Clay armor

Recently time one of the global trends in the booking of equipment is the introduction of so-called clay armor that has the least weight in comparison with metal, just with this, not yielding to the strength of steel armor, and in what or even surpassing it. Go with this shortcomings such armor recognize its highest price in comparison with steel armor. The use of clay armor can achieve greater payload on the chassis of armored vehicles by reducing the weight of the reservation, while increasing the price of all this end military equipment.

Go with this, there are other problems. Clay tile dissipates energy bullet or projectile by the entire area of its own, breaking with all this, and if it enters into compounds are destroyed and the adjacent tiles. All this leads to a decrease in the protective area that decreases accordingly area warped a clay slabs. At the current time, the main problem of such protection is that a clay plate is unable to withstand countless hits, also do not apply to conduct repairs in the criteria of the military operation. Small distance between hits without breaking must be sufficiently high. With all of this when exposed to such armor improvised explosive devices tile can not cope, because the blast damages a lot of plates in the rigid panel and may subject the crew to projections in an unprotected area. The remaining tiles can become loose or fall out with just the module.

Lockheed Martin UK is working on a clay armor resistant to repeated stepping on

The creation of new means of improving lung samples survivability and protection of armored vehicles used in combat criteria and the army special forces in England, has received a new impetus. The company Lockheed Martin UK works closely with engineers from the Institute of Surrey issledovateleyami to designate the clay armor durability through repeated hits. A clay material that the current time is increasingly a substitute in the armor of steel, perfectly protect crew and equipment from the consequences of defeat. This armor very resistant to penetration by different armor-piercing means being together with this also lighter, compared with the usual armor.

But the problem that is facing producers clay armor, lies in the fact that the merits of an overvalued level of protection and lower weight are balanced and shortcomings that are associated with attaching a clay armor plates, in order to associate them with the substrate. Such a method of attachment allows in case of contact with the clay armor dye it piecemeal, making it the least reliable, in comparison with the classic iron armor. Especially in the case of protection of armored targets of repeated hits. Therefore, in order to make a reliable clay armor heavier than it has to do, and this is leading to a lowering of its benefits.

At the same time, scientists from the Institute of Surrey made a method of treating the surface of the clay armor, in order to make the best strength of a clay composite material as silicon carbide and aluminum oxide. This development is in a position to increase the reliability of this kind of armor in combat criteria. "However, despite the fact that the clay armor has a number of advantages in comparison with other methods of protection, there are still some problems, "said Dr. Andrew Harris — a research engineer at the Institute of Surrey.

At the same time scholar has noted the fact that the case is closely with Lockheed Martin have allowed them to make a method of processing an earthen materials, leading to the improvement of the efficiency of such equipment. It is reported that the key to increase the features that have been proven tests, preconditioning has a clay slab, before fixing on the substrate.

With all this weight reduction is for modern armored army more fundamental requirement because it allows to provide frisky development units in more regions of conflict, said Steve Burneydzh chief designer of Lockheed Martin UK. The tests show that the surface treatment with silicon carbide and aluminum oxide can improve the strength of bonds. The tests showed that in the case of firing the 14.5-mm armor-piercing incendiary ammunition damage the iron bar under a clay armor did not work and after repeated close contact. At the current time commissioning a similar armor is only a matter of time not only for armored targets, and for the body armor.

In addition to use in the military sphere in the proposed technology there is potential in other areas, such as in space, where ceramic tiles are used to protect ton of negative consequences are manifested in their return to the atmosphere. To continue work in this area Lockheed Martin UK is going to the English center (LCN) in the institute Institute of London (UCL).

Tests clay armor

Russian development

It should be noted that our homeland — one of the first in the world still in the middle of the 1970s, started to conduct periodic studies on bronekeramike. Then, in the course of the experiments and tests with a variety of metal-ceramic and clay materials experts at Russian concluded that due to technological and physical-mechanical properties more promising in the practical application submitted silicon carbide, corundum ceramics and karbidobornaya.

In fairness it should be noted that the silicon carbide and alumina ceramics Russian gains were fairly mild. In 1980, the Research Institute of Steel has worked in the experimental plan (as a counterweight to the British armor "chobhem") protection head-on units and parts of tanks. But it almost immediately made obsolete the emergence of dynamic protection. By the same questions that were related to the structural survivability clay armor, were still not fully resolved. At the same time, for light combat vehicles and personal protective equipment (PPE) is the relevance of clay armor is not only not diminished, and in a number of circumstances, even increased, because research in this field are carried out virtually all of the creators of "light armor." Unfortunately, in our country, called perestroika, it threw back our industry. In terms of improvement and production of Russian armor ceramics we were brought back to the level of approximately 70 years.

At the same time, the requirements are now the main customers (Interior Ministry, the Federal Security Service, the Ministry of Defense), quite clearly shows us that the development of lung bronestruktur funds for personal body armor (NIB) high levels, such as 5-6a, it is not feasible without the introduction of clay armor. With all of this remains the essential requirements of law enforcers drop weight armor. For the creators of the IRB are even tougher than the developer of armored vehicles. Because developers NIB choose lighter materials — boron carbide and silicon carbide.

The upcoming features also improve the clay armor for combat vehicles should be carried out by the subsequent fronts. First — is to increase property bronekeramiki. The last 2-3 years at the Research Institute of Steel quite closely cooperate with Russian manufacturers bronekeramiki — JSC "Aloxe", JSC "NEVZ-Soyuz", LLC "VIRIAL" on the mining and improve the properties of clay armor. Joint efforts could significantly improve quality and bring it to the level of Western models.

Armored Car "Typhoon" with a combined armored

Second — is working out the best design solutions. It is clear that clay slabs own special zones around their compounds, the data area is reduced bal
listic properties of armor. In order to level the parameters of panels created by an earthen structure so called "profiled" broneplitki. These panels, for example, are mounted on the car, "The Punisher" and have already managed to successfully pass a series of preliminary tests. The weight is the protection class 6a was 60 pounds-force per 1 square. meter. In addition, the structures have been worked out on the basis of corundum with a substrate of aramid and UHMWPE with a weight of just 45 pounds-force per 1 square. meter panels for protection of the same class. But the introduction of such panels on military equipment is limited due to the presence of a number of additional requirements (for example, in the case of lateral resistance of undermining explosive device).

Third — for armored vehicles such as armored personnel carriers, or APCs, typically quite dense fire power of the enemy, for this reason, the maximum density of lesions, which are able to provide a clay armor plates, made on a "solid hotel" may prove inadequate. The solution to this problem is to apply a clay assemblies of discrete armor consisting of a cylindrical or hexagonal parts, proportionate means of destruction (fire control). Discrete armor assembly allows for the highest durability of composite armor panels, the maximum density of lesions which tightly close to the same value for bronekonstruktsy of metal.

With all this new weight properties of discrete bronekonstruktsy a clay having a metal base or duralumin broneliste 5-10% greater than the mass of a clay panels having a solid build. But the advantage of a clay discrete panels is no longer needed in its bonding to the substrate. These armor plates have been installed and tested in the most experienced swatches BMD-4 and BRDM-3. At the current time, these panels are used in step OCD Project "Boomerang" and "Typhoon".

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