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Hybridization of carbon-glass epoxy composites: An approach to achieve low coefficient of thermal expansion at cryogenic temperatures

Praveen, RS and Jacob, Subhash and Murthy, CRL and Balachandran, P and Rao, YVKS (2011) Hybridization of carbon-glass epoxy composites: An approach to achieve low coefficient of thermal expansion at cryogenic temperatures. In: Cryogenics, 51 (2). pp. 95-104.

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Official URL: http://dx.doi.org/10.1016/j.cryogenics.2010.12.003

Abstract

The paper is based on a study to develop carbon-glass epoxy hybrid composites with desirable thermal properties for applications at cryogenic temperatures. It analyzes the coefficient of thermal expansion of carbon-epoxy and glass-epoxy composite materials and compares it with the properties of carbon-glass epoxy hybrid composites in the temperature range 300 K to 125K. Urethane modified epoxy matrix system is used to make the composite specimens suitable for use even for temperatures as low as 20K. It is noted that the lay-up with 80% of carbon fibers in the total volume fraction of fibers oriented at 30 degrees and 20% of glass fibers oriented at 0 degrees yields near to zero coefficient of thermal expansion as the temperature is lowered from ambient to 125 K. (c) 2010 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Hybrid composites; Carbon-glass epoxy; Low temperature; Coefficient of thermal expansion
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Division of Physical & Mathematical Sciences > Centre for Cryogenic Technology
Date Deposited: 23 Mar 2011 09:13
Last Modified: 23 Mar 2011 09:13
URI: http://eprints.iisc.ernet.in/id/eprint/36215

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