%0 Journal Article %T Problems and Prospects of Improving the Design and Testing Methods of Three-Axle Trolleys for Freight Cars with Increased Axial Loads (Based on Industrial Transport) %A Petrov, D.Y. %A Boronenko, Y.P. %K three-axle trolleys, freight car, spring suspension, axle load, industrial transport, dynamics, strength, endurance testing, dump car %J Bulletin of scientific research results %D 2026 %N 2026 %P 20 %I FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"