主機系の損傷保全とその影響因子に関する統計的考察

概要

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The author has analysed statistically on damage data of propulsive engines for the classed ships following the previous study on propulsive shaf tings. Data base of 139 ships collected with survey reports in the period of 8 years were used. Degrees of damages in engine parts were converted into amount of maintenance in the same procedure as the mentioned study. Then the relation between the amount of maintenance and other factors were investigated by application of quantification theory. Main conclusions obtained are as follows;<BR>(1) Locations in which damages occur in main engines are closely connected with engine type and engine performance such as Pmax.<BR>(2) Maintenance mode which means how frequently damages occur or maintenance work is done through 8 years examined in this study was investigated. And it was found that it has close correlation with engine type, revolution and ship's nationality.<BR>(3) Constitutional factors of propulsive engine systems which influence the amount of maintenance are revolution, engine type and ship's kind in descending order. Ship's nationality has little influence on it.<BR>(4) Membership functions regarding influential factors and their categories relating amount of maintenance were introduced. By using these Fuzzy functions the trend of the amount of maintenance in one propulsive engine system can be easily compared with another system.
公益社団法人日本マリンエンジニアリング学会の論文