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Thermal expansion of laminated, woven, continuous ceramic fiber/chemical-vapor-infiltrated silicon carbide matrix compositesThermal expansions of three two-dimensional laminate, continuous fiber/chemical-vapor-infiltrated silicon carbide matrix composites reinforced with either FP-Alumina (alumina), Nextel (mullite), or Nicalon (Si-C-O-N) fibers are reported. Experimental thermal expansion coefficients parallel to a primary fiber orientation were comparable to values calculated by the conventional rule-of-mixtures formula, except for the alumina fiber composite. Hysteresis effects were also observed during repeated thermal cycling of that composite. Those features were attributed to reoccurring fiber/matrix separation related to the micromechanical stresses generated during temperature changes and caused by the large thermal expansion mismatch between the alumina fibers and the silicon carbide matrix.
Document ID
19900048107
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Eckel, Andrew J.
(Washington Univ. Seattle, WA, United States)
Bradt, Richard C.
(Washington, University Seattle, United States)
Date Acquired
August 14, 2013
Publication Date
May 1, 1990
Publication Information
Publication: American Ceramic Society, Journal
Volume: 73
ISSN: 0002-7820
Subject Category
Composite Materials
Accession Number
90A35162
Funding Number(s)
CONTRACT_GRANT: NAGW-199
Distribution Limits
Public
Copyright
Other

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