DEVELOPMENT OF A DESIGN-EXPERIMENTAL METHODOLOGY FOR THE PREDICTION OF RELIABLE EXPLOITATION OF FREIGHT RAILWAY CARS

The article is devoted to the front burner problem of effective exploitation of industrial tank-wagons with the presence of residual operation time. The procedure of valuation of tank-cars' residual operation time for liquid gas transportation was proposed first. Key technical and exploitation parameters of the tank-wagon model 15-1408-10 according to testing loads that simulate loads in real exploitation were approved. The calculation, which, as against existent ones for valuation of universal freight cars' residual operation time, allows to calculate equivalent stress using test results that rely on a change of internal pressure activity during drainage and filling operations, and the most unfavorable combination of simulation of active loads on a tank-wagon was proposed. The proposed procedure can be adapted for use during valuation of freight cars' residual operation time, or for other means of transport and machineries