Abstract
In the present work we investigated experimentally a thick ring configuration of Al2O3 ceramic subjected to internal pressure. Non-transforming ceramic of this type may exhibit stress induced microcracking. We model this possible microcracking process with an anisotropic damage constitutive equation. We solved the appropriate boundary value problem explicitly. Based on the experimental strain-load curve and the predictions of the model, we attempted to resolve the stress-strain behaviour of a specific, coarse grained Al2O3 ceramic. The present results deal with the mechanics of the test. Some electron microscopy observation will follow. The proposed ring test can be very well used for analysis of transforming ceramics, as well as for biaxial creep.
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