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Effect of microstructure and notch root radius on fracture toughness of an aluminum metal matrix compositeRecent results on the effects of matrix aging condition (matrix temper) and notch root radius on the measured fracture toughness of a SiC particulate reinforced aluminum alloy are reviewed. Stress intensity factors at catastrophic fracture were obtained for both underaged and overaged composites reveal. The linear relation found between apparent fracture toughness and the square root of the notch root radius implies a linear dependence of the crack opening displacement on the notch root radius. The results suggest a strain controlled fracture process, and indicate that there are differences in the fracture micromechanisms of the two aging conditions.
Document ID
19890062829
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Manoharan, M.
(Case Western Reserve Univ. Cleveland, OH, United States)
Lewandowski, J. J.
(Case Western Reserve University Cleveland, OH, United States)
Date Acquired
August 14, 2013
Publication Date
June 1, 1989
Publication Information
Publication: International Journal of Fracture
Volume: 40
ISSN: 0376-9429
Subject Category
Composite Materials
Accession Number
89A50200
Funding Number(s)
CONTRACT_GRANT: NAGW-1193
Distribution Limits
Public
Copyright
Other

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