Medium-low temperature high-speed impact test device and test method thereof

Abstract

The invention provides a medium-low temperature high-speed impact test device and a test method thereof. A protection tank body is used as a safety protection device for a projectile impact test; theprotection tank body is provided with a through hole for threading and a pipeline, and one end of the protection tank body is provided with a tank door; a test table board and an illuminating lamp arearranged in the protection tank body; a gunpowder gun and an environment box are arranged in the test table board; a target frame and a liquid nitrogen evaporation plate are arranged in the environment box; the measurement and control cable of the temperature control device is connected with the environment box, and the refrigeration pipeline of the temperature control device is connected with aself-pressurization liquid nitrogen tank; the self-pressurization liquid nitrogen tank is connected with the liquid nitrogen evaporation plate; an electromagnetic velometer is connected with the detachable gun barrel of the gunpowder gun and connected with an oscilloscope through a cable. The device has the advantages of being low in manufacturing cost, small in size, simple in structure, convenient to operate and high in launching safety and reliability and reducing professional requirements of 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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