing the effect of mean stresses. The model suggested can be used to substitute the classical S-N curves and reduce the testing number by 50{\%} required by ASTM standards. A series of experiments have also been conducted to validate the model using E-Glass polyurethane materials along with literature results.

---