Pneumatic accelerating impact experiment method

Abstract

The invention discloses a pneumatic accelerating impact experiment method which is characterized by comprising the following steps: (1) installing and debugging a pneumatic accelerating impact experiment device; (2) installing and debugging a test instrument; (3) inflating a high-pressure air chamber; (4) starting the test instrument, switching on a power supply of a solenoid valve simultaneously, and accelerating a massive impact body along an accelerating tube to make the impact body impact a tested body; (5) reading a test result through the test instrument. The method has simple steps and is conveniently operated, the massive impact body can be reused, and the test instrument can be used for reading various dynamic impact parameters, so that the method can be used for effectively testing the harmful effects of accidental impact of heavy objects of 2kg-5kg to explosives, or of accidents in which objects of 1kg-5kg impact organic windows in the speed range of 8m / s-80m / s (namely the speed per hour is 28.8km-288km). Thus, the method is suitable for promotion and use.

Description

technical field [0001] The invention relates to an impact test method, in particular to an aerodynamic acceleration impact test method. Background technique [0002] In explosive transportation accidents or other accidents, gunpowder and explosives will cause accidents such as combustion and explosion due to the accidental impact of large-scale objects, resulting in heavy casualties and property losses. In addition, the plexiglass windows of automobiles and trains running at high speed may also cause accidents due to accidental impact of objects of a certain mass, causing heavy casualties and property losses. [0003] Within the speed range of 8m / s~80m / s (instantaneous speed 28.8km~288km), the accidental impact of reusable and accurately positioned 2kg~5kg heavy objects on explosives or other materials, or the impact of 1kg~5kg objects on organic matter There is no effective test method for the harmful effects of accidents such as glass windows. At present, the usual pract...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome that there is no effective test method at present, and the impact test of a small mass projectile below 0.5kg at a speed higher than 80m / s or the impact test of a disposable mass of 5kg impactor at a speed of 8m / s or less is usually used. However, this type of test method can overcome the problem that the current test method cannot easily and efficiently evaluate the dangerous response of explosives with a predetermined configuration or a plexiglass window when an object with a mass of 1kg to 5kg is accidentally hit at a speed of 8m / s to 80m / s Defects, to provide a not only accurate positioning, simple steps, easy to operate, but also the impact body can be used repeatedly, can effectively test in the range of 8m / s ~ 80m / s speed (instant speed 28.8km ~ 288km), 1kg ~ 5kg weight It is an aerodynamic accelerated impact test method that can effectively test the harmful effects of unexpected events such as 5kg objects hitting plexiglass windows or other materials.

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