A small bullet on the battlefield can cause fatal damage to soldiers, but fragile ceramics can block high-speed flying bullets. Where does its "power" come from? Next, let us walk into the world of bulletproof ceramics.

What is the bulletproof principle of ceramic materials?

The basic principle of armor protection is to dissipate the energy of the projectile, slow it down and render it harmless. Most traditional engineering materials, such as metal materials, absorb energy through plastic deformation of the structure, while ceramic materials absorb energy through the process of micro-fracture. The energy absorption process of bulletproof ceramics can be roughly divided into three stages:

Initial impact stage: The projectile hits the ceramic surface, dulling the bullet and absorbing energy as the ceramic surface shatters into small, hard fragments;

Erosion stage: the blunted projectile continues to erode the fragment area, forming a continuous layer of ceramic fragments. Deformation, crack and fracture stage.

Finally, tensile stress is generated in the ceramic to break the ceramic, and then the back plate is deformed, and the remaining energy is all absorbed by the deformation of the back plate material. When the projectile hits the ceramic, both the projectile and the ceramic are damaged.