Abstract
When strength degradation due to slow crack growth occurs during proof testing of ceramic components, it is desirable to determine proof test conditions such that Sf min≥Sd is satisfied and the probability of surviving the proof test becomes maximum, where Sf min is the minimum strength after proof testing and Sd is the required strength. In the previous paper, the optimum proof testing conditions were studied for the case of uniform stress distribution. In the present paper, the case of nonuniform stress distribution is studied. This case is important since real structural components are usually subjected to nonuniformly distributed stresses. It is shown that if a proof test is conducted such that Sf min≥Sd is satisfied at the point of maximum stress, then Sf min≥Sd is satisfied automatically at every point in the component. Hence, the optimum proof testing conditions for the case of nonuniform stress distribution can be determined by considering only the point of maximum stress.
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