Journal of the Japan Society for Composite Materials
Online ISSN : 1884-8559
Print ISSN : 0385-2563
ISSN-L : 0385-2563
Estimation Method on Flexural Creep Fracture Strength of Satin Woven CFRP Laminates
Y. MIYANOM. KASAMORIT. OHTSUKAY. HATTORI
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1992 Volume 18 Issue 6 Pages 226-230

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Abstract

This paper is concerned with the prediction of flexural creep fracture for CFRP laminates consisting of satin woven carbon fibers and high temperature epoxy matrix, of which glass transition temperature Tg=236°C. The flexural creep fracture tests were practically carried out under various stress level at 50°C to be sufficiently lower than the Tg. On the other hand, the static flexural tests were carried out under various deflection rates and temperatures. The master curve of flexural strength of CFRP was obtained by applying the reciprocation law between time and temperature to these experimental results. Furthermore, the flexural creep fracture of CFRP was estimated by utilizing the linear cumulative damage rule adapted to this master curve. The creep fracture predicted by the method mentioned above is fairly well agreed with that measured by creep tests.

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