TY JOUR TI Experimental Studies of the Dependence of the Current Flowing Through an Insulating Joint on Changes in Its Resistance KW technical diagnostics KW monitoring of header devices KW predictive analytics KW insulating joints KW rail circuits KW pre-fault conditions KW signal current JO Proceedings of Petersburg Transport University AU Nadezhkin, V.A. AU Bredun, I.S. PY 2026 IS 23 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"