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Evaluation of thermal and mechanical loading effects on the structural behavior of a SiC/titanium compositeComposite specimens of titanium-15-3 matrix reinforced with continuous SCS-6 silicon carbide fibers were tested under a variety of thermal and mechanical loadings. A combined experimental/finite element approach was used to estimate the effective in-situ modulus of the matrix material and to evaluate changes in modulus due to the applied loads. Several fiber orientations were tested. Results indicate that the effect of the thermal loads on composite stiffness varies with fiber orientation. Applications of this method to test specimens damaged by uniaxial tension, thermal cycling, and isothermal fatigue loadings are used to illustrate that by monitoring overall structural behavior, changes in stiffness caused by thermomechanical loading can be detected.
Document ID
Document Type
Conference Paper
Grady, Joseph E.
(NASA Lewis Research Center Cleveland, OH, United States)
Lerch, Bradley A.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1990
Subject Category
Composite Materials
Report/Patent Number
NAS 1.15:102536
Meeting Information
Structures, Structural Dynamics and Materials Conference(Long Beach, CA)
Funding Number(s)
PROJECT: RTOP 505-63-11
Distribution Limits
Work of the US Gov. Public Use Permitted.

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