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1. WO2020113328 - A REINFORCED ARMOR AND A PROCESS FOR REINFORCING AN ARMOR BY COMPOSITE LAYERING

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[ EN ]

CLAIMS

1. A reinforced armor, comprising:

a core structure having a strike face and a back face;

a first composite fiber laminate, comprising a first plurality of composite fiber plies, bonded to the strike face of the core structure; and

a second composite fiber laminate, comprising a second plurality of composite fiber plies, bonded to the back face of the core structure;

wherein each composite fiber ply of the first and second plurality of composite fiber plies is comprised of a fibrous material impregnated with a matrix material.

2. The reinforced armor according to claim 1, further comprising a first bonding layer between the first composite fiber laminate and the strike face of the core structure, and a second bonding layer between the second composite layer and the back face of the core structure.

3. The reinforced armor according to claim 2, wherein the first bonding layer and the second bonding each comprises an adhesive selected from the group consisting of: epoxy resin adhesive, urethane adhesive, film adhesive, and liquid adhesive paste.

4. The reinforced armor according to claim 1, wherein the core structure comprises a core plate made from a material selected from the group consisting of: steel, ceramic, titanium, silicon carbide, metal matrix composites, cermets, polymer matrix composites, and Inconel alloys.

5. The reinforced armor according to claim 4, wherein the steel is selected from the group consisting of: abrasion resistant (AR) steel, stainless steel, mild steel, and duplex stainless steel.

6. The reinforced armor according to claim 4, wherein the ceramic is one of: alumina, silicon nitride, boron nitride, porcelain, and silicon carbide.

7. The reinforced armor according to claim 1, wherein at least some composite fiber plies of the first and second plurality of composite fiber plies are oriented at different orientation angles relative to a latitudinal axis of the core structure.

8. The reinforced armor according to claim 7, wherein the different orientation angles vary between 0 and +/-90 degrees.

9. The reinforced armor according to claim 1, wherein the second plurality of composite fiber plies has more composite fiber plies than the first plurality of composite fiber plies.

10. The reinforced armor according to claim 1, wherein at least one of the first and second plurality of composite fiber plies comprises composite fiber plies comprising different types of fibrous materials.

11. The reinforced armor according to claim 1, wherein the matrix material comprises: a polymer resin selected from the group consisting of: epoxy resin, vinyl ester, and

Polydicyclopentadiene (PDCPD).

12. The reinforced armor according to claim 1, wherein the fibrous material is one of: fiberglass, carbon fiber, aramid fiber, plastic fiber, and metallic fiber.

13. The reinforced armor according to claim 1, wherein the core structure comprises: a first core plate having a strike face and a back face;

a central composite fiber laminate having a strike face bonded to the back face of the first core plate, and having a back face; and

a second core plate having a strike face bonded to the back face of the central composite fiber laminate, and having a back face.

14. The reinforced armor according to claim 1, wherein the core structure comprises a core plate having a plurality of perforations.

15. The reinforced armor according to claim 14, wherein the plurality of perforations are filled with one of: an elastomer, an adhesive, epoxy resin, and PDCPD.

16. A process for reinforcing an armor by composite layering, comprising:

stacking a plurality of composite fiber plies using hand lay-up to create wet composite fiber laminate;

placing the wet composite fiber laminate on at least one surface of a core plate of the armor;

subjecting the wet composite fiber laminate and core plate to heating; and allowing the core plate and wet composite fiber laminate to co-cure; and cutting the composite fiber laminate to a desired length.

17. The process for reinforcing an armor according to claim 16, further comprising preparing the at least one surface of the core plate by at least one of: sandblasting, cleaning by a cleaning solvent, and applying an etchant.

18. The process for reinforcing an armor according to claim 16, wherein stacking the plurality of composite fiber plies comprises orienting the composite fiber plies at different orientation fiber angles.

19. A process for reinforcing an armor, comprising:

stacking a plurality of fiber plies, on a caul plate, using hand lay-up to create a fiber laminate;

vacuum bagging the fiber laminate;

placing the caul plate and fiber laminate in an oven and heating the caul plate and fiber laminate;

curing the fiber laminate to form a rigid fiber laminate plate;

demolding the rigid fiber laminate plate from the caul plate, and cutting it to a desired length;

applying bonding material to at least one surface of a core plate of the armor; and placing the rigid fiber laminate plate on the last least one face for bonding thereto.

20. The process for reinforcing an armor according to claim 19, wherein:

each ply of the plurality of fiber plies comprises a fibrous material impregnated with a matrix material;

the fiber laminate comprises a wet composite fiber laminate; and

the rigid fiber laminate plate comprises a rigid composite fiber laminate plate.

21. The process for reinforcing an armor according to claim 19, wherein:

each ply of the plurality of fiber plies comprise a dry fibrous material;

the fiber laminate comprises a dry fiber laminate;

the rigid fiber laminate plate comprises a rigid composite fiber laminate plate; and wherein the process further comprises using vacuum to draw a resin matrix into the dry fiber laminate to create a wet composite fiber laminate, prior to placing the caul plate and the wet composite fiber laminate in the oven.

22. The process for reinforcing an armor according to claim 19, further comprising preparing the at least one surface of the core plate by at least one of: sandblasting, cleaning by a cleaning solvent, and applying an etchant.

23. The process for reinforcing an armor according to claim 19, further comprising at least one of: cutting, machining, grinding, and polishing of the rigid fiber laminate plate prior to bonding the rigid fiber laminate plate to the core plate.

24. The process for reinforcing an armor according to claim 19, wherein stacking the plurality of composite fiber plies comprises orienting the composite fiber plies at different orientation fiber angles.