NIST Time|NIST Home|About NIST|Contact NIST

HomeAll Years:AuthorKeywordTitle2005-2010:AuthorKeywordTitle

Fatigue Model for Fiber-Reinforced Polymeric Composites.


pdf icon Fatigue Model for Fiber-Reinforced Polymeric Composites. (1013 K)
Tang, H. C.; Nguyen, T.; Chuang, T. J.; Chin, J. W.; Lesko, J.; Wu, H. F.

Journal of Materials in Civil Engineering, Vol. 12, No. 2, 97-104, May 2000.

Keywords:

composite materials; civil engineering; fatigue (materials); mechanical properties

Abstract:

A fatigue model based on cummulative damage is developed for predicting the fatigue life of fiber-reinforced polymeric composites in offshore applications. This model incorporates applied maximum stress, stress amplitude, loading frequency, residual tensile modulus, and material constants as parameters. The model is verified with experimental fatigue data of a glass fiber/vinyl ester composite in various environments. While the specimens are exposed to air, fresh water, and sea water at 30 deg C, they are subjected to tension/tension stress at four levels of applied maximum tensile stress in each of two frequencies. Both the residual mechanical properties at specified loading cycles and the number of cycles at which the specimens fail are measured. These data are used to determine the model constants.