Thermal properties and performance of carbon fiber-based ultra-high temperature ceramic matrix composites (Cf-UHTCMCs)

Research output: Contribution to journalArticlepeer-review

Authors

  • Sylvain Cousinet
  • Giles LePage
  • Terry Ackerman
  • Azad Hussain
  • Peter Brown
  • Isabelle Dautremonte

Colleges, School and Institutes

External organisations

  • National Composites Centre
  • Wendt India Ltd
  • MBDA France
  • MBDA UK Limited
  • University of Hertfordshire
  • DEFENCE SCIENCE AND TECHNOLOGY LABORATORY
  • DGA

Abstract

The thermophysical properties of carbon fiber-based ultra-high temperature ceramic matrix composites have been determined to aid designers who need these properties when considering using the composites in ultra-high temperature aerospace applications. The coefficient of thermal expansion (CTE) and thermal diffusivity of the composites were measured parallel and perpendicular to the ply direction; the thermal conductivity was measured using the laser-flash method and the heat capacity calculated from the relationship between the thermal diffusivity, density, and thermal conductivity. Both the CTE and thermal conductivity showed higher values across the ply and increased with increasing temperature as expected, whilst the thermal diffusivity showed higher values parallel to the ply and increased smoothly with temperature. In addition, two different but related oxyfuel torch tests, based on oxyacetylene and oxypropane, were used to evaluate the thermo-ablation behavior of the composites. The tests showed how good the composites were at withstanding the ultra-high temperatures, high heat fluxes, and gas velocities involved.

Bibliographic note

Funding Information: The authors thank the DSTL (UK), DGA (France), and MBDA for providing financial and technical support for this work under the Anglo-French framework MCMITP, contract 4700003222. The authors also acknowledge the support and technical advice provided by Professor Peter Brown, DSTL, and Dr Isabelle Dautremont, DGA, and the contribution made by Ms Lorna Cormack and Dr Laura Larrimbe. Funding Information: The authors thank the DSTL (UK), DGA (France), and MBDA for providing financial and technical support for this work under the Anglo‐French framework MCMITP, contract 4700003222. The authors also acknowledge the support and technical advice provided by Professor Peter Brown, DSTL, and Dr Isabelle Dautremont, DGA, and the contribution made by Ms Lorna Cormack and Dr Laura Larrimbe. Publisher Copyright: © 2020 The American Ceramic Society Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

Details

Original languageEnglish
Pages (from-to)3788-3796
Number of pages9
JournalJournal of the American Ceramic Society
Volume103
Issue number6
Publication statusPublished - 1 Jun 2020

Keywords

  • ceramic matrix composites, oxidation resistance, thermal properties, ultra-high temperature ceramics