Abstract
CFRP specimens have been exposed under accelerated exposure apparatus. The specimens are made of epoxy resin and the unidirectional carbon fiber prepreg having the fiber orientation angles of 0.45 and 90 degree, respectively. In order to clarify the dependence of the exposure period on the weatherability strength, the complicated accelerated exposure test is continued to 20 cycles. The variations of flexural strengths, flexural moduli, matrix volume fractions and thicknesses to the exposure period are reported in this paper. Furthermore, the experimental results of flexural strength and modulus for CFRP are compared with their estimated values calculated from the results of accelerated exposure of epoxy resin.
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