An explosive impact and thermal composite test device

Abstract

The invention discloses an impact and thermal force composite testing device of an explosive. The device comprises a base, a strike anvil, a strike rod, a drop hammer and a heating device, wherein the bottom of the strike anvil is embedded in the base, and the strike anvil is used for placing an explosive piece, the strike rod is arranged above the strike anvil, the drop hammer is arranged above the strike rod, and the heating device can be used for heating the base. According to the device disclosed by the invention, the heating device used for heating the base is arranged, and can transfer heat to the explosive piece, the temperature of the explosive piece can be set, and impact tests at different heights can be carried out by utilizing the drop hammer to impact, so that impact sensitivities of the explosive piece under different temperatures are achieved, and evaluation means are provided for the safety of the explosive under a high-temperature condition.

Description

technical field [0001] The invention belongs to the field of thermal and mechanical composite safety evaluation of energetic materials, in particular to a device capable of testing the safety performance of energetic materials under the composite conditions of impact and high temperature, in particular to an explosive impact and thermal composite test device . Background technique [0002] When the weapon flies in the atmosphere at high speed for a long time, the aerodynamic heating effect is very obvious. The ambient temperature of the outer surface of the internal warhead may be as high as 150°C to 200°C, and the temperature of the charge inside the warhead will also be significantly higher than normal temperature. High temperature will not only cause changes in the physical stability, mechanical properties, and chemical stability of explosives, but also reduce their safety performance, which will bring a severe test to the safety of explosive charges under high temperatur...

AI Technical Summary

Problems solved by technology

High temperature will not only cause changes in the physical stability, mechanical properties, and chemical stability of explosives, but also reduce their safety performance, which will bring a severe test to the safety of explosive charges under high temperature conditions.

Under high temperature conditions, people lack awareness of the impact safety of explosives and lack suitable loading methods. The existing test methods for explosive impact sensitivity cannot meet the requirements for evaluating the heat resistance of weapon explosives. Designing relevant test devices and establishing relevant test methods can help Provide important support for the design and safety evaluation of heat-resistant explosives

[0003] In the traditional drop weight impact sensitivity test, the amount of powdered explosives is only 30mg~50mg, and the amount of tablet impact sensitivity is only 50mg~100mg. Under the action of pressure, the explosives will flow to the surrounding gaps; and the actual explosives used are Formed charge has a large amount of charge, so the drop hammer impact sensitivity of traditional powder and tablet explosives is difficult to represent the safety of explosives in practical applications

The Susan test, slide test and other tests of the explosive column are costly, long-term, and the amount of charge is relatively large, reaching the order of more than 100 grams

It is necessary and feasible to establish a gram-level impact sensitivity test between the traditional drop weight impact sensitivity and the explosive column impact sensitivity, and these traditional tests can only characterize the impact safety of explosives at room temperature, and it is impossible to know the impact of explosives under different conditions. Impact safety under temperature conditions

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