Standard Article

Fatigue Strength Distribution of Carbon Fiber

  1. Yuanxin Zhou

Published Online: 20 JUL 2012

DOI: 10.1002/9781118097298.weoc082

Wiley Encyclopedia of Composites

Wiley Encyclopedia of Composites

How to Cite

Zhou, Y. 2012. Fatigue Strength Distribution of Carbon Fiber. Wiley Encyclopedia of Composites. 1–7.

Author Information

  1. Tuskegee University's Center for Advanced Materials (T-CAM), Tuskegee, AL

Publication History

  1. Published Online: 20 JUL 2012

Abstract

In this investigation, an experimental approach was developed to characterize the fatigue strength distribution of carbon fibers using fiber bundles test. In this method, survival probability, P, of the fiber bundles was first calculated from the stress reductions at different cycles in strain-controlled fatigue tests. On the basis of a fiber bundles model and fatigue P-strain-N curves, the fatigue strength exponent, b, Weibull scale parameter σ0, and Weibull shape parameter β were then determined to characterize the fatigue strength distribution of carbon fiber. A numerical model, based on Monte Carlo simulation, was also established to predict the load-controlled fatigue failure process of fiber bundles. The simulated strain–cycle number curves and S–N curves based on the model developed are in good agreement with the test data.

Keywords:

  • carbon fiber;
  • fatigue strength;
  • statistical analysis;
  • fiber bundles test;
  • fiber-reinforced composite