Bulletproofing

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Bulletproof is the process of making something capable of stopping such high-speed bullets or projectiles, e.g. shrapnel. The term bullet resistance is often preferred because few, if any, practical materials provide complete protection against all types of bullets, or multiple clicks in the same location.

Video Bulletproofing

Origins

In 1887, Dr. George E. Goodfellow of Tombstone, Arizona Territory, documents three cases in which bullets have failed to penetrate silk garments. He described the death of Charlie Storms shooting by gambler Luke Short. Despite being shot in the heart, "not a drop of blood" came out of Charlie Storms wound. Goodfellow found that the bullet did kill Charlie Storms, failed through a silk handkerchief, basically catching a bullet, but that was not enough to stop the bullet completely. Another is the murder of Billy Grounds by City Assistant Marshal Billy Breakenridge. Goodfellow checks Billy and discovers that the two grains got through Billy's thick Mexican hat hat embroidered with silver wire, pierced his head and flattened it into the posterior wall of the skull. One more grain had passed two thick wool shirts and a layered canvas coat and vest before coming to rest deeply on his chest. But Goodfellow was fascinated to find in the folds of Chinese silk scarves around the Grounds neck two bullet rifles but no holes and no cuts. And he described the wound on Curly Bill Brocius who was shot on the right side of his neck, almost losing his carotid artery. A portion of the silk neckerchief was brought to the wound by a bullet, preventing a more serious injury, but the scarf was not damaged. The Tombstone Epitaph reported, "The silk armor is probably the next discovery."

Goodfellow writes articles for Southern California Practitioners entitled "Notes on the Liberation of Silk to Bullets". He experimented with designs for bulletproof clothing made of several layers of silk. In 1900, gangsters wore silk vests for $ 800 to protect themselves.

Maps Bulletproofing

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Bullet-proof body armor has been in use since about 1984. When law enforcement began wearing body armor, there was a dramatic drop in officer deaths, saving more than 3,000 lives as a result. The National Justice Institution first developed standards for ballistic resistant body protectors in the 1970s. Standards have been revised five times since 1984. The National Center for Law Enforcement and Corrections examines body armor to assess compliance with standards and publish results.

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Usage

The bullet design varies greatly, not only according to the particular firearms used (eg the 9.5-19mm hollowpoint caliber cartridge the Parabellum handgun will have a lower penetration power compared to the 7.62 Ã- -39mm rifle rifle) but also in the design each cartridge. As a result, while the so-called "bullet-proof" panels may successfully prevent penetration by standard 7.62 × 39mm bullets containing lead cores, the same panel can easily be defeated by 7.62 × 39mm armor-piercing bullets containing hardened steel penetration.

Bulletproof material (also called ballistic material or, in other words, anti-ballistic material ) is usually stiff, but may be supple. They may be complex, such as Kevlar, UHMWPE, Lexan, or carbon fiber composite materials, or they may be basic and simple, such as steel or titanium. Bulletproof materials are often used in law enforcement and military applications, to protect personnel from death or serious injury.

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Classification

There are various mandatory tests that the goods must pass before they can be classified as bullet resistant. These tests determine the detailed characteristics of a bullet that the material or object must withstand. For example, the US National Institute of Justice 0104.04 standard for bulletproof vests specifies that Type II vests should not damage the clay that represents the wearer's body when struck by a 8.0 g (124 gr) full-metal full-metal jacket traveling up to 358 m/s (1175 ft/s); but Type IIIA vests are required for protection against the same bullets that move up to 427 m/s (1400 ft/s). In both cases, the vest is not required to protect from the second attack within 51 mm (2 inches) from the first.

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Apps

• Outer Space
• Armored car
• Armored fighting vehicles
• Banks warehouse
• Bombsuit
• Bulletproof glass
• Bulletproof vest
• Liquid Armor
• Military vehicles
• Room panic
• Plastic armor
• The anti-riot shield
• Safe

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References

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External links

Source of the article : Wikipedia