セラミックスのプルーフテストの最適試験条件 : 応力分布が不均一な場合

概要

論文の詳細を見る
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 S_<f min>≧S_d is satisfied and the probability of surviving the proof test becomes maximum, where S_<f min> is the minimum strength after proof testing and S_d 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 S_<f min>≧S_d is satisfied at the point of maximum stress, then S_<f min>≧S_d 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.
一般社団法人日本機械学会の論文
1992-10-25