Synergistically-Layered Armor Systems and Methods for Producing Layers Thereof

• US 20110107904A1
• Filed: 08/15/2008
• Published: 05/12/2011
• Est. Priority Date: 08/15/2007
• Status: Abandoned Application

• Current Assignee: University of Virginia
• Original Assignee: University of Virginia Patent Foundation (University of Virginia)
• Inventors: Queheillalt, Douglas T., Wadley, Haydn N.G.
• Application Number:
  US12/673,647
• Publication Number:
  US 20110107904A1
• Time in Patent Office: Days
• US Class Current: 89/36.02
• CPC Class Codes: F41H 5/023 Armour plate, or auxiliary armour plate mounted at a distance of the main armour plate, having cavities at its outer impact surface, or holes, for deflecting the projectile
• CPC Class Codes: F41H 5/0421 Ceramic layers in combination with metal layers
• CPC Class Codes: F41H 5/0428 Ceramic layers in combination with additional layers made of fibres, fabrics or plastics
• CPC Class Codes: F41H 5/0457 Metal layers in combination with additional layers made of fibres, fabrics or plastics
• CPC Class Codes: F41H 5/0492 Layered armour containing hard elements, e.g. plates, spheres, rods, separated from each other, the elements being connected to a further flexible layer or being embedded in a plastics or an elastomer matrix

Abstract

The armor system according to the present invention also exploits synergistic multi-layering to provide different properties as a function of depth within a sandwich panel. Various embodiments of the invention include a combination of composite sandwich topology concepts with hard, strong materials to provide structures that (i) efficiently support static and fatigue loads, (ii) mitigate the blast pressure transmitted to a system that they protect, (iii) provides very effective resistance to projectile penetration, and (iv) minimizes shock (stress wave) propagation within the multi-layered armor sandwich structure. By using small pieces of highly constrained ceramic, the concept has significant multi-hit potential.

Claims

1. A synergistically-layered armor system comprising a plurality of layers, wherein at least one layer comprises a plurality of projectile-resisting fill elements confined within voids of a cellular structure comprising a plurality of voids, wherein the fill elements are individually isolated with the plurality of voids.

2. The synergistically-layered armor system of claim 1, wherein the fill elements are shaped as triangular prisms, each having an apex, and a base.

3. The synergistically-layered armor system of claim 2, wherein the fill elements are ceramic elements shaped as triangular prisms are arranged in a staggered formation such that the apex of each ceramic element is coplanar with the bases of two adjacent ceramic elements.

4. The synergistically-layered armor system of claim 2, wherein the fill elements are segmented.

5. The synergistically-layered armor system of claim 1, wherein the cellular structure is a square honeycomb core structure.

6. The synergistically-layered armor system of claim 1, wherein the fill elements are metal elements.

7. The synergistically-layered armor system of claim 1, wherein the fill elements are ceramic elements and metal elements arranged in an alternating configuration within said voids.

8. A synergistically-layered armor system comprising:

a cellular core structure;

a ceramic layer formed on top of said cellular core structure;

a damping layer formed on top of said ceramic layer; and

a spalling layer formed on said cellular core structure opposite to said ceramic layer.

9. The synergistically-layered armor layer of claim 8, wherein said cellular core structure is a lattice-based truss core structure.

10. The synergistically-layered armor layer of claim 9, wherein said lattice-based truss core structure is constructed from hollow tubes.

11. The synergistically-layered armor layer of claim 8, wherein said cellular core structure is a square honeycomb core structure.

12. A synergistically-layered armor system comprising a plurality of synergistic modular layers, wherein at least one modular layer comprises:

a structure panel having a front plate and a back plate;

a corrugating element positioned between and adjoining the front plate and the back plate, wherein the corrugating element defines a plurality of voids; and

at least one fill material filling at least one of the plurality of voids.

13. The synergistically-layered armor system of claim 12, wherein the fill material is a metal material.

14. The synergistically-layered armor system of claim 12, further comprising a plurality of fill materials, wherein the fill materials are ceramic elements and metal elements arranged in an alternating configuration within said voids.

15. The armor system of claim 12, wherein the structure panel bears the structural loads of a vehicle.

16. The armor system of claim 12, wherein the structure panel is fabricated from a metal alloy.

17. The armor system of claim 16, wherein the structure panel is fabricated from an aluminum alloy.

18. The armor system of claim 12, wherein each of the plurality of voids defined by the corrugating element are shaped as triangular prisms.

19. The armor system of claim 18, wherein the at least one fill material is at least one ceramic prism.

20. The armor system of claim 18, wherein the at least one fill material is a plurality of ceramic prisms arranged in a staggered formation.

21. The armor system of claim 12, further comprising an additional modular layer, wherein the additional modular layer is a hard ceramic layer affixed to the front plate.

22. The armor system of claim 21, wherein the hard ceramic layer is encapsulated by a fiber reinforced polymer composite sandwich structure.

23. The armor system of claim 12, further comprising an additional modular layer, wherein the additional modular layer is a spall shield affixed to the back plate.

24. The armor system of claim 12, further comprising additional modular layers,

wherein the first additional modular layer is a central layer having a front face and a back face,

wherein the second additional modular layer is a first cellular structure connected to the front face, and

wherein the third additional modular layer is a second cellular structure connected to the back face.

25. The armor system of claim 24, wherein the first cellular structure layer has a multilayered pyramidal lattice structure.

26. The armor system of claim 24, wherein the first cellular layer and the second cellular layer have multilayered pyramidal lattice structures.

27. The armor system of claim 24, further comprising a fourth additional modular layer, wherein the fourth additional modular layer is a cellular sandwich panel affixed to the first cellular structure,

wherein the cellular sandwich panel comprises:

a front plate and a back plate;

a corrugating element positioned between and adjoining the front plate and the back plate, wherein the corrugating element defines a plurality of voids; and

at least one fill material filling the plurality of voids.

28. A method for producing an armor layer, the method comprising:

providing a first plurality of triangular prism elements, each having an apex and a base;

aligning the first plurality of triangular prism elements such that the bases are coplanar and the apexes are parallel to one another;

placing a reinforced composite layer on the apexes of the first plurality of triangular prism elements;

providing a second plurality of triangular prism elements, each having an apex and a base;

aligning the second plurality of triangular prism elements such that the bases are coplanar and the apexes are parallel to one another;

pressing the apexes of the second plurality of triangular prism elements against the reinforced composite layer to deform the reinforced composite layer until the apexes of the second plurality of triangular prism elements are coplanar with the bases of the first plurality of triangular prism elements; and

thereby forming an armor layer.