Proof test of ceramic parts for continuous operation
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Dependences are constructed for calculating short-time strength and probability of failure of ceramic parts loaded (under different conditions) successively with constant test and operating loads of differing durations. These dependences are based on the concepts that durability of the ceramic is determined by the time of growth in critical defects. Using these dependences, an expression which accounts for depletion in safe life of the ceramic during the proof tests is obtained for the probability of failure of a tested part during operation. It is suggested that the test load for the proof test be determined by minimizing the probability of failure of proof tested ceramic parts.
KeywordsTest Load Continuous Operation Safe Life Operating Load Critical Defect
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