促進暴露を受けるCFRP材の耐侯性曲げ強度とその非破壊的予測 [in Japanese] Weatherability of Flexural Strength of CFRP Subjected to Accelerated Exposure and Non-Destructive Estimation [in Japanese]
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CFRP specimens have been tested under accelerated exposure experiments. The specimens were made of epoxy resin and unidirectional carbon fiber prepreg to the fiber orientation angles of 0, 45 and 90 degrees. In order to clarify the dependence of the exposure period on the weatherability strength, the accelerated exposure of complex testing is continued through 20 cycles and the relation of thier flexural strengths and moduli, etc. to the number of cycle are examined. The variations of flexural strengths, flexural moduli, matrix volume fractions, hardnesses, hydrolytic decomposition of polymer chains and absorbance peak of infrared spectrums with the exposure period are reported in this paper. Furthermore, the non-destructive estimation for weatherability of flexural strengths have reached the estimated values by making full use of the flexural modulus and cycle number data. It has been confirmed that the estimated results are in good agreement with the experimental ones of accelerated exposure for CFRP.
- Journal of the Japan Society for Composite Materials
Journal of the Japan Society for Composite Materials 25(1), 23-29, 1999-01-15
JAPAN SOCIETY FOR COMPOSITE MATERIALS