The processes of consolidation and synthesis under quasihydrostatic high pressure (at 2 GPa) and hot pressing (at 30 MPa) materials based on α-AlB12, AlB12C2, B4C and SiC were investigated. The influence of additives C, TiC and SiC on the structure and properties of boron-based composites, as well as the peculiarities of their destruction under shock loading, were studied. Systematic study of sintering processes and formation of structures at 30 MPa at 1800-2280 оС and 2 GPa at 1200-1400 оС and correlation dependencies between structure features, manufacturing conditions and mechanical characteristics allowed to develop new lightweight composite materials with high level of mechanical and impact-resistant properties. α-AlB12, AlB12C2, B4C, B4C-SiC, self bonded SiC. Computer simulation of the process of dynamic penetration of steel cores of armor-piercing bullets into solid and discrete ceramic elements of shock-resistant barrier based on self-bonded SiC with kevlar support made it possible to analyze the kinetic parameters of the process of penetration of armor-piercing bullets and to estimate the energy intensity of certain stages of the process of breaking through a ceramic-composite barrier. The data obtained can be used to optimize the geometric parameters of discrete SiC-based elements and to predict their impact resistance when colliding with armor-piercing rods of different materials over a wide range of kinetic energies. The ultimate goal of computer simulation research is the development of structures of ceramic-composite armored construction with discrete ceramic armored units to counteract bullets and to protect against ballistic damages.
The investigations were performed in the frames of the Projects NATO SPS G5773; 03-03-20 of Ukrainian-Belorussian cooperation and National Acad. Sci. of Ukraine; Contract No. ISM-29/20 (II-5-19), Projects III-3-20 (0779) and III-5-19 (0778) supported by the National Academy of Sciences of Ukraine.
2021-04-07 08:00:00
