TY JOUR TI Investigation of Fatigue Aging of Insulation of Traction Electric Motors of Diesel Locomotives Under Cyclic Load KW Traction electric motor of a diesel locomotive KW insulation of electric machines of locomotives JO Bulletin of scientific research results AU Shrayber, M.A. PY 2023 IS 2023 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"