Tracking the Moisture Expansion of Carbon/Epoxy Composite Exposed to Varying Humidity-Reference-Cited by-同舟云学术

Tracking the Moisture Expansion of Carbon/Epoxy Composite Exposed to Varying Humidity

Published:2008-01-10 Issue:5 Volume:42 Page:431-446
ISSN:0021-9983
Container-title:Journal of Composite Materials
language:en
Short-container-title:Journal of Composite Materials

Author:

Chang Ting-Wei¹,Tsai Cho-Liang²,Yeih Weichung³,Chang Jiang-Jhy³

Affiliation:

1. Graduate School of Eng. Sci. & Tech., Nat'l Yunlin U. of Sci. & Tech., 123 Sec. University Rd., Touliu, Yunlin 640, Taiwan

2. Dept. of Construction Eng., Nat'l Yunlin U. of Sci. & Tech., 123 Sec. University Rd., Touliu, Yunlin 640, Taiwan,

3. Dept. of Harbor and River Eng., Nat'l Taiwan Ocean U., 2 Pei-Ning Rd. Keelung 202, Taiwan

Abstract

The moisture expansion of composites exposed to humid air was investigated. Tests for moisture expansion were performed on carbon/epoxy laminates exposed to humid air of different relative humidity levels and temperatures. The expansion strain data were employed to derive the material's diffusivity and the saturated expansion strain. The result indicated that the saturated expansion strain is about proportional to the level of humidity and inversely proportional to absolute temperature. An algorithm was then employed to track moisture expansion of a laminate in air with varying humidity level based on the diffusivity and the saturated expansion strain. The theoretical predictions were confirmed experimentally.

Publisher

SAGE Publications

Subject

Materials Chemistry,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites

Link

http://journals.sagepub.com/doi/pdf/10.1177/0021998307086207

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