Kevlar is a very strong and lightweight synthetic yarn that is VERY tightly woven, layer upon layer, to form (among other things) bullet RESISTANT (not bullet PROOF) vests. The strength of the yarn and fabric, coupled with its flexibility makes an ideal soft, lightweight body armor, which absorbs rather than deflects bullets.
Body Armor - Is a a piece of clothing that is used to protect you from ballistic, spike or stab attacks. It is made of bullet/stab proof material and is engineered to absorb the energy generated by a bullet or knife thrust.
yes in some cases. the A-10 pilot sits inside a titanium armor plate "bathtub" while flying.
Not effective ones. Manganese steel plates were fitted to vests for some gun crews, but they were heavy, bulky and hard to produce. There were nylon "flak jackets" issued to some airmen and to other specialized soldiers, but they only stopped slow-moving shrapnel or spalling. The rifles of World War II were powerful enough to shoot through them. Ceramic and Kevlar vests were developed for helicopter crews in the Vietnam era (1970) but were not mass produced until the 1980's, when they began to be distributed to police officers.
The typical rifle bullet was .303 inch caliber. The same round was used in most of the light machine guns.
I suspect that your Winchester may have been used in Canada...hence the British proof marks? I suspect that your Winchester may have been used in Canada...hence the British proof marks?
The answer you're looking for is, they were both invented by women, however, Stephanie Kwolek, a scientist, didn't actually invent "the bullet proof vest," but instead, she invented Kevlar, a material used in bullet proof vests.
Kevlar was the principal fibre into the 1970s. There are several new ones, including Dyneema, Gold Flex and Spectra. For more information please see the wikipedia article about bullet proof vests.
It is used as a bullet-proof material and also, surprisingly, canoes.
I believe the answer you're looking for is, they were all invented by women, however, in the case of the bullet proof vest, a woman didn't actually invent the bullet proof vest. Stephanie Kwolek, a scientist for Dupont, devoloped Kevlar, a material used in bullet proof vests.
The primary material used in bulletproof vests is Kevlar in several layers. There are many types of bulletproof vests, many of which include special inserts. The actual construction of bulletproof vests and other bulletproof clothing (they make bulletproof suit coats even!) is not really different than making other clothing items, but they adhere to a higher level of quality during construction.
no acshally it is bullet pruff vests used to be made of whale shark skin
ruber and kelver the same material used for bullet-proof vests
Kevlar is a very strong man made fiber, stronger than many metals. It is used where very high tensile (pulling) strength is needed. Its most famous use may be for body armor, and for military helmets. It is also used to make cut resistant gloves for people that work with sharp items.
Stephanie Kwoleck discovered properties of polymers to enable her to develop the first liquid crystal polymer. Her discovery led to the devlopment of Kevlar aramid fibre, with its very light threads which are stronger than steel. This fibre has been used to build spacecraft and bullet-proof vests.
Polyethylene is commonly used in bulletproof vests due to its high strength and energy absorption properties. It is lightweight and flexible, making it comfortable for wearers while still providing effective protection against ballistic threats.
About 15 to 20 lbs, depending on the size and whether or not you have a steel shock plate in it. But don't worry, you'll get used to it.
Because a bullet-proof vest needs to be both flexible and solid at the same time - this is achieved by the chemical properties of the materials used in the construction of the vest.