METHOD FOR DETERMINING THE HEAT RESISTANCE OF HEAT-SHIELDING COMPOSITE MATERIALS Russian patent published in 2023 - IPC G01N25/72 G01N3/60 G01N25/58 G01M99/00 

FIELD: materials science in aircraft and mechanical engineering.

SUBSTANCE: invention can be used to determine the heat resistance of polymer-based heat-shielding composite materials used in aviation and rocket technology. A method for determining the heat resistance of heat-shielding composite materials is claimed, which consists in subjecting a material sample to a thermal effect, including heating with a high-speed high-temperature gas flow, providing a thermal effect variable in intensity and duration due to a change in the distance from the heat source to the sample, as well as a dynamic effect on the heated the surface of the sample due to the velocity pressure of the gas. The control is carried out in two stages, namely: directly during the test, the heating time of the sample material is determined to the temperature of destruction of the polymer binder using control thermocouples, and then the heat resistance is evaluated by the rate of sample mass loss due to the entrainment of the surface layer destroyed by the thermal and dynamic effects of the gas flow in the testing process.

EFFECT: assessment of the resistance of the composite material under a thermal effect that is variable in time and intensity, simulating real conditions of influence that occur when products of rocket and aviation equipment operate at supersonic and hypersonic speeds.

1 cl, 1 dwg