Multi-functional composite structures

Patent metadata

Field	Value
Publication number	US-10167550-B2
Application number	US-201514726964-A
Country	US
Kind code	B2
Filing date	Jun 1, 2015
Priority date	Jun 3, 2014
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

A multi-functional composite system generally comprises a core, a plurality of structural composite fiber layers, a matrix material, a connector configured to interface with one or more electrical devices and a composite conductor assembly, the composite conductor assembly having one or more conductors disposed between two or more insulating layers.

First claim

What is claimed is:

1. A multi-functional composite structure comprising:
a composite structure configured to pass structural loads, the composite structure having a plurality of structural composite fiber layers, each of the structural composite fiber layers comprising a matrix material;
a connector configured to interface with one or more electrical devices;
a composite conductor assembly electrically coupled with said connector, the composite conductor assembly having a moisture barrier resin adhesive and one or more carbon nanotube (CNT) conductors disposed between two or more insulating layers, wherein each of the two or more insulating layers comprising fiberglass,
wherein a first portion of the composite conductor assembly is embedded between a first set of two non-adjacent layers of said plurality of structural composite fiber layers,
wherein the first portion is substantially parallel to the first set of two non-adjacent layers,
wherein the two or more insulating layers electrically isolate the one or more CNT conductors from said plurality of structural composite fiber layers, and
wherein a second portion of the composite conductor assembly egresses from the multi-functional composite structure by traversing at least one of the plurality of structural composite fiber layers while maintaining electrical isolation between the composite conductor assembly's one or more CNT conductors and the plurality of structural composite fiber layers.

2. The multi-functional composite structure of claim 1 , wherein said composite conductor assembly further comprises a fiber metal laminate material.

3. The multi-functional composite structure of claim 1 , wherein the composite conductor assembly is stepped through each of the plurality of structural composite fiber layers.

4. The multi-functional composite structure of claim 1 , wherein the composite conductor assembly is stepped through the plurality of structural composite fiber layers to egress the multi-functional composite structure.

5. The multi-functional composite structure of claim 1 , wherein a third portion of the composite conductor assembly is embedded between a second set of two non-adjacent layers of said plurality of structural composite fiber layers, said second set being different from said first set.

6. The multi-functional composite structure of claim 5 , wherein a fourth portion of the composite conductor assembly is embedded between a third set of two non-adjacent layers of said plurality of structural composite fiber layers, said third set being different from said first and second sets.

7. The multi-functional composite structure of claim 6 , wherein (a) the first portion, (b) the third portion, and (c) the fourth portion are substantially parallel to each other.

8. The multi-functional composite structure of claim 6 , wherein the third and fourth portions are substantially parallel to one or more of said plurality of structural composite fiber layers.

9. The multi-functional composite structure of claim 1 , wherein the second portion is positioned at an edge of the composite conductor assembly.

10. The multi-functional composite structure of claim 1 , wherein the connector is positioned at a surface of said multi-functional composite structure.

11. The multi-functional composite structure of claim 10 , wherein the connector is a pad site or printed circuit board.

12. The multi-functional composite structure of claim 1 , wherein the composite conductor assembly employs a resin system that is compatible with the matrix material of the composite structure.

13. The multi-functional composite structure of claim 1 , wherein the one or more CNT conductors comprises a signal conductor and the composite conductor assembly further comprises a shielding material to shield the signal conductor.

14. The multi-functional composite structure of claim 1 , wherein at least a portion of the composite conductor assembly is co-cured with the composite structure.

15. A method comprising the step of using the multi-functional composite structure of claim 1 .

16. A load-bearing composite structure for use in a vehicle, the load-bearing composite structure comprising:
a composite structure configured to pass structural loads, the composite structure having a plurality of structural composite fiber layers, each of the structural composite fiber layers comprising a matrix material, wherein the plurality of structural composite fiber layers includes a first, a second, and a third structural composite fiber layer, wherein the second structural composite fiber layer is layered over the third structural composite fiber layer, and the first structural composite fiber layer is layered over the second structural composite fiber layer;
a connector configured to interface with one or more electrical devices, wherein the connector is positioned at a surface of the first structural composite fiber layer and electrically coupled to the composite conductor assembly;
a composite conductor assembly, the composite conductor assembly having a moisture barrier resin adhesive and a plurality of carbon nanotube (CNT) conductors disposed between two or more insulating layers, said plurality of CNT conductors comprising at least one signal conductor, wherein each of the two or more insulating layers comprising fiberglass,
wherein the composite conductor assembly further comprises a shielding material to shield the at least one signal conductor,
wherein the two or more insulating layers electrically isolate the one or more CNT conductors from said plurality of structural composite fiber layers, and
wherein the composite conductor assembly is stepped through the plurality of structural composite fiber layers such that
(i) a first portion of the composite conductor assembly is embedded between, and in contact with each of the first and third structural composite fiber layers such that the first portion prevents said first and third structural composite fiber layers from contacting one another at the first portion, wherein the first portion is substantially parallel to the first and third structural composite fiber layers, and
(ii) a second portion of the composite conductor assembly traverses the first structural composite fiber layer to egress from the multi-functional composite structure while maintaining electrical isolation between the composite conductor assembly's one or more CNT conductors and the plurality of structural composite fiber layers.

17. The load-bearing composite structure of claim 16 , wherein the connector is a pad, site or printed circuit board.

18. The load-bearing composite structure of claim 16 , wherein at least a portion of the composite conductor assembly is co-cured with the composite structure.

19. A load-bearing composite structure for use in a vehicle, the load-bearing composite structure comprising:
a composite Structure configured to pass structural loads, the composite structure having a plurality of structural composite fiber layers, each of the structural composite fiber layers comprising a matrix material, wherein the plurality of structural composite fiber layers includes a first, a second, a third, and a fourth structural composite fiber layer,
wherein the third structural composite fiber layer is layered over the fourth structural composite fiber layer, the second structural composite fiber layer is layered over the third structural composite fiber layer, and the first structural composite fiber layer is layered over the second structural composite fiber layer;

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Assignees

• Aurora Flight Sciences Corp

Inventors

• Wen Ed
• Cottrell Dan
• Ehrmantraut Adam
• Blehar Mark
• Kordonowy David

Classifications

• B29L2031/3076

  Aircrafts (blades, propellers B29L2031/08) · CPC title

• H05K3/281

  by means of a preformed insulating foil (H05K3/284 takes precedence) · CPC title

• H05K3/321

  by conductive adhesives · CPC title

• H05K1/0393

  Flexible materials (H05K1/038 takes precedence; specific organic compositions are classified in H05K1/0313 and subgroups) · CPC title

• B64D45/00

  Aircraft indicators or protectors not otherwise provided for · CPC title