Use of a Falling-Weight Tester for Assessing Ceramic Impact Strength

Abstract

A falling-weight device was developed for testing ceramic impact strength. Tests carried out on a large sample of commercial tiles showed that the incremental height test, wherein drop height is raised gradually, is the most reliable. In order to assess the accuracy of the test, an additional experiment was performed on laboratory-made briquettes fired at 550, 650, 750, 850, and 950 °C. In contrast to the results of Bronitsky and Hamer's (1986) pendulum test (but in conformity with general principles of ceramic engineering), the present study found a strong correlation between firing temperature and impact strength. It is concluded that the falling-weight device provides a simple, accurate, and reliable test for ceramic impact strength.

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