I don't understand what your asking but, kevlar body armor is an example of a layered fiber that catches the bullet while dissapating its energy, if that's what your asking.
KEVLAR! KEVLAR!
no piranhas can not bite through kevlar body armor at all do not try it
Body armor is made of Kevlar.
The protective plates, depending on the age of it, will be steel, ceramics, or kevlar.
The most common brand of body armour by far is Kevlar.
Vehicle body panels, hoses, belts, gaskets, tires, clutches, brake pads, & body armor for vehicles can all be made of Kevlar.
There's no such thing as a good metal for body armor. Kevlar is best.
maybe if you fire it hard enough
Kevlar is a very strong man made fiber. Although flexible it is stronger than steel. It is one of several fibers used to make (among other things) body armor. Strong, lightweight, and flexible.
Body armor has been around for centuries, with some of the earliest examples believed to have been made by the ancient Greeks and Romans. Modern body armor has evolved and is now made by various manufacturers using materials such as Kevlar, ceramic plates, and other advanced materials to provide protection against ballistic threats.
Kevlar was developed by a Polish-American scientist named Stephanie Kwolek at DuPont in 1965. In the 1970's it replaced steel in racing tires. Today it is used in many things such as, tires, racing sails, and body armor.
The full body type armor for knights fell out of general use long before the 1900s, but some European heavy cavalry units continued to use breast and back plates into the early 1900s. If you image-google "WW1 body armor", you'll see some examples. Soldiers and policeman still wear helmets and body armor like bulletproof kevlar vests.