Assessment of durability and reliability of ET41 series locomotive wheels based on laboratory tests
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Silesian University of Technology
Mirosław Witaszek   

Silesian University of Technology
Submission date: 2020-07-20
Final revision date: 2020-11-16
Acceptance date: 2020-11-16
Online publication date: 2020-11-17
Publication date: 2020-11-17
Diagnostyka 2020;21(4):57–66
The article presents the method of determination of life and reliability of rail vehicles wheels on the basis of the wear model developed on the basis of laboratory tests results. The method allowed quantitative assessment of the impact of various factors on the life of the wheels due to flange and tread wear. It was stated that the most significant impact on life resulting from the flange wear is exerted by the share of curves in track length, whereas life due to tread wear – longitudinal creepage of the tread with regard to the rail. The reliability assessment was performed using the Monte Carlo method. It allows to take into account randomness of both interaction conditions and the wear process. The determined reliability was described by the Weibull’s distribution. The calculations were made for the ET41 series electrical freight locomotives. The method presented in this work can be suitable for preparation of schedules of wheel repairs and thus contribute to the increase of ride safety and comfort and therefore to the decrease of the costs of maintenance of the rail vehicles.
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