Jichang New Materials
Bulletproof glass function and principle
2023-12-07
Author:
Function
For example, the use of some bank bulletproof cars promoted the invention of one-way bulletproof glass. This glass will resist the outer side of the glass against the ensuing small arms fire, but will allow shooting on the opposite side (inside) of the glass, such as the defender shooting from the inside of a bulletproof car, thus shooting through the glass on the external threat.
Principle
One-way bulletproof glass is usually made in two layers: a fragile layer on the outside and a flexible layer on the inside. When a bullet is fired from the outside, the bullet will hit the fragile layer first and break an area. This will absorb some of the bullet's kinetic energy and spread it over a larger area. When the slowed bullet hits the pliable layer, it is blocked. However, when the bullet is fired from the inside, it hits the pliable layer first. The bullet can penetrate the flexible layer because its energy is concentrated in a small area. The brittle layer breaks outward when the flexible layer bounces outward, and it does not hinder the progress of the bullet.
Bulletproof glass is a glass that has the ability to protect bullets while having the light transmission and image transmission properties of glass. The bulletproof principle of bulletproof glass is that it can convert the impact kinetic energy of the bullet into the elastic potential energy of the glass and the surface energy of the fragments.
MESSAGE