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Publisher DOI: 10.1016/j.jeurceramsoc.2010.08.008
Title: Determination of the multiaxial failure criteria for alumina ceramics under tension–torsion test
Language: English
Authors: Nohut, Serkan 
Usbeck, Anna K. 
Özcoban, Hüseyin 
Krause, Dieter 
Schneider, Gerold A. 
Issue Date: 2010
Source: Journal of the European Ceramic Society ; Vol.30.2010, pp. 3339-3349
Journal: Journal of the European Ceramic Society 
Abstract (english): 
Failure probability of ceramic components in multiaxial stress state can be predicted using the uniaxial test results (e.g. tension test, 4-point-bending test) when a suitable multiaxial criterion, which introduces the triaxiality of stress state, is known. In this article, tension–torsion tests were performed with alumina (Alsint 99.7) specimens from a standard manufacturer under two different load cases. Next experimental results were compared with the numerically calculated effective volume and effective surface values according to different multiaxial failure criteria. It was concluded that the specimens failed due to surface flaws and the normal stress criterion is the most appropriate criterion for the strength prediction of alumina ceramics under multiaxial stress state. Furthermore, it was shown that the Weibull modulus does not play a big role for the prediction of strength of alumina ceramics.
DOI: 10.15480/882.850
ISSN: 0955-2219
Institute: Keramische Hochleistungswerkstoffe M-9 
Document Type: Article
License: In Copyright In Copyright
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