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Fracture resistance of a TiB2 particle/SiC matrix composite at elevated temperatureThe fracture resistance of a commercial TiB2 particle/SiC matrix composite was evaluated at temperatures ranging from 20 to 1400 C. A laser interferometric strain gauge (LiSG) was used to continuously monitor the crack mouth opening displacement (CMOD) of the chevron-notched and straight-notched, three-point bend specimens used. Crack growth resistance curves (R-curves) were determined from the load versus displacement curves and displacement calibrations. Fracture toughness, work-of-fracture, and R-curve levels were found to decrease with increasing temperature. Microstructure, fracture surface, and oxidation coat were examined to explain the fracture behavior.
Document ID
19890043703
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Jenkins, Michael G.
(Tokyo, University Japan)
Salem, Jonathan A.
(NASA Lewis Research Center Cleveland, OH, United States)
Seshadri, Srinivasa G.
(Standard Oil Engineered Materials Co. Niagara Falls, NY, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Publication Information
Publication: Journal of Composite Materials
Volume: 23
ISSN: 0021-9983
Subject Category
Composite Materials
Accession Number
89A31074
Distribution Limits
Public
Copyright
Other

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