A medium-low temperature high-speed impact test device and its test method

Abstract

The invention provides a medium-low temperature high-speed impact test device and a test method thereof. The protective tank body is used as a safety protection device for the projectile impact test; the protective tank body is provided with through holes for threading and pipelines, and one end of the protective tank body is provided with a tank door; The inside of the protective tank is provided with a test table and lighting fixtures; the gunpowder gun and the environment box are installed on the test table; the environment box is equipped with a target frame and a liquid nitrogen evaporation plate; the measurement and control cables of the temperature control device and the environment box Connection, the refrigeration pipeline of the temperature control device is connected to the self-pressurized liquid nitrogen tank; the self-pressurized liquid nitrogen tank is connected to the liquid nitrogen evaporation plate; the electromagnetic speedometer is connected to the detachable barrel of the gunpowder gun, and connected to the oscilloscope through a cable . The device of the invention has the advantages of low manufacturing cost, small volume, simple structure, convenient operation, high launch safety and reliability, and reduces professional requirements for operation.

Description

technical field [0001] The invention relates to the technical field of material impact testing, in particular to a medium-low temperature high-speed impact testing device and a testing method thereof. Background technique [0002] For structural materials used in aviation, aerospace, military and high-speed transportation, such as titanium alloys, aluminum alloys and zirconium alloys, the effects of dynamic load and temperature are service environment factors that must be considered. For example, when in-orbit spacecraft are subjected to high-speed impacts from space debris, protective armor is subjected to ballistic impacts, and polar equipment is subjected to blizzard / flying rock attacks, structural materials must withstand the combined effects of low-temperature or variable-temperature environments and high-speed impacts. On the other hand, the development of aviation, aerospace, weapons and high-speed train technology has promoted the continuous deepening of the research...

AI Technical Summary

Problems solved by technology

[0004] At present, there are not many high-speed impact tests in the simulated low-temperature environment in China, especially the installation of low-temperature refrigeration devices on gunpowder guns or light gas guns, which can provide an ideal low-temperature environment for test targets. Mature and feasible test methods are rare. There are reports

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