## 3 Results and Discussion
### Fragmentation Resistance Test Results
At the fourth stage, the crater shrinks under the influence of recrystallisation and annealing of the armor material. In addition, the mechanism of destruction of ceramic elements due to the impact of small arms ammunition was the subject of the work of [PERSON] et al. [64] and [PERSON] et al. [65]. An analogous role as presented in the above mentioned publications is played by the ceramic layer of the obtained silicon-ceramic composite. By crushing the hexagonal elements of Al\({}_{2}\)O\({}_{3}\) ceramics, the fragment is blunted and some of its energy is absorbed due to the fracture of the hexagonal Al\({}_{2}\)O\({}_{3}\) fittings. The outer silicone layer makes a small contribution to the fragment retention mechanism, as shown by the tests. It acts as a matrix in which the ceramic elements are placed and enables the composite system to fit the user's body, which increases the ergonomic properties of the cover. The research also compared the value of V50 ballistic protection limit obtained for FSP.22 fragment, for HSC composites with ballistic plates manufactured from \"traditional\" materials, i.e., hard ballistic armor manufactured in the process of thermal-pressure pressing from Twaron(r)CT736 (Teijin, Germany), metal plates (steel and Ti-6 Al-4V alloy) and ballistic hybrid plates manufactured by combining ballistic plates manufactured in the process of thermal-pressure pressing from Twaron(r)CT736 with ceramic elements or Ti-6 Al-4V alloy. It should be noted that each of the above mentioned ballistic systems was placed on a soft ballistic insert made of Twaron(r)CT612 aramid with a surface mass of \((5.0\pm 0.5)\) kg/m\({}^{2}\). The results are presented in Figure 6.  
It has been shown that soft ballistic packets with a surface mass (\(5.0\pm 0.5\)) kg/m\({}^{2}\) obtained from aramid materials such as Twaron(r)CT709, CT612, or CT608 exhibit a fragmentation resistance of \((600\pm 25)\) m/s. Retrofitting soft inserts with plates obtained from Twaron(r)CT736 aramid pre-impregnate in the process of thermo-pressure pressing increases resistance to FSP.22 fragment from (600 \(\pm\) 25) m/s to 800-1100 m/s depending on the surface mass of the tested system. Ballistic systems obtained on the basis of hybrid composites produced by combining plates obtained in the process of thermal-pressure pressing with Twaron(r)CT736 with ceramic elements or Ti-6 Al-4V alloy were characterized by the highest V50 values and at the same time the highest surface mass. In this case, the resistance to FSP.22 fragment was 1580-1850 m/s. At the same time, it can be pointed out that the developed hybrid silicone-ceramic composites containing Al\({}_{2}\)O\({}_{3}\) ceramic elements of thickness (3.5 \(\pm\) 0.2) mm have mass per unit area comparable to a ballistic system containing steel or titanium ballistic plates at a V50 value higher by about 10%. On the basis of Figure 6, it can also be determined that the obtained HSC composites containing Al\({}_{2}\)O\({}_{3}\) ceramic elements with thickness (3.0 \(\pm\) 0.2) mm and mass per unit area within the limits (21.0 \(\pm\) 0.5) kg/m\({}^{2}\) are characterized by higher values of ballistic protection limit V50 by about 17% in comparison to systems based on pressed Twaron(r)CT736 plates with comparable mass per unit area. Thus, the conducted tests indicate that the developed hybrid silicone-ceramic composites are characterized by higher V50 parameter values for the FSP.22 fragment compared to the currently used, traditional, ballistic hard plates of comparable mass per unit area. In addition, the obtained experimental data were also compared with the literature. For example, fragmentation tests performed by [PERSON] and [PERSON]'s [66] showed that laminates made using nylon 6.6 plain woven fabric and laminated with a matrix of ethylene vinyl acetate results in V50 values for 1.1 g FSPs fragment in the range of 322 to 486 m/s (depending on the number of layers of the laminate).