セラミックスの保証試験後の疲労特性に関する研究 : 第1報, 理論的解析

概要

論文の詳細を見る
In ceramic materials, it is important to evaluate the strength degradation after proof testing because of slow crack growth (SCG) in test cycles. In this study, a theoretical analysis of the strength of ceramics subjected to cyclic loading after proof testing was performed. The variation in crack length due to SCG during proof testing was calculated, assuming that the time-dependent crack velocity can be expressed as a single power function of the stress intensity factor. The fatigue life was correlated with the evaluated crack length. The life distribution and the minimum life were formulated using the distribution function of crack length, to be determined empirically. Effects of factors associated with testing condition on the fatigue life were investigated by a numerical simulation.
一般社団法人日本機械学会の論文
1990-02-25