CRITERIA FOR THE SELECTION OF MATERIALS THAT ENSURE THE RELIABILITY OF ROLLING STOCK ELEMENTS
This paper proposes a methodological approach to select the material according to the «price-quality» criterion based on functional and mathematical definitions of reliability indicators of rolling stock parts. At the same time, the reliability of the part, as an indivisible element of the system, determines the reliability of the material, as a consequence of its quality. The possibility of the most objective, from an economic point of view, material selection is shown by the example of evaluating individual reliability indicators of an element of an auto-coupling device.