Time and temperature dependence on the flexural fatigue strength in the transverse direction of unidirectional CFRP

Masakazu Nakada; M. Maeda; T. Hirohata; M. Morita; Y. Miyano

doi:10.1117/12.269866

20 March 1997 Time and temperature dependence on the flexural fatigue strength in the transverse direction of unidirectional CFRP

Masakazu Nakada, M. Maeda, T. Hirohata, M. Morita, Y. Miyano

Author Affiliations +

Proceedings Volume 2921, International Conference on Experimental Mechanics: Advances and Applications; (1997) https://doi.org/10.1117/12.269866
Event: International Conference on Experimental Mechanics: Advances and Applications, 1996, Singapore, Singapore

Abstract

A prediction method of fatigue strength of polymer composites for an arbitrary frequency, stress ratio and temperature was proposed. The method is based upon the four hypotheses, (A) same failure mechanism for static, creep and fatigue failure, (b) same time-temperature superposition principle for all failure strengths, (C) linear cumulative damage law for monotone loading and (D) linear dependence of fatigue strength upon stress ratio. Flexural static, creep and fatigue tests at various temperatures were conducted in the transverse direction of two kinds of unidirectional CFRP laminates, which are T300/2500 and T300/PEEK. The validity of the prediction method and the applicability of the hypotheses for the flexural fatigue strength in the transverse direction of unidirectional CFRP laminates were discussed.

Citation Download Citation

Masakazu Nakada, M. Maeda, T. Hirohata, M. Morita, and Y. Miyano "Time and temperature dependence on the flexural fatigue strength in the transverse direction of unidirectional CFRP", Proc. SPIE 2921, International Conference on Experimental Mechanics: Advances and Applications, (20 March 1997); https://doi.org/10.1117/12.269866

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