構造物のファジィ信頼性解析における帰属度関数の実験的研究

概要

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It is obvious that not only statistical data, but also human subjective judgments play an important role in determinig the reliability index of a structure. For this reason the author previously proposed a reliability analysis method in which subjective values were treated in the calculation using the concept of a fuzzy set. In this paper, the experimental relation between the subjective evaluation data and objective data is discussed. Carbon fracture test pieces were prepared, whose surface roughness were varied continuously. And their strength were precedently evaluated in liguistic expressions, then 4-point bend tests were conducted. Using the subjective evaluation data, the membership function of the surface roughness was determined, and then the membership function of the strength was presumed by comparing the membership function and the statistical data on the strength. Finally the relationship between two membership functions were argued. This result can be applied to obtain a fuzzy reliability index.
一般社団法人日本機械学会の論文
1988-12-25