Experimental device for service reliability of composite blades under shock, vibration and high temperature excitation

Abstract

The service reliability experimental device of composite blades under impact, vibration and high temperature excitation of the present invention includes: a power supply module, a measurement module, an adjustable angle impact module, a clamping module, a thermal environment module, a projectile recovery module, a basic excitation module and Platform module; the clamping module is set in the thermal environment module and is used to clamp and fix the blade test piece to be tested; the adjustable angle impact module is used to launch projectiles to impact the blade test piece; the power supply module provides power to the adjustable angle impact module ; The projectile recovery module is placed in the thermal environment module and behind the clamping module to recover projectiles; the thermal environment module is located on the platform module to provide an adjustable high-temperature test environment; the basic excitation module is located on the platform module for The clamping module provides single-degree-of-freedom vibration; the measurement module is used to measure vibration size, projectile trajectory and impact force. The device realistically simulates the actual working environment of composite blades and provides more realistic and reliable experimental data for impact experiments.

Description

technical field [0001] The invention belongs to the field of impact dynamics, and relates to an experimental device for service reliability of composite blades under the excitation of impact, vibration and high temperature. Background technique [0002] With the rapid progress and development of aerospace technology, the demand for high-performance aerospace materials has gradually increased. For a long time, the research on materials related to high-speed machinery such as aircraft has often focused on the static or low-speed characteristics of materials, which gradually exposed some problems. , and cause some serious consequences. For example, many aircraft bird strikes first appeared in the United States at the end of the last century. With the passage of time and the rapid development of global air traffic, such events have attracted more and more attention from relevant scholars. As a result, the theory of shock dynamics has begun to develop rapidly, and shock dynamic ...

AI Technical Summary

Problems solved by technology

Although the above two patents considered the influence of the temperature of the external environment, they did not consider the mechanical influence during the working process of the machine. For example, under the influence of the manufacturing process or the external environment, the turbine blades will inevitably vibrate during operation. This should be one of the factors to be considered in the impact test

[0006] Patent CN201710896598.0 uses a light gas gun as the impact power source, and the mechanical structure can be used to load the sample with preset axial pressure and preset impact force to simulate a variety of mechanical environments, but the patent does not affect the thermal environment of the sample. Without taking it into account, in fact, the aerodynamic and thermal environment faced by most steam turbine blades and other components in the working state will have a significant impact on the performance of the material

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