Views:0 Author:Site Editor Publish Time: 2020-01-22 Origin:Site
bulletproof vests play an important role in the performance of police officers, but many people have misunderstandings and doubts about bullet-proof vests. Is it hurt to wear a bulletproof vest? How many times can a bullet-proof body resist the shooting of a bullet?
How many grades are bulletproof vests?
Can you avoid injuries when wearing bulletproof vests?
When does the bulletproof vest need to be replaced?
Let us discuss the different levels of protection offered by various types of bulletproof vests and how many times they can be fired before they stop providing an acceptable level of protection. In the United States, most of the body armor rankings are based on standards set by the National Institute of Justice (NIJ), and their grades are considered global gold in terms of the ballistic protection offered by a given bullet-proof vest. standard. As for these levels, the NIJ assigns a common level between 1 and 4 for all armor. In the most basic sense, the higher the level of armor, the more protection it provides. For example, any level between 1 and 3a will prevent bullets from being fired by most pistols. For the sake of comfort, these levels of body armor are usually made of a soft fiber material, such as Kevlar, although higher levels of body armor may use other materials. In extreme cases, the four-level armor is the only armor that can prevent armor-piercing armor, usually made of a hard material, sometimes reinforced with a soft material such as Kevlar.
It is worth mentioning that although the NIJ maintains various armor under the same standards, a distinction is made between the "hard" and "soft" types. For those unfamiliar with these terms, "soft" bullet-proof vest is usually made by weaving super-strong fibers in a mesh pattern that can slow down like a bullet and block certain objects (such as Baseball, in which the force is distributed to a larger area. On the other hand, "hard" body armor is usually created by inserting a solid plate of ceramic or special plastic into a vest or other outer casing.
Although hard armor usually provides more protection than soft armor, it has its own drawbacks and needs to be considered. For example, ceramic armor plates are usually only designed to protect the heart and the area around the lungs because operability is hindered if they cover other areas, and they are relatively heavy (using 10 x 12 inch steel plates) usually Weighing about 7 or 8 pounds. Therefore, even if only the heart and lung areas are protected, the total weight of the front and rear panels is about 15 pounds or 7 kilograms.
In some cases, police officers, military personnel, and federal personnel wear bulletproof vests. Most bulletproof vests are not 100% bulletproof, but do a good job of preventing most bullets from penetrating the vest and hurting the vest. However, despite the excellent protection of the vest, people are still injured when wearing a vest.
In fact, bulletproof vests are not completely bulletproof. Instead, they work by quickly dissipating the energy in the bullet. This energy must still be scattered somewhere and may cause harm to people wearing vests. However, the dissipation of energy prevents the bullet from stabbing into the target with lethal force. This is possible due to the way the aramid fibers are bonded together. Fine fibers are difficult to stretch. The fiber absorbs most of the force of the bullet, otherwise these forces will propagate directly into the target.
The first effect of being shot when wearing a vest will be a strong backward force that may cause the person who receives the shot to fall. Even if the force dissipates, it is still a very high-speed force that basically hits the person's chest. The size of the force depends on many factors, such as the distance from the person who shot the person, the size of the weapon, and the type of ammunition used.
Minor damage is caused by the remaining force after the initial shot. According to the Akron Police Department and the Akron General Medical Center, if a vest is rated as a bullet type, 85% of those shot in the vest area will be slightly injured or not injured. Smaller wounds include bruises and minor damage to the surface of the skin. Even in people wearing appropriate grade vests, moderate injuries sometimes occur and may include rib rupture.
Often, when a person hitting a vest is hit by a bullet, it can cause serious damage, and the strength of the bullet is much stronger than that designed by the vest. Most vests are designed to prevent pistol shooting. High-powered rifles shoot the projectile even with a much larger pistol. Shooting with this gun may pierce the vest and cause fatal injuries.
In the end, it all made us understand how many bullets a bullet-proof vest can absorb before it is useless. Ok, as you might imagine, there are many different types of bullet-proof vests there, depending on. For example, at the very end, we found that some manufacturers claim that their Class III body armor can perform hundreds of bullets before failure. For some general examples, we will start with soft armor. Once these are hit by bullets, the fibers around the impact zone are damaged, losing some of the ability to absorb and dissipate the energy of the bullet. Therefore, if another bullet hits a distance close to the first hit, the bullet is likely to penetrate, even if the vest is usually able to handle it well. Therefore, although in some cases they may be hit several times, they may even be rated according to the size of the bullets, the way the armor is manufactured, etc., but it is generally considered unreliable to rely on it.
Continue to use ceramic plate armor, which in most cases is designed to break when hit by a bullet, dissipating the impact by breaking the bullet so that smaller pieces can be supported by certain support materials (such as Kay Frahal) or some form of absorbent polymer or sometimes both. However, the side effect of this is that, similar to our previous example of using soft armor, most of the plates were completely useless during the second shot. That is to say, some types of ceramic armor are designed to require multiple shots, and nothing more, in most cases, it is not wise to rely on this. Of course, with armor piercing armor and Class IV ceramic armor, the NIJ only needs one shot to get this grade, which gives us access to the polyethylene armor coating. In this case, the impact of the bullet actually melts the plate and then hardens again, trapping the bullet therein. As a result, polyethylene armor can withstand multiple shots without losing its ballistic integrity, and we have found some examples of manufacturers claiming that their polyethylene armor can carry hundreds of bullets before failure. The advantage of the polyethylene sheet is that it weighs only half the weight of the ceramic at the same degree of protection.
Mixed body armor is also common at higher levels, which means that your mileage may vary depending on the given body armor. The NIJ rating provides a good overview of its capabilities, and the manufacturer's tests usually provide more How many rounds of a given type of bullet can be made before a failure.
All of this again illustrates that although a given body armor can pass the test, even if the manufacturer claims to prevent more of the situation, most manufacturers recommend replacing the body armor even with a single shot. Moreover, in addition to this, even in some cases, it is only necessary to land the armor on the floor. This is because although body armor is designed to stop bullets, some types are surprisingly fragile. For example, ceramic plates are easily broken when dropped, and sometimes broken in a manner that is invisible to the naked eye.
Continued use of soft body armor, somehow stretching or deforming the fiber (sometimes invisible to the naked eye) may also compromise its integrity. Some manufacturers even recommend that you wet the wet Kevlar bullet-proof vest because it will weaken the fiber, so it is recommended to replace it. It should be noted that because daily activities (sometimes harmless) sometimes damage bulletproof vests, the standards of the body armor industry (developed by NIJ) are also replaced at most once every 5 years, even if they have never been attacked. is also like this.
Although the technology for manufacturing bulletproof vests is constantly improving, it is best to replace the bullet-proof vests even with a single shot. SHANDONG HUIERDA TRADING CO., LTD can provide you with the perfect products if you need to order the bulletproof vest with excellent quality after strict testing.
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