TY JOUR TI ASSESSMENT OF THE DEFORMATION HEAT RESISTANCE OF FIBERGLASS SAMPLES OF COMPOSITE STRUCTURES KW deformation heat resistance KW Martens method KW polymer composite structure KW reinforced fiberglass; heat resistance tests JO Problems of risk management in the technosphere AU Andryushkin, A.Y. AU Izyumova, E.A. AU Kadochnikova, E.N. PY 2024 IS 2024 PB Saint-Petersburg University of State Fire Service of Emercom of Russia