Composition and classification of Ballistic vest

The bulletproof layer of a Ballistic vest can absorb the kinetic energy of bullets or shrapnel, has an obvious protective effect on low-velocity bullets or shrapnel, and can reduce the damage to the human chest and abdomen under certain depression conditions. Ballistic vest includes infantry body armor, flight personnel body armor, and artillery body armor. According to appearance, it can also be divided into bulletproof vests, full protection bulletproof vests, women's bulletproof vests, and other types.

Here is the content list:

• Composition of Ballistic vest

• Classification of Ballistic vest

Composition of Ballistic vest

A ballistic vest is mainly composed of a clothing cover, bulletproof layer, cushioning layer, and bulletproof insert plate.

Clothing covers are generally made of chemical fiber fabrics or wool cotton fabrics, which protect the bulletproof layer and make the appearance beautiful. Some hoods have several pockets for carrying ammunition and other supplies. The bulletproof layer is usually made of single or composite materials such as metal, aramid fiber (Kevlar fiber), high-strength and high-modulus polyethylene, polyimide fiber (PI fiber), etc. Bullet or explosive fragments.

The buffer layer is used to dissipate impact kinetic energy and reduce non-penetrating damage. It is usually made of closed-cell knitted composite cloth, soft polyurethane foam, and other materials.

The bulletproof plate is a kind of plate that the Ballistic vest enhances the protection ability of the bulletproof layer. It is mainly used to protect against the penetration of rifle direct bullets and high-speed small fragments.

Classification of Ballistic vest

According to the structural material, the Ballistic vest is divided into

 ①Soft body armor. The bulletproof layer is generally made of multi-layer high-strength and high-modulus fiber fabrics plus seams or direct lamination. When bullets and fragments penetrate the bulletproof layer, directional shear, tensile damage, and delamination damage are generated to consume its energy. 

②Hard body armor. The bulletproof layer is usually made of metal materials, high-strength and high-modulus fiber laminates made of resin-based composite materials heated and pressed, bulletproof ceramics, and high-strength and high-modulus fiber composite boards. The bullet-proof layer of metal material mainly consumes the energy of the projectile through the deformation and fragmentation of the metal material. The ballistic layer of high-strength and high-modulus fiber ballistic laminates dissipates the energy of the ballistic body through delamination, plugging, resin matrix rupture, fiber extraction, and fracture. The bulletproof layer adopts bulletproof ceramics and high-strength and high-modulus fiber composite board. When the high-speed projectile collides with the ceramic layer, the ceramic layer breaks or cracks and spreads around the center of the impact point to consume most of the energy of the projectile. The modulus fiber composite board further consumes the remaining energy of the projectile. 

③Soft and hard composite body armor. The surface layer is made of hard bulletproof material, and the inner lining is made of soft bulletproof material. When the bullets and fragments hit the surface layer of the body armor, the bullets, fragments, and the hard material of the surface layer are deformed or broken, consuming most of the energy of the bullets and fragments. The soft lining material absorbs and diffuses the energy of bullets and remaining fragments, and plays the role of cushioning and reducing non-penetrating damage.

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