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A hybrid procedure for dynamic characterization of ceramics at elevated temperatureA hybrid experimental-numerical procedure to characterize the dynamic fracture response of ceramics and ceramic composites at temperatures in excess of 1400 C is described. This hybrid methodology was developed to characterize dynamic fracture responses and to study the effect of temperature on dynamic fracture responses of ceramics and ceramic matrix composites. The hybrid methodology was used to determine the dynamic stress intensity factors (SIF) associated with a running crack in a three-point bend specimen at elevated temperature. This procedure was utilized to determine the dynamic SIF versus crack velocity relations of alumina, TiB2-particulate/SiC-matrix composite, and SiC-whisker/Al2O3-matrix composite. Minor differences in the dynamic SIF versus crack velocity relations at room and elevated temperature were seen, and significant differences under impact and static loadings were observed in the dynamic SIF versus crack velocity relations.
Document ID
19900057434
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Yang, K. H.
(Brown University Providence, RI, United States)
Kobayashi, A. S.
(Washington, University Seattle, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Nonmetallic Materials
Meeting Information
Meeting: Hostile Environments and High Temperature Measurements
Location: Kansas City, MO
Country: United States
Start Date: November 6, 1989
End Date: November 8, 1989
Accession Number
90A44489
Funding Number(s)
CONTRACT_GRANT: NAGW-199
Distribution Limits
Public
Copyright
Other

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