Shock Wave Distribution in an Explosion of an Explosive Material with Plastic Filler
S. I. Gerasimov1,2,3,4, A. L. Mikhailov1,2,3, N. A. Trepalov1,2
1All-Russian Scientific Research Institute of Experimental Physics, Sarov, 607190 Russia
2Sarov State Institute of Physics and Technology, Sarov, 607186 Russia
3National Research Nuclear University “MEPhI”, Moscow, 115409 Russia
4Nizhny Novgorod State Technical University, Nizhny Novgorod, 603950 Russia
Keywords: высокоскоростная видеорегистрация, теневой фоновый метод, взрывной опыт, high-speed video detection, background oriented Schlieren method, explosive test
Abstract
This paper describes the measurement results for the shock wave propagation during an explosion of an explosive material with plastic filler. The detection was carried out with the help of high-speed analog and digital video cameras. The air shock wave was visualized by means of shadow photography in transmitted light in the region of separation from expanding explosion products and using a background oriented Schlieren method in the far region. The optical measurements of the air shock wave propagation were used to estimate a maximum pressure in the compression zone at different sections and compared with the data obtained by the pressure gauges. The calculated pressure peaks were in good agreement with the measured ones. The background oriented Schlieren method proved to be a useful tool easily introduced in usual large-scale polygon experiments.
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