Peter Supancic, Robert Danzer, Walter Harrer, Zhong Hua Wang, Stefan Witschnig, Oskar Schöppl
Abstract:For some years ceramic bearing balls based on silicon nitride have been routinely used in technical practice. An important property of bearing balls is their strength, but appropriate testing methods are still missing. In this paper four different methods for strength testing are applied to commercial bearing balls. Each of the tests needs a different type of specimen, their preparation needs a very different effort, and the stress state applied to the specimens is also very different. This causes pros and con…
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