溶接構造物の信頼性向上へのグラフ理論の応用 : その基礎的考え方について

概要

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With the increasing severity of operating conditions of welded structures, the improvement of their safety and reliability or their quality assurance becomes more and more important. As the types or kinds of welded structures become so multifarious recently and important structures, which is usually quite large-scaled, are produced only in small quantities, the establishment of reasonable methodology for estimating the reliability of such structures is strongly needed, because most of the past reliability analyses are oriented more towards mass produced products. This paper is an attempt to establish such a methodology by applying graph theory to the reliability analysis, and it was made clear that (1) the concept of directed graph is quite useful for clarifying the complicated failure logics in welding, (2) the causality of failure can be included into the data base system if connection matrices are utilized, and (3) connection matrices can be used to roughly evaluate the importances of events.
1981-02-05