Composite protection plate with non-equal-diameter ceramic balls and application and manufacturing method

Abstract

The invention discloses a composite protection plate with non-equal-diameter ceramic balls. The composite protection plate comprises panels arranged up and down and a whole core material made of a polymer viscoelastic material, wherein the space between the panels is filled with the core material. At least two layers of the ceramic balls are coated in the core material, the adjacent layers of theceramic balls are arranged in a staggered manner, and the diameters of the ceramic balls on the same layer are the same. The ceramic balls with at least two different diameters are arranged in the core material, and the ceramic balls which resist penetration first are large-diameter ceramic balls. The ceramic balls with different diameters are arranged in the protection plate in a staggered manner, and it is ensured that deflection can be realized when a projectile body penetrates at any angle. The ceramic balls with different diameters are arranged in the protection plate, and after the projectile body performs hitting, the ceramic balls rapidly transmit impact force to the surrounding ceramic balls, so that the whole protection structure plate is driven to participate in resisting the impact of the projectile body, and the integral performance of the whole plate participating in penetration resistance is obviously improved.

Description

technical field [0001] The invention relates to a protective plate suitable for armor protection and ship building, in particular to a composite protective plate with non-equal-diameter ceramic balls and its application and manufacturing method. Background technique [0002] Over the past century, military and civilian engineers have carried out a lot of research on high-speed penetration phenomena. Engineers engaged in armor protection research have tried every means to reduce the damage of the protected structure and resist the penetration of high-speed projectiles. With the continuous development of science, the impact resistance of some traditional materials is far from meeting the required requirements. Therefore, various new composite materials have emerged, and composite protective panels are one of them. [0003] The existing methods to improve the anti-penetration performance of protective structures mainly include the following three methods: [0004] 1. Resist th...

AI Technical Summary

Problems solved by technology

[0004] 1. Resist the impact of projectiles through high-strength panels. For example, patent CN201510104925.5 discloses a steel plate for high-elasticity armor and its manufacturing method. It improves the hardness of the armor plate by changing the chemical composition, thereby improving its penetration resistance ; but at the same time there are problems such as the armor plate is too heavy

[0005] 2. Utilizing the principle of energy absorption, by setting an energy-absorbing layer of polymer elastomer material in the middle layer of the sandwich panel, the projectile hits the sandwich panel, and at this time, the deformation of the energy-absorbing layer can effectively absorb the energy generated by the impact; for example, the sandwich panel is made of polymer polymer The buffer layer between the vinyl plates absorbs the energy generated by the impact, and is manufactured by bonding between the plates. After the high-speed projectile invades, shock waves, transmitted waves, and reflected wave energies are generated. The sandwich plates usually cause delamination and panel shedding, etc. Although the above damage process can dissipate more energy, its disadvantage is that the integrity of the structure is severely damaged, resulting in a sharp decline or even loss of the ability to resist the second blow

[0006] 3. Adding a protective layer of high-hardness ceramic material, such as setting the ceramic sheet on the outer layer of the protective structure, can use the high hardness of the ceramic itself to abrade the projectile, and even force the projectile to break, so as to achieve a good protective effect. After the projectile penetrates, the ceramics are easily broken and splashed. On the one hand, it is easy to cause secondary damage, and on the other hand, there is also the problem that it cannot withstand the secondary blow.

In addition, in the prior art, there is a new type of armor plate using 6061 aluminum alloy to constrain Al2O3 ceramic ball composite material, and the metal matrix is ​​used to constrain the ceramic ball, which fully exerts the advantages of high hardness and high temperature resistance of the ceramic material, but its toughness is insufficient, and it also exists the same as the aforementioned Similar problems with ceramic chips

[0007] To sum up, although there are many types of structures and functions of the current protective plate, there are still problems such as the heavy protective structure body and the weak ability to resist the second blow.

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