TY JOUR TI INVESTIGATION OF CHANGES IN THE MAGNETIC PROPERTIES OF SCREWS AND SELF-TAPPING SCREWS AS A RESULT OF THERMAL EXPOSURE KW screw KW self-tapping screw KW thermal effect KW coercitimeter KW magnetic properties JO Siberian Fire and Rescue Bulletin AU Gorbunov, A.S. AU Bogdanov, A.A. PY 2024 IS 2024 PB FSBEE HE Siberian Fire and Rescue Academy EMERCOM of Russia