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- Title
FAILURE ASSESSMENT OF UHTC PLATE UNDER ELEVATED TEMPERATURE.
- Authors
ZENG, TAO; ZHOU, FEI-FEI; FANG, DAI-NING; YAN, SHI; GUO, YING
- Abstract
In the present study, a theoretical model is presented to assess the failure temperature for ultra-high temperature ceramics (UHTCs). Unlike traditional thermal shock theory, the parameters, such as thermal expansion coefficient and Young's modulus, are considered a function of temperature in the present model. The oxide film of UHTCs is also believed to grow under high temperature. Considering two kinds of conditions, the critical elevated temperature for delamination is calculated using Griffith's theory. By establishing the relation between temperature and the mechanical properties of UHTCs, it is found that the failure behavior of UHTCs is strongly affected by the oxide film thickness, initial temperature and the heating rate.
- Subjects
HIGH temperatures; CERAMICS; CONSTRUCTION materials; ELASTICITY; THERMAL expansion
- Publication
Modern Physics Letters B, 2009, Vol 23, Issue 13, p1633
- ISSN
0217-9849
- Publication type
Article
- DOI
10.1142/S0217984909019806