Test apparatus and test method for heat insulation performance of honeycomb panel

Abstract

The invention discloses a test apparatus and a test method for the heat insulation performance of a honeycomb panel. A test piece to be tested is a high temperature alloy honeycomb panel. The test apparatus comprises a laser, a controller, an optical path adjusting device, a test fixture, a temperature sensor and a data acquisition system. The test method provided by the invention comprises the following steps: disposing the high temperature alloy honeycomb panel in the test fixture; adjusting the laser, the controller and the optical path adjusting device to allow laser output to exactly satisfy requirements for a heating range of the test piece to be tested; compiling a laser power control program according to a heat flux density curve to be simulated in testing; adjusting the laser power control program, confirming that the test apparatus is completely right and then starting testing; and collecting testing data from the data acquisition system connected with the temperature sensor and disposing and analyzing the data. The test apparatus and the test method for the heat insulation performance of the honeycomb panel in the invention have the following advantages: small energy consumption, simple operation, capacity of convenient and rapid changing of a temperature and capability of accurate and effective testing of the heat insulation performance of the honeycomb panel.

Description

technical field [0001] The invention relates to a heat insulation performance test device, in particular to a honeycomb panel heat insulation performance test device and a test method thereof. Background technique [0002] Now major countries in the world are competing to develop hypersonic aircraft in order to achieve rapid global reach and effective penetration in modern warfare, so as to strike combat targets quickly and accurately. As the flight speed of hypersonic vehicles is greatly increased, the aircraft will face serious aerodynamic heating problems. Aerodynamic heating is caused by the friction of the gas against the surface of the aircraft against the aircraft. The gas close to the aircraft undergoes a complex heat exchange process on the surface of the aircraft structure. This process includes heat conduction between gas molecules, diffusion heat transfer of gas components, gas decomposition, and heat flow exchange caused by gas atomic recombination. According ...

AI Technical Summary

Problems solved by technology

Since it is difficult to simulate the aerodynamic heating process of ultra-high-speed aircraft, the actual research on the thermal insulation performance of superalloy honeycomb panels uses external heating sources to simulate aerodynamic heating. Commonly used are quartz lamps or graphite heaters, etc., but these methods generally have energy consumption Large, slow temperature rise, heat flux density is not easy to accurately control and other defects

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