Abstract
The internal micromechanical stresses which develop in ceramic-ceramic composites as a consequence of temperature changes and thermoelastic property differences between the reinforcing and matrix phases are addressed by the Eshelby method. Results for two whisker reinforced ceramic matrix composites and for quartz particles in porcelain are discussed. It is concluded that the stresses which develop in the second phase reinforcing inclusions are quite substantial (GPa-levels) and may be highly anisotropic in character. These stresses are additive to the macroscopic thermal stresses from temperature gradients which are encountered during heating and cooling, and also to externally applied mechanical stresses (loads). These micromechanical stresses are expected to be highly significant for thermal cycling fatigue and other failure processes.
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© 1993 Springer Science+Business Media Dordrecht
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Li, Z., Bradt, R.C. (1993). Thermally Induced Micromechanical Stresses in Ceramic/Ceramic Composites. In: Schneider, G.A., Petzow, G. (eds) Thermal Shock and Thermal Fatigue Behavior of Advanced Ceramics. NATO ASI Series, vol 241. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-8200-1_16
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DOI: https://doi.org/10.1007/978-94-015-8200-1_16
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