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Analog device and method of material property testing

A material performance, simulation device technology, applied in the measurement device, aerodynamic test, test wear resistance and other directions, can solve the problems of friction and wear of material test pieces, and achieve the effect of high heating efficiency

Inactive Publication Date: 2007-04-18
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art that cannot simulate the environmental performance of materials such as stress oxidation ablation, high temperature connection and high temperature, high load and low speed friction and wear under the reentry environment, the present invention provides a material performance test simulation device that can simulate high speed The ablation environment of hot air flow solves the friction and wear problem of material specimens in simulated environment

Method used

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  • Analog device and method of material property testing
  • Analog device and method of material property testing
  • Analog device and method of material property testing

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Embodiment Construction

[0019] Referring to Figures 1 to 5, a small atmospheric pressure subsonic gas flow wind tunnel is used to generate a high-speed gas flow environment similar to the re-entry atmosphere environment, and the heating efficiency and maximum heating temperature can be improved by selecting the combustion agent and oxidant of the wind tunnel; Use the gas control system to adjust the gas composition to achieve an air environment similar to the re-entry process; design a servo drive and a special friction and wear test piece to solve the friction and wear problem of the material test piece in the simulated environment.

[0020] The small atmospheric pressure subsonic gas flow wind tunnel adopted by the present invention selects methane and oxygen-nitrogen mixed gas as fuel. Methane has a high combustion value and high heating efficiency, and it only takes 2 minutes to achieve a high temperature of 1800°C; the mixed gas of oxygen and nitrogen is used as the oxidant, and the ratio of oxyg...

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Abstract

The invention discloses material performance experimental simulator. It includes material mechanical testing machine, mini type normal pressure subsonic speed combustion gas flow wind tunnel, servo drive, and gas control system. The material mechanical testing machine and mini type normal pressure subsonic speed combustion gas flow wind tunnel are upright. The test piece is set in the latter of which axle pin is fixedly connected with the servo drive. The invention can realize the experimental simulation for re-entry atmosphere heat physical chemistry environment, aerodynamic loading, and rotating loading.

Description

technical field [0001] The invention relates to a material performance test simulation device, and also relates to a material performance test simulation method using the material performance test simulation device. Background technique [0002] The heat-resistant structural integrated components such as nose cones, flaps, and rudders of aerospace vehicles are large and thin-walled complex components, which are composed of many small components connected and combined, and the control components such as flaps and rudders are also movable. Therefore, research on the environmental performance of heat-resistant structural integrated materials for aerospace vehicles under re-entry conditions involves issues such as stress oxidation ablation, high-temperature connections, and high-temperature, high-load, and low-velocity friction and wear. [0003] The document "http: / / www.st.dlr.de / BK / insthome_e.html" discloses a material re-entry atmospheric environmental performance test simula...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/56G01M9/02
Inventor 成来飞张立同徐永东刘小瀛栾新刚赵东林
Owner NORTHWESTERN POLYTECHNICAL UNIV
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