TY JOUR TI PREDICTION OF PISTON RING WEAR IN MARINE MAIN ENGINE USING NEURAL NETWORKS KW piston rings KW wear KW neural networks KW diagnostics KW maintenance of the cylinder piston group JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Grinek, A.V. AU Fishchenko, A.M. AU Boychuk, I.P. AU Bashkatov, V.A. AU Perelygin, D.N. PY 2026 IS 11 PB Belgorod State Technological University named after V.G. Shukhov