セラミックスの保証試験の定説についての考察 : 定説の真偽の解析的検討

概要

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It has been accepted not only that effective proof testing of ceramic materials demands rapid loading and unloading to prevent strength degradation but also that especially rapid unloading brings truncated strength of σ_p (the stress just before very rapid unloading). Such common sense in proof testing as above has been rechecked with analytical considerations. The analysis reveals that as the loading and unloading rate increases, weaker samples tend to survive easily. As a consequence, the truncated strength is not characterized analytically, and Weibull curve will not have asymptotic feature. The present analytical results come to the conclusion that the common sense in proof testing will not be accepted from the physical point of view.
一般社団法人日本機械学会の論文
1999-04-25