著者

堀籠 教夫

出版者

公益社団法人 日本マリンエンジニアリング学会

雑誌

日本舶用機関学会誌 (ISSN:03883051)

巻号頁・発行日

vol.15, no.9, pp.744-751, 1980

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It is not so easy to obtain the failure rate, the lifetime distribution, MTBF and so on from field data, because the field data are so called the incomplete data or the censored data consisting of time to failure for failed units where the failure and the running time are intermixed.<BR>This paper describes mainly the estimation methods and their application to the field data of marine engine system. The Weibull model adopted is a one with two parameters, i.e., the shape and scale parameter.<BR>In particular, we emphasize the estimation methods, that is, the Best Linear Estimation Method developed by N. R. Mann, the Hazard Plotting Method proposed by W. Nelson and the Maximum Likelihood Method by A. C. Cohen.<BR>Then, we illustrates examples of case studies on the censored data.<BR>Finally, we touch on the determination method of the optimal preventive maintenance on the basis of the Weibull model obtained.