Integrated tester and test method for shock absorption, noise reduction and impact resistance performance of composite materials

Abstract

The invention relates to the technical field of material testing, in particular to an integrated tester and a test method for shock absorption, noise reduction and impact resistance performance of composite materials. And pre-power amplifier and pure post-stage power amplifier, multiple sets of piezoelectric ceramics and piezoelectric ceramic drive power, projectile centrifugal acceleration ejection device. And multiple sets of projectile sensors, telescopic support frame, serpentine telescopic thin tube, laser displacement sensor, high-speed camera, multiple sound pressure sensors, projectile recovery device and data acquisition instrument, the present invention can simultaneously satisfy composite material vibration reduction, The integrated testing of noise reduction and impact resistance requires comprehensive test indicators, and has the advantages of high efficiency and mobility, which is convenient for on-site testing and objectively evaluates the shock absorption, noise reduction, and impact resistance of composite materials.

Description

technical field [0001] The invention relates to the technical field of material testing, in particular to an integrated tester and a testing method for shock-absorbing, noise-reducing, impact-resistance performance of composite materials. Background technique [0002] With the Chinese Air Force's accelerated installation of high-performance transport aircraft, supersonic fighter jets, high-speed helicopters and other aircraft and the upgrading of power equipment, the problem of vibration and noise control in aircraft cabins has become increasingly severe. On the other hand, for surface ships and submarines whose operational scale and capabilities are constantly leaping, as the complexity of their threat targets is greatly enhanced, how to improve their vibration and noise reduction and impact resistance performance to meet the requirements of concealment, habitability, and safety. The stringent requirements of my country's naval equipment have increasingly become an urgent pr...

AI Technical Summary

Problems solved by technology

Patent CN108760205 A developed a self-excited shock-vibration composite test equipment. Although it can perform comprehensive testing of shock-vibration composite mechanical properties, it still needs to be used in conjunction with a vibration table, and portability cannot be achieved.

Although the above related patents have achieved comprehensive testing in some aspects, the integration level is still not high, and it is impossible to conduct research on vibration, noise, and shock characteristics at the same time

[0004] Separate testing of vibration reduction, noise reduction, and impact resistance results in low test efficiency, and due to the adjustment of installation boundary conditions and test sites, it is easy to cause changes in the inherent characteristic parameters of the tested sample, which seriously affects the accuracy of the test

However, most of the testing instruments currently available on the market only test a certain property of the material. If it is necessary to understand the vibration and noise reduction and impact resistance of the material, it will take a lot of manpower and material resources to build an experimental system. It will lead to the large size and high cost of the test system and test instruments used, which are not suitable for engineering site use, and lack a set of effective test methods to obtain the vibration and noise reduction of composite materials efficiently, quickly and accurately. Impact resistance

The lack of the above-mentioned testing instruments and testing methods has seriously affected the objective judgment of the scientific and technical personnel of my country's military R&D units on the vibration and noise reduction and impact resistance performance of high-performance composite materials, and has seriously restricted the development of my country's new generation of air force and navy weapons and equipment.

Images