Journal of Materials Science

, Volume 30, Issue 24, pp 6329–6338 | Cite as

High-temperature mechanical behaviour of multidirectional Nicalon/CAS-II composite

  • R. Kahraman
  • J. F. Mandell
  • M. C. Deibert
Article
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Accepted:

Abstract

High-temperature mechanical behaviour of Nicalon/CAS-II composite has been investigated. Oxidation of the exposed interfaces along matrix cracks at 1000 °C lowered the longitudinal unidirectional strength to the stress level at which matrix cracking began to occur. The strength of cross-plied composites was also severely reduced in 800 °C air. Transverse plies cracked prior to 0° ply matrix cracking. However, embrittlement did not occur until the matrix in the 0° plies cracked. It was established that oxidation does not take part in crack growth parallel to the fibres, except adjacent to exposed edges. Neither does oxygen enter 90° ply cracks in cross-plied composites in sufficient quantity to produce oxidation embrittlement, at least up to the 0° matrix cracking strain.

Keywords

Oxidation Oxygen Polymer Stress Level Mechanical Behaviour 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • R. Kahraman
    • 1
  • J. F. Mandell
    • 2
  • M. C. Deibert
    • 2
  1. 1.Department of Chemical EngineeringKing Fahd University of Petroleum and MineralsDhahranSaudi Arabia
  2. 2.Department of Chemical EngineeringMontana State UniversityBozemanUSA

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