IP Library › Granted Patent US 10,377,084
Granted Patent B2
US 10,377,084 · App. 15/477,723 · Granted Aug 13, 2019

Conformable induction coils for induction joining

Inventors: Marc Rollo Matsen (Seattle, WA); Robert James Miller (Fall City, WA)
Assignee: The Boeing Company
B29C65/02B23K13/04B29C65/368B29C65/3632B29C65/3668B29C66/00145B29C66/54B29C66/721B29C66/73921B29C66/73941B29C66/81455B64C3/26B29C66/81461B29L2031/3085B29L2031/711
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Quick Facts
Patent No.
US 10,377,084
App. No.
15/477,723
Granted
Aug 13, 2019
Kind
B2
Abstract

A method and apparatus for joining parts. A plurality of conformable induction coils embedded in a number of elastomeric sheets is positioned relative to a first composite part of the parts and a second composite part of the parts. A magnetic field is generated with the plurality of conformable induction coils. The magnetic field is configured to generate heat in a magnetically permeable material at a joint location. The heat joins the first composite part and the second composite part to each other.

Claims (41)

1. A method for joining parts, the method comprising:

positioning a plurality of conformable induction coils embedded in a number of elastomeric sheets relative to a first composite part of the parts and a second composite part of the parts; and

generating a magnetic field with the plurality of conformable induction coils, wherein the magnetic field is configured to generate heat in a magnetically permeable material at a joint location, wherein the heat joins the first composite part and the second composite part to each other;

wherein the magnetically permeable material comprises wires, and wherein embedding the magnetically permeable material in a thermoplastic material comprises embedding the wires such that the wires are directed orthogonal to the plurality of conformable induction coils.

2. The method of claim 1 , further comprising:

positioning a number of conductive plates relative to the joint location such that the magnetic field is present in a desired area.

3. The method of claim 1 , further comprising:

applying a vacuum to the first composite part and the second composite part.

4. The method of claim 1 , further comprising:

applying pressure to at least one of the first composite part and the second composite part using a number of bladders.

5. The method of claim 1 , further comprising at least one of:

embedding the magnetically permeable material in a thermoplastic material of at least one of the first composite part and the second composite part; and

embedding the magnetically permeable material in a thermoplastic material between the first composite part and the second composite part.

6. A method for joining a first composite part and a second composite part, the method comprising:

embedding a plurality of conformable induction coils in a number of elastomeric sheets;

configuring a magnetically permeable material to generate heat when exposed to a magnetic field;

wherein the magnetically permeable material comprises wires embedded in a thermoplastic material; and

wherein the wires are directed orthogonal to the plurality of conformable induction coils.

7. The method of claim 6 , further comprising:

positioning a number of conductive plates relative to a joint location between the first composite part and the second composite part such that a magnetic field is present in a desired area.

8. The method of claim 6 , wherein the plurality of conformable induction coils comprise a plurality of lengths of Litz wire.

9. The method of claim 6 , further comprising:

embedding the magnetically permeable material in a thermoplastic material in the first composite part.

10. The method of claim 6 , further comprising:

embedding the magnetically permeable material in a thermoplastic material in the second composite part.

11. The method of claim 6 , further comprising:

placing the magnetically permeable material in a thermoplastic material between the first composite part and the second composite part.

12. The method of claim 6 , further comprising:

extending the plurality of conformable induction coils less than a full length of one of the first composite part and the second composite part.

13. The method of claim 6 , further comprising:

sealing a vacuum bag to a tool in a number of tools.

14. The method of claim 13 , wherein the number of tools is formed of a polyurethane foam board.

15. The method of claim 6 , further comprising:

operatively coupling a power source to the plurality of conformable induction coils.

16. A method for joining a first composite part and a second composite part, the method comprising:

embedding a plurality of conformable induction coils in a number of elastomeric sheets;

positioning a number of conductive plates relative to a joint location between the first composite part and the second composite part such that a magnetic field is present in a desired area; and

configuring wires embedded in a thermoplastic material to generate heat when exposed to a magnetic field, and wherein the wires are directed orthogonal to the plurality of conformable induction coils;

wherein the plurality of conformable induction coils comprise a plurality of lengths of Litz wire.

17. The method of claim 16 , further comprising:

embedding the thermoplastic material in the first composite part, the second composite part, or between the first composite part and the second composite part.

Continuity (2)
Division 14021468 · Sep 9, 2013
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