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Analog device and method of material property testing

A technology of material performance and simulation device, which is applied in the direction of measuring device, aerodynamic test, wear resistance test, etc., can solve the problems of friction and wear of material specimens, and achieve the effect of high heating efficiency

Inactive Publication Date: 2009-09-09
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] refer to figure 1 ~6. 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. Through the selection of the combustion agent and oxidant in the wind tunnel, the heating efficiency and the maximum heating temperature can be improved; the gas control is used The system adjusts the gas composition to achieve an air environment similar to the re-entry process; the design of the servo drive and the special friction and wear test piece solves 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,...

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Abstract

The invention discloses a material performance test simulation device, which is used for the experimental simulation of stress oxidation ablation, high temperature connection, high temperature, high load and low speed friction and wear performance of materials under reentry atmosphere environment. Including the material mechanics testing machine (2), also includes the small atmospheric pressure subsonic gas flow wind tunnel (1), the servo transmission device (7) and the gas control system (8), the material mechanics testing machine (2) and the small atmospheric pressure subsonic The sonic gas flow wind tunnel (1) is placed vertically, the test piece (5) is placed in the test section of the small atmospheric pressure subsonic gas flow wind tunnel (1), and its shaft pin is fixedly connected with the servo transmission device (7). (7) Driven to rotate. The invention also discloses a method for simulating a material performance test by using the above-mentioned material performance test simulation device. A small atmospheric pressure subsonic gas flow wind tunnel, a material mechanics testing machine and a servo transmission device are used to realize the thermal physical and chemical environment of re-entry into the atmosphere, the aerodynamic Experimental simulation of load and rotational loads.

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...

Claims

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Application Information

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Patent Type & Authority Patents(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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