Test device for detecting fatigue performance of sample piece
A technology of fatigue performance and test equipment, which is applied in the direction of measuring equipment, aircraft component testing, mechanical component testing, etc., to achieve a wide range of applicable objects and ensure accuracy
Active Publication Date: 2021-03-09
湖北超卓航空技术有限公司
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Problems solved by technology
[0005] Aiming at the technical problems existing in the prior art, the present invention provides a test device for fatigue performance detection of samples to solve the above-mentioned problem of how to effectively perform fatigue detection on the performance of the repaired landing gear
Method used
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Embodiment Construction
[0030] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0031] Cold spraying is a spraying technique based entirely on the principle of aerodynamics. The particles are heated at a low temperature and still remain solid. The solid particles are deposited on the surface of the workpiece through plastic rheology caused by "adiabatic shear instability" or through mechanical processes such as severe plastic deformation under extremely high stress, strain and strain rate conditions. . Therefore, during the spraying process, the particles are not prone to oxidation, burning, phase change, and tissue change.
[0032] The residual stress of the coating is mainly compressive stress, the spraying efficiency is high, and thick coatings and even bulk materials can be prepared. Base...
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The invention relates to the technical field of aircraft landing gear sample piece fatigue performance detection, in particular to a test device for detecting the fatigue performance of a sample piece. The test device for detecting the fatigue performance of the sample piece comprises a main bearing frame, two groups of tensile test benches and an auxiliary platform arranged between the two groupsof tensile test benches are arranged at the top of the main bearing frame; the tensile test bench is provided with a moving plate and a pushing assembly connected with the moving plate. The test device for detecting the fatigue performance of the sample piece has the beneficial effects that the undercarriage beam is simulated through the corresponding sample piece, the corresponding sample pieceis borne through the two sets of movable plates, and a transverse load is applied to the sample piece through stretching in the horizontal direction; meanwhile, the balancing weight is controlled to ascend and descend in the vertical direction, so that a load in the vertical direction is generated on the sample piece in the vertical direction, the stress condition of the undercarriage beam in therising and falling process is simulated, and the fatigue crack repairing capacity of the cold spraying technology is reflected.
Description
technical field [0001] The invention relates to the technical field of aircraft landing gear sample fatigue performance detection, in particular to a test device for sample fatigue performance detection. Background technique [0002] Landing gear is an accessory device used to support the aircraft and move on the ground (water surface) when the lower part of the aircraft is used for take-off and landing or ground (water surface) taxiing. The landing gear is the only part that supports the entire aircraft, so it is an integral part of the aircraft; without it, the aircraft cannot move on the ground. After the aircraft takes off, the landing gear can be retracted depending on the flight performance. Landing gear is an important load-bearing and manoeuvrable part of an aircraft, which plays an extremely important role in the safe take-off and landing of the aircraft. Landing gear is a necessary support system for aircraft takeoff, landing, taxiing, ground movement and parking...
Claims
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IPC IPC(8): G01N3/08G01N3/04G01N3/02G01M13/00B64F5/60
CPCG01N3/08G01N3/04G01N3/02G01M13/00B64F5/60G01N2203/0003G01N2203/0017G01N2203/0062G01N2203/0071
Inventor 李羿含张清贵李星彤高植强徐建
Owner 湖北超卓航空技术有限公司