
THE DETERMINATION OF CHARACTERISTICS OF TEMPORAL PULSATING CAVITY WITH GUNSHOTS FIRED FROM FORT-12 GUN
Author(s) -
V. V. Shcherbak
Publication year - 2016
Publication title -
teorìâ ta praktika sudovoï ekspertizi ì krimìnalìstiki
Language(s) - English
Resource type - Journals
eISSN - 2708-5171
pISSN - 1993-0917
DOI - 10.32353/khrife.2015.49
Subject(s) - projectile , ammunition , scanner , caliber , materials science , optics , physics , metallurgy
The article presents the analysis of morphological peculiarities of temporal pulsating cavity under the experiment conditions using ballistic gel. In the course of the experiment there was used Fort-12 gun and standard ammunition of 9*18 mm caliber. A 250 Bloom ballistic gel (recommended by the leading researchers) was chosen as a simulator. The preparation of gel blocks was conducted using a classical methods suggested by Fackler and Malinowski, the concentration is 10 %, cooled down to the temperature of 4 °C (the exposition time is 48 hours). The visualization of a wound tract and cracks in gel left by the gunshot projectile and liquidation of the temporary pulsating cavity was conducted with the use of a contrasting water-soluble dye. After that the blocks were photographed and cut across the wound tract into plates of 1 cm width. Each section was scanned individually with the use of a flatbed scanner. In order to evaluate the damaging effect of the wounding projectile there are used standard calculation methods: Fackler’s wound profile (WP), the total crack length method (TCL), the polygonprocedure (PP).