Device and method for testing energy release of active material under different atmospheres

Abstract

The invention discloses a device and a method for testing energy release of an active material under different atmospheres, and aims to solve the problem of inaccurate test of the energy release condition of the active material at present. The testing device consists of a main tank body, two supporting wall surfaces, two supporting bases, an observation window and a fixing screw rod, wherein the main tank body is clamped between the two supporting wall surfaces; the observation window is formed in the front face of the main tank bod; the fixing screw rod penetrates through the two supporting wall faces and the right supporting wall surface; and a closed space is formed by the main tank body, the two supporting wall surfaces and the observation window. The test method comprises the following steps: mounting a sample made of an active material, a pressure sensor, a camera and a Hopkinson pressure bar on the testing device in a matched manner, and testing the energy release condition of the active material to obtain a change rule of pressure and strain; and drawing a curve taking the input impulse as an independent variable and the impact energy release or reaction degree as a dependent variable, and obtaining the impact energy release condition of the active material according to the slope and intercept of the curve. By adopting the method, the energy release condition of the active material can be accurately measured.

Description

technical field [0001] The invention belongs to a test device, in particular to a test device for testing energy release of active materials in different atmospheres by applying different loads through a Hopkinson pressure bar. Background technique [0002] Active material is a special kind of energetic material, which is inert at normal temperature and pressure, and has a certain structural strength, and can be made into fragments and other components; under strong impact, it can react violently and release a large amount of chemical energy. energy, and the energy release is different in anoxic and oxygen-enriched environments. Active materials can be made into missile fragments or explosion protection materials, and have important applications in military and engineering. Compared with inert materials, active materials have the greatest advantage in impact energy release. Therefore, it is of great value for the evaluation and application of active materials to determine ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an active material applied to a separate Hopkinson compression bar platform for the problems of inaccurate testing of energy release of active materials with low strength by direct ballistic experiments, difficulties in carrying out experiments, and difficulty in controlling the loading size. Material release energy testing device and method, reducing the difficulty of carrying out active material energy release testing and improving test accuracy

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