Chapter 62. In-Situ Determination of Constituent Properties and Performance in an Oxide-Oxide CFCC

  1. Ersan Ustundag and
  2. Gary Fischman
  1. Christian X. Campbell1 and
  2. Michael G. Jenkins2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294567.ch62

23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures : A: Ceramic Engineering and Science Proceedings, Volume 20, Issue 3

23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures : A: Ceramic Engineering and Science Proceedings, Volume 20, Issue 3

How to Cite

Campbell, C. X. and Jenkins, M. G. (2008) In-Situ Determination of Constituent Properties and Performance in an Oxide-Oxide CFCC, in 23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures : A: Ceramic Engineering and Science Proceedings, Volume 20, Issue 3 (eds E. Ustundag and G. Fischman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294567.ch62

Author Information

  1. 1

    Siemons-Westinghouse Power Generation Orlando, FL 32826

  2. 2

    Department of Mechanical Engineering University of Washington Seattle, WA 98195–2600

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1999

ISBN Information

Print ISBN: 9780470375631

Online ISBN: 9780470294567

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Keywords:

  • evaluations;
  • ceramic;
  • reliability;
  • monotonic;
  • tensile

Summary

Oxide fibre-reinforced / oxide matrix CFCCs have the potential of resisting high-temperature degradation in the increasingly aggressive environments of the emerging applications of this still-evolving class of materials. However, a major design and processing limitation CFCCs is lack of information on the in-situ properties and performance of the composites constituents (i.e., fibres, interphase, matrix). Phenomenological and analytical evaluations of unload/reload tensile test results (i.e., hysteretic stress-strain response) were used to extract information on residual stress state, interfacial shear stress, and other constituent behaviour in an Al2O3 (Nextel™) fibre-reinforced / Al2O3 (DIMOX™) matrix composite with an oxidation-resistant BN/SiC interphase. Both monotonic and unload/reload tensile tests at room temperature were conducted on test specimens that had been exposed to 600, 800, 1000 and 1200°C temperatures in ambient air for 10 and 100 h. Other tests (e.g., impulse resonance; TGA/DTA; and fractography) substantiated micromechanics of the observed tensile behavior.