Measuring and modeling the thermal conductivities of three-dimensionally woven fabric composites |
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Authors: | J Schuster D Heider K Sharp M Glowania |
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Institution: | (1) University of Applied Sciences, Kaiserslautern, Carl-Schurz St. 10-16, 66953 Pirmasens, Germany;(2) University of Delaware, Center for Composite Materials, Newark, DE, 19716, USA;(3) 3TEX, 109 MacKenan Drive, Cary, NC, 27511, USA;(4) RWTH Aachen, Institut für Textiltechnik, Eilfschornsteinstr. 18, 52062 Aachen, Germany |
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Abstract: | The effect of a three-dimensional fiber reinforcement on the out-of-plane thermal conductivity of composite materials is investigated.
Composite preforms with different fibers in the thickness direction were fabricated. After in fusion by using a vacuum-assisted
resin transfer molding process, their through-thickness thermal conductivities were evaluated. The measured thermal conductivities
showed a significant increase compared with those of a typical laminated composite. Although the through-thickness thermal
conductivity of the samples increased with through-thickness fiber volume fraction, its values did not match those predicted
by the simple rule of mixtures. By using finite-element models to better under stand the behavior of the composite material,
improvements in an existing analytical model were performed to predict the effective thermal conductivity as a function of
material properties and in-contact thermal properties of the composite.
Russian translation published in Mekhanika Kompozitnykh Materialov, Vol. 45, No. 2, pp. 241–254, March–April, 2009. |
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Keywords: | textile composites thermal properties modeling finite-element analysis |
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