Effect of Moisture Absorption on the Bending Strength of Carbon/Epoxy Composites with Voids
The effects of voids on the bending strength of T300/914 laminates that exposed to room temperature, hygrothermal and drying environment was discussed in this paper. The experimental results revealed that the saturated moisture content and the rate of water uptake increased with porosity increasing from 0.71% to 1.50%, which proved that voids facilitate moisture absorption. The bending strength of the unaged, aged and dried specimens were characterized and analyzed. The results revealed that the bending strength of the aged specimens decreased with the increasing void contents and immersion time. Compared to the unaged specimens, the bending strength of the aged specimens decreased 13.33% and 18.78% with porosity of 0.71% and 1.50%, respectively. The bending strength of the dried specimens was higher than that of the aged specimens and lower than that of the unaged specimens in the case of similar porosity.
A. Y. Zhang et al., "Effect of Moisture Absorption on the Bending Strength of Carbon/Epoxy Composites with Voids", Advanced Materials Research, Vols. 311-313, pp. 165-168, 2011