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Fracture toughness of advanced ceramics at room temperatureResults of round-robin fracture toughness tests on advanced ceramics are reported. A gas-pressure silicon nitride and a zirconia-toughened alumina were tested using three test methods: indentation fracture, indentation strength, and single-edge precracked beam. The latter two methods have produced consistent results. The interpretation of fracture toughness test results for the zirconia alumina composite is shown to be complicated by R-curve and environmentally assisted crack growth phenomena.
Document ID
19930036845
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Quinn, George D.
(NIST Gaithersburg, MD, United States)
Salem, Jonathan
(NASA Lewis Research Center Cleveland, OH, United States)
Bar-On, Isa
(NASA Lewis Research Center Cleveland, OH, United States)
Cho, Kyu
(Worcester Polytechnic Inst. MA, United States)
Foley, Michael
(Norton Industrial Ceramics Corp. Northboro, MA, United States)
Fang, HO
(Allied-Signal Aerospace Co., Garrett Auxiliary Power Div., Phoenix AZ, United States)
Date Acquired
August 15, 2013
Publication Date
October 1, 1992
Publication Information
Publication: National Institute of Standards and Technology, Journal of Research
Volume: 97
Issue: 5
ISSN: 1044-677X
Subject Category
Nonmetallic Materials
Accession Number
93A20842
Funding Number(s)
CONTRACT_GRANT: DE-AC05-84OR-21400
Distribution Limits
Public
Copyright
Other

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