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A Biaxial‐Flexure Test for Evaluating Ceramic Strengths
Author(s) -
SHETTY D. K.,
ROSENFIELD A. R.,
DUCKWORTH W. H.,
HELD P. R.
Publication year - 1983
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1983.tb09964.x
Subject(s) - materials science , weibull distribution , ceramic , weibull modulus , composite material , fixture , alumina ceramic , tension (geology) , test fixture , stress (linguistics) , ultimate tensile strength , mathematics , mechanical engineering , engineering , linguistics , statistics , philosophy
An improved test fixture for biaxial‐tension strength testing of ceramics featuring uniform pressure loading of disks was developed and qualified. Biaxial data were obtained for an alumina ceramic, along with comparable uniaxial data from three‐ and four‐point flexure tests. Weibull statistics provided a good description of the size effect on data from the two uniaxial tests, but underestimated the effect of stress biaxiality. The biaxial strengthening observed in the alumina ceramic is consistent with that observed previously in a glass‐ceramic.