How does Kevlar body armor stop bullets?

Kevlar is a strong, lightweight material that was originally developed by DuPont in the 1960s. It is now commonly used in a variety of applications, including bulletproof vests.

When a bullet hits Kevlar, it causes the fibers to deform and interlock. This process spreads the force of the impact over a larger area. The energy from the impact is spread out over a large area. This prevents the bullet from penetrating the vest and harming the wearer. Instead, the Kevlar fibers absorb the energy and stop the bullet.

While Kevlar can provide excellent protection against most types of bullets, it is not completely impenetrable. In particular, armor-piercing bullets are designed to penetrate Kevlar vests, so they should be avoided if possible.

As a result, Kevlar body armor provides an effective way to protect people from bullets and other sharp objects.