Journal of Materials Science

, Volume 45, Issue 2, pp 326–333 | Cite as

A semi-empirical unified model of strain fatigue life for insulation plastics

  • Xiaofan Wei
  • Shing-Chung WongEmail author
  • Sunil Bandaru


The paper focuses on modeling the strain fatigue lives of three commonly used cable insulation polymers, namely (1) polyvinyl chloride, (2) crosslinked polyethylene, and (3) polyphenylene ether under selected strain and temperature ranges. On the basis of results obtained from their fatigue tests, Coffin–Manson model, mean/maximum strain fatigue model, and a set of new semi-empirical equations were applied to establish the relationship between fatigue lives and strains. The unified strain model, herein we name it the Wei–Wong model, is developed to predict the fatigue lives of three polymers studied and their prediction capability was examined using our experimental data. It was found that the proposed Wei–Wong model can provide a better life prediction compared to the experimental data and other methods in the literature at selected temperatures, namely −40, 25, and 65 °C.


Fatigue Fatigue Life Strain Amplitude Strain Model Fatigue Life Prediction 



The authors wish to thank Pei Chen and Paul Lam for assisting in the preparation of this manuscript.


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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringThe University of AkronAkronUSA

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