About the Criteria for the Choice of Materials to Protect Against the Mechanical Dynamic Loading

Abstract

A criterion for the selection of materials to protect against the mechanical dynamic loading is proposed and substantiated. The mechanisms of the fracture of brittle ceramic materials that are widely used in structures that prevent penetration and are very common in practice are discussed. Unlike other estimates, the proposed formula is based on the physical principle of comparing the total energies of loading and obstacles, and is in good agreement with the experimental data.

Reaction–Diffusion Pathways for a Programmable Nanoscale Texture of the Diamond–SiC Composite

“…In the work of Shevchenko et al, the parameter characterizing the armor resistance of a material based on the speed of sound is discussed: K = l l steel = ρ steel · V steel 2 ρ cer · V cer 2 3 where l steel is the initial length of the steel impactor used to test the ceramics for armor resistance, l is the length of the impactor after interaction with the obstacle, V is the longitudinal speed of sound, ρ steel is the density of steel, and ρ cer is the density of ceramic.…”

“…To overcome this obstacle, composite materials can be used with diamond embedded in a ceramic matrix . Of particular interest are diamond–silicon carbide (SiC) composites because SiC possesses very high elastic modulus and other mechanical properties as well as a structural and chemical affinity to diamond, i.e., it forms a coherent interface with it. , Such a composite was synthesized by Shevchenko et al under the commercial name Ideal.…”

“…2 Of particular interest are diamond−silicon carbide (SiC) composites because SiC possesses very high elastic modulus and other mechanical properties as well as a structural and chemical affinity to diamond, i.e., it forms a coherent interface with it. 3,4 Such a composite was synthesized by Shevchenko et al 5 under the commercial name Ideal. Table 1 shows the physical and mechanical properties of the material used for ceramic armors.…”

“…In the work of Shevchenko et al, 5 the parameter characterizing the armor resistance of a material based on the speed of sound is discussed:…”