What is the bulletproof principle of ceramic materials?
The basic principle of armor protection is to consume the warhead, decompose the projectile and render it harmless. Similar to traditional engineering materials, metal materials absorb energy through plastic deformation of the structure, while ceramic materials absorb energy through micro-decomposition processes. The energy absorption process of bulletproof ceramics can be roughly divided into three stages:
Final initiation stage:
The projectile impacts the ceramic surface, which blunts the projectile and absorbs energy in the process of forming a small and broken fragment area on the ceramic surface;
Overview stage:
The blunted projectile as a whole continues into the fragmentation block area, forming a continuous layer of ceramic fragments;
Deformation, gap and fracture stages:
Finally, tensile stress is generated in the ceramic, causing the ceramic to fracture, and then the back plate deforms. All the remaining energy is absorbed by the deformation of the back plate material. During the process of the projectile impacting the ceramic, both the projectile and the ceramic are damaged.
The most common bulletproof: Bulletproof material queue, the most commonly used ones include chassis, silicon carbide, boron carbide, low carbon ceramics, ceramic titanium boride, etc., among which ceramics (Al2O3) and silicon carbide ceramics (SiC) are the main ones ) and boron carbide ceramics (B4C) are the most widely used.