Efekty uderzenia wybranych rodzajów pocisków w blachy stalowe

Abstract

Efficiency of a firearm depends on both ammunition and a type of a gun. Bullets differ in calibre and framework. The core of a bullet destructive impact is the way of energy transfers and its distribution in the material. It is also connected with the framework of bullets. The range of influence also depends on material features. This paper presents descriptions of conducted shooting experiments. Three types of guns and five types of bullets were used. Target plates made of steel (structural and tool) were used. Three states of hardening of the tool steel were applied – deliver, soft and post hardening states. The tests were focused on places of bullets’ impact. The bullets that have not been destroyed and the structure of nonused bullets were tested as well. Light microscopy and scanning electron microscopy (SEM) were used to test the structure and chemical composition of specimens. Geometric quantities were also examined. The results of the tests proved that the higher bullet impact resistance features the tool steel in the deliver state. Structural steel is weaker then tool steel in a soft state. Not only the energy but also the framework of a bullet had the influence on a rate of penetration of the materials.