Eleven porcelain-fused-to-metal bond tests were analyzed for interfacial shear stress distribution using finite-element stress analysis. Stress concentration effects are significant in ten of the 11 tests. A high probability of tensile failure within porcelain or the interfacial region was found in eight of the 11 tests analyzed.
Simple screening geometries can be used to identify highly incompatible ceramic combinations, but they do not identify marginally incompatible systems.
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