Methods and apparatuses for maintaining temperature differential in materials using thermoelectric devices during hot bonded repair

Patent metadata

Field	Value
Publication number	US-10309695-B2
Application number	US-201615232200-A
Country	US
Kind code	B2
Filing date	Aug 9, 2016
Priority date	Aug 9, 2016
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

Methods, systems, and apparatuses for repairing a composite material in situ are disclosed including maintaining and controlling the temperature of a material adjoining a composite material in situ, while the composite material is being heating during a composite material repair, such repair accomplished by positioning a heat source proximate to a first side of the composite material and positioning a thermoelectric device proximate to a structure located proximate to the second of the composite material, and substantially maintaining the temperature of the structure at a temperature that is different than a temperature of the composite material.

First claim

What is claimed is:

1. A method comprising:
positioning a heat source proximate to a first side of a composite material, said composite material having a first side and a second side, with a structure located proximate to the second side of the composite material, said structure having a first side and a second side, with the first side of the structure located proximate to the second side of the composite material;
positioning a thermoelectric device proximate to the second side of the structure, said thermoelectric device in communication with a controller;
contacting the second side of the structure with a temperature sensing device, said temperature sensing device in communication with the controller;
activating the heat source;
applying heat from the heat source to the first side of the composite material;
heating the composite material to a first temperature;
providing an electric current to the thermoelectric device; and
substantially maintaining the temperature of the structure at a second temperature that is different than the first temperature of the composite material.

2. The method of claim 1 , wherein, in the step of positioning a heat source proximate to a first side of a composite material, the heat source comprises a heat blanket.

3. The method of claim 1 , wherein, in the step of positioning a heat source proximate to a first side of a composite material, the structure comprises a material different from the composite material.

4. The method of claim 1 , wherein, in the step of positioning a heat source proximate to a first side of a composite material, the structure comprises a metallic material.

5. The method of claim 1 , wherein, in the step of positioning a thermoelectric device proximate to the second side of the structure, the thermoelectric device is a Peltier device.

6. The method of claim 5 , wherein the Peltier device is moldable to contact a non-planar surface.

7. The method of claim 5 , wherein the thermoelectric device comprises a plurality of Peltier devices configured in series.

8. The method of claim 5 , wherein the thermoelectric device comprises a plurality of Peltier devices configured in a stacked orientation.

9. The method of claim 1 , wherein, in the step of substantially maintaining the temperature of the structure at a second temperature that is different from the first temperature of the composite material, the second temperature is maintained at a temperature that is less than the first temperature of the composite material.

10. The method of claim 1 , wherein, before the step of substantially maintaining the temperature of the structure at a second temperature that is different from the temperature of the composite material, further comprising monitoring the temperature of the structure.

11. The method of claim 1 , wherein, in the step of substantially maintaining the temperature of the structure at a second temperature that is different from the temperature of the composite material, the temperature difference between the second temperature of the structure and the first temperature of the composite material ranges from about 20° F. to about 150° F.

12. The method of claim 1 , further comprising:
repairing the composite material.

13. The method of claim 1 , wherein the structure comprises a non-metallic material.

14. The method of claim 1 , wherein the controller is configured to control a current directed from an electric source to the thermoelectric device.

15. The method of claim 1 , wherein the thermoelectric device comprises a thermocouple.

16. The method of claim 1 , wherein the thermoelectric device is in communication with a thermocouple.

17. The method of claim 1 , further comprising the step of reworking the composite material in-situ.

Assignees

• Boeing Co

Inventors

• Oakes Gary D

Classifications

• F25B21/04

  reversible · CPC title

• F25B21/02 Primary

  using Peltier effect; using Nernst-Ettinghausen effect · CPC title

• B64F5/40

  Maintaining or repairing aircraft · CPC title

• B64C2001/0072

  from composite materials · CPC title

• B64C1/12

  Construction or attachment of skin panels · CPC title