| Summary: | 碩士 === 大同大學 === 機械工程學系(所) === 99 === In this study, the comparisons and analyses of the costs of original and non-original current collector brushes installed in 301 rolling stocks are presented. The relevant procurement and analytical data of current collector brushes installed in medium-capacity VAL256 EMU cars are also introduced for reference to evaluate the features of different products. Further, the relevance between equivalent product procurement and cost down is discussed according to the information statistics. Results show that the expired duration, average abrasion rate, yearly consumption amount of the products from original manufacturers are indeed superior to those of substitutions. Therefore, considering special attributes and high-risk acquisition of the current collector brushes, it is strongly suggested that the feasibility of developing substitutions should be evaluated discreetly through the review of manpower consumption as well as long-term tests.
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