A ceramic matrix composite material gas environment fatigue test system
A composite material, fatigue test technology, applied in the analysis of materials, the use of repetitive force / pulsation force test material strength, instruments and other directions, can solve the problem of the surface temperature of the test piece, it is difficult to simulate the gas flow rate and other problems, to improve the test temperature, The effect of increasing the gas flow rate
Active Publication Date: 2021-05-11
BEIHANG UNIV
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Problems solved by technology
The semi-sealed test piece, reserve the intake channel and exhaust channel, prepare the gas tanks of various gas components in the required environment, mix and preheat them in a certain proportion, and pass them to the test section to create the required gas environment. The disadvantage is that it is difficult to Simulate the required gas flow rate, and incompletely preheated gas will affect the surface temperature of the test piece
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[0035] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0036] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.
[0037] Such as figure 1 with 2 As shown, the ceramic matrix composite material gas environment fatigue test system provided by this implementation includes an air compressor, a heating bush, a kerosene storage...
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The invention discloses a ceramic matrix composite material (CMC) gas environment fatigue test system, which belongs to the technical field of ceramic matrix composite material testing. The present invention adopts the way of chemical reaction of fuel, carries out chemical reaction between fuel and compressed air in the burner, and the outlet of the combustion chamber is aligned with the test piece to obtain the required temperature, gas composition, flow velocity and flame, etc., so as to more realistically Simulate the actual use environment of the turbine guide vane of the aero-engine, apply mechanical load to the test piece at the same time, carry out the fatigue test of high temperature, high pressure, high gas flow rate and gas environment, and monitor and adjust the surface temperature and strain field of the test piece at any time during the test process.
Description
technical field [0001] The invention belongs to the technical field of ceramic matrix composite material testing, and relates to a ceramic matrix composite material (CMC) gas environment fatigue test system. Background technique [0002] Ceramic materials have many advantages such as high temperature resistance, low density, corrosion resistance and high hardness. But its brittleness is an important shortcoming that restricts the popularization and application of structural ceramic materials. Researchers have conducted extensive research on ceramic toughening methods. The current common toughening methods include short fiber reinforcement (whisker reinforcement), layered toughening and continuous fiber toughening. Commonly used toughening fibers include glass fibers, high modulus carbon fibers, silicon carbide fibers, alumina fibers, etc. The CMC formed after toughening has higher reliability and is not prone to brittle fracture. [0003] In aero-engines, CMC can be used...
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IPC IPC(8): G01N3/60G01N3/34G01N3/06G01N3/04
CPCG01N3/04G01N3/06G01N3/066G01N3/068G01N3/34G01N3/60G01N2203/0005G01N2203/0032G01N2203/0057G01N2203/0073G01N2203/04G01N2203/0641G01N2203/0676G01N2203/0694
Inventor 董少静阮宁恺赵宇晗申秀丽
Owner BEIHANG UNIV