Diffusion studies on advanced fibre hybrid composites

Gopalan, R and Rao, RMVGK and Murthy, MVV and Dattaguru, B (1986) Diffusion studies on advanced fibre hybrid composites. Journal of Reinforced Plastics and Composites, 5 (1). pp. 51-61. ISSN 0731-6844

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The moisture diffusion characteristics of simple (E-glass, Graphite and Kevlar) and hybrid (E-Glass-Graphite, Graphite-Kevlar and Kevlar-E-Glass) unidirectional composites have been studied at 296 K and 343 K under water immersion conditions. The equilibrium moisture content (M//m) and diffusion coefficient (D//x) of Kevlar fibre composites are respectively as high as 5 and 10 times those of E-glass/Graphite fibre composites. The hybridization of impermeable fibres (E-Glass and Graphite) in a composite does not cause significant changes in the M//m and D//x values of their simple composites. Hybridization of impermeable fibres with permeable fibres (Kevlar), however, has a significant effect on the diffusion characteristics of their simple composites. The experimental data for simple and hybrid composites comprising both impermeable and/or permeable fibre composites show good correlations with the analytical Fickian Diffusion plot.

Item Type: Article
Uncontrolled Keywords: Composite materials-Moisture;Diffusion-Mathematical Models;Moisture-Diffusion;Analytical models;Fickian difjfusion;Hybrid composites;Unidirectional composites;Plastics;Reinforced
Subjects: CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Ms. Alphones Mary
Date Deposited: 22 Feb 2006
Last Modified: 24 May 2010 04:08
URI: http://nal-ir.nal.res.in/id/eprint/468

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