Ceramic/composite material interlayer protecting structure

A technology of protective structure and composite material, applied in ceramic layered products, armor plate structure, synthetic resin layered products, etc., can solve the problems of reducing the protection coefficient of the protective structure, increasing the surface density of the overall protective structure, etc., so as to improve the ballistic trajectory. Ultimate speed, areal density reduction, effects of high compressive strength

Inactive Publication Date: 2010-02-17
HARBIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the existing ceramic / composite material protective structure is that since the composite material backplane needs to provide rigid support to the ceramic panel to fully exert the anti-ballistic effect of the ceramic panel, and to provide sufficient rigid support requires the backplane to have sufficient thickness
The increase in the thickness of the backplane increases the surface density of the backplane used, that is, increases the surface density of the overall protective structure, thereby reducing the protection factor of the protective structure

Method used

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  • Ceramic/composite material interlayer protecting structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] According to the concept of the present invention, the thickness of the panel is 8mm, the material is hot-pressed sintered boron carbide, the thickness of the composite material plate is 5mm, the material is aramid fiber composite material, the thickness of the aluminum foam core is 6mm, the aperture is 4mm, and the porosity is 90%. The impact test shows that the structure can resist the penetration of 12.7mm caliber steel core warheads. Compared with the existing ceramic / composite material structure, the surface density of the protection structure prepared by the invention is reduced by 14% under the same protection level.

Embodiment 2

[0020] According to the concept of the present invention, the thickness of the panel is 10mm, the material is hot-pressed sintered alumina, the thickness of the composite material plate is 5mm, the material is glass fiber composite material, the thickness of the aluminum foam core is 6mm, the aperture is 4mm, and the porosity is 80%. The impact test shows that the structure can resist the penetration of 12.7mm caliber steel core warheads. Compared with the existing ceramic / composite material structure, the surface density of the protection structure prepared by the invention is reduced by 10% under the same protection level.

Embodiment 3

[0022] According to the concept of the present invention, the thickness of the panel is 5mm, the material is hot-pressed sintered boron carbide, the thickness of the composite material plate is 3mm, the material is aramid fiber composite material, the thickness of the aluminum foam core is 4mm, the aperture is 2mm, and the porosity is 80%. The projectile test shows that the structure can resist the penetration of 7.62mm caliber steel core warhead. Compared with the existing ceramic / composite material structure, the surface density of the protection structure prepared by the invention is reduced by 12% under the same protection level.

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Abstract

The invention belongs to a design technology of protecting structures and relates to an improved /composite material protecting structure, which comprises a ceramic panel (1) and a rear panel bonded with the ceramic panel (1). The ceramic/composite material interlayer protecting structure is characterized in that the rear panel is an interlayer panel which comprises two fiber reinforced resin base composite material plates (2) and a foam aluminum plate (3) clamped between the two fiber reinforced resin base composite material plates, and the fiber reinforced resin base composite material plates (2) and the foam aluminum plate (3) are formed into the interlayer plate bonded by plate cores. The interlayer structural rear panel provides support with greater rigidity for the ceramic panel under the condition of same planar density and fully plays a role of high compression strength of ceramic materials. Closed cell aluminum in the interlayer structure can also delay the transmission of shock waves along the thickness direction when a bullet is shocked, delays the damage of the shock waves to the ceramic panel, and improves the ballistic curve limit speed of an integral protecting structure.

Description

technical field [0001] The invention belongs to the protection structure design technology and relates to the improvement of the ceramic / composite material protection structure. Background technique [0002] The existing ceramic / composite material protective structure adopts a structure with ceramics as the face plate and resin matrix composite material as the back plate. The characteristic of this structure is that it can give full play to the respective advantages of ceramic materials and composite materials. When the projectile penetrates the armor, it first hits the ceramic panel, and uses the high hardness, high modulus, and high compressive strength of the ceramic to passivate and destroy the projectile, reducing the speed of the projectile and increasing the interaction between the projectile and the back plate At the same time, the broken ceramics and the projectile wear each other to prevent further penetration of the projectile. These mechanisms consume most of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F41H5/04B32B15/08B32B27/04B32B18/00
Inventor 张剑光马德权宫少波温永海齐德胜
Owner HARBIN
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