ファジィルールと統計データからの信頼性評価データのファジィ推定法

概要

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Probabilistic data of load and strength are required to obtain the reliability index of a structure. In practice, the amount of field data is insufficient, and only experimental data can be available in the analysis of the reliability of a huge structure. The structure is often evaluated in linguistic values. If statistical data do exist regarding evaluation items, fuzzy values can be quantified using the fuzzy probability which is defined as the product of a fuzzy membership level and the probability density. On the other hand, the specialists possess not only strict knowledge, but also fuzzy knowledge. In this paper, the author proposes the fuzzy estimation method of the mean value and standard deviations of the load and/or strength utilizing the fuzzy rules of specialists and the statistical data. Further, this method is justified by comparison with the experimental data.
一般社団法人日本機械学会の論文
1990-02-25