TY JOUR TI YOLOv11 for Radiographic Non-Destructive Testing of Welded Joints KW neural network KW radiographic testing KW defectograms KW detection JO Intellectual Technologies on Transport AU Brekht, E.A. AU Konshina, V.N. PY 2026 IS 0 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"