Apparatus for curing composite materials and method of use thereof

Patent metadata

Field	Value
Publication number	US-2018035489-A1
Application number	US-201715727804-A
Country	US
Kind code	A1
Filing date	Oct 9, 2017
Priority date	Oct 10, 2014
Publication date	Feb 1, 2018
Grant date	—

Abstract

A method of supplying electricity to an electrical component inside a vacuum chamber may include positioning an electrical component inside a vacuum chamber, the electrical component having a first electrical connector portion. A second electrical connector portion may then be connected to the first electrical portion through a hole in a flexible wall of the vacuum chamber, the second electrical connector portion being electrically connected to circuitry disposed outside the vacuum chamber. The connecting step may include hermetically clamping the flexible wall of the vacuum chamber between the first and second electrical connector portions.

First claim

What is claimed is:

1 . A method of supplying electricity to an electrical component inside a vacuum chamber, comprising:
positioning an electrical component inside a vacuum chamber, the electrical component having a first electrical connector portion, connecting a second electrical connector portion to the first electrical portion through a hole in a flexible wall of the vacuum chamber, the second electrical connector portion being electrically connected to circuitry disposed outside the vacuum chamber, wherein the connecting step includes hermetically clamping the flexible wall of the vacuum chamber between the first and second electrical connector portions.

2 . The method of claim 1 , wherein the first electrical connector portion includes a first set of one or more electrical contacts, further comprising:
extending the first set of one or more electrical contacts through the hole in the flexible wall of the vacuum chamber.

3 . The method of claim 1 , wherein the electrical component includes a curing apparatus.

4 . The method of claim 3 , wherein the curing apparatus includes a heating element.

5 . The method of claim 1 , wherein the second connector portion is a male connector portion, and the first connector portion is a female connector portion.

6 . The method of claim 1 , wherein the first connector portion is a male connector portion, and the second connector portion is a female connector portion.

7 . The method of claim 1 , wherein the first electrical connector portion includes a base flange surrounding a barrel, the flexible wall having a clamping region surrounding the entire perimeter of the hole in the flexible wall, the clamping step including pressing the clamping region of the wall against the base flange of the first electrical connector portion.

8 . The method of claim 7 , further comprising:
hermetically sealing an interior space in the barrel with a potting material.

9 . The method of claim 7 , wherein the base flange extends from and is connected to the lower portion of the barrel.

10 . The method of claim 8 , wherein the barrel contains male electrical contacts protruding from the potting material, the second electrical connector portion including female electrical contacts, the clamping step including receiving the male electrical contacts in the female electrical contacts.

11 . The method of claim 8 , wherein the potting material has a lower thermal conductivity than a material of the first set of one or more electrical contacts.

12 . The method of claim 1 , further comprising,
using electricity supplied from the circuitry to generate heat in the electrical component inside the vacuum chamber.

13 . The method of claim 1 , further comprising:
heating a surface of a composite material inside the vacuum chamber.

14 . A method of providing electricity to an interior of a vacuum chamber, comprising:
coupling a first electrical connector portion to a second electrical connector portion through a hole in a flexible wall of a vacuum chamber, including hermetically sealing the chamber by clamping a region surrounding the entire perimeter of the hole between the first and second electrical connector portions.

15 . The method of claim 14 , wherein the first electrical connector is connected to a heating mat applied to a surface of a composite material, further comprising:
curing the composite material by heating the mat inside the hermetically sealed vacuum chamber.

16 . A method comprising:
positioning a curing apparatus on a cure zone of a composite material, the curing apparatus including one or more electrical components electrically connected to a first set of one or more electrical contacts; disposing a vacuum bag film over the curing apparatus opposite the composite material; securing the vacuum bag film to the composite material with an adhesive interface to form a vacuum chamber in which the curing apparatus is disposed; and hermetically extending the first set of one or more electrical contacts through a hole in the vacuum bag film.

17 . The method of claim 16 , wherein the hermetically extending step is carried out prior to the securing step.

18 . The method of claim 16 , further comprising substantially evacuating the vacuum chamber to a substantially evacuated state such that the vacuum bag film applies a pressing force against the composite material via the curing apparatus, and maintaining the vacuum chamber in the substantially evacuated state such that an atmospheric pressure inside the vacuum chamber increases by no more than 127 mmHg in a five minute interval of time via one or more of the adhesive interface and the hole.

19 . The method of claim 16 , where the first set of one or more electrical contacts are included in a first connector portion of a coupler, the method further comprising electrically interconnecting the first set of one or more electrical contacts with a second set of corresponding one or more electrical contacts included in a second connector portion of the coupler that are configured for electrical connection to circuitry disposed outside of the vacuum chamber, the one or more electrical components of the curing apparatus being configured to operate in conjunction with the circuitry by at least one or more of (a) receiving electrical power from the circuitry via electrical interconnection of the first and second sets for applying thermal energy to the composite material, and (b) transmitting to the circuitry via electrical interconnection of the first and second sets a signal indicative of a measured temperature of the composite material for monitoring application of thermal energy to the composite material.

20 . The method of claim 19 , wherein the steps of hermetically extending and electrically interconnecting are performed at least partially concurrently by the second connector portion mating with the first connector portion to electrically interconnect the second set of corresponding one or more electrical contacts with the first set of one or more electrical contacts and to clamp a region of the vacuum bag film surrounding an entire perimeter of the hole between the first and second connector portions thereby hermetically sealing the hole.

Assignees

• Boeing Co

Inventors

• Spalding Jr John F
• Hottes Christopher John
• Miller Robert James

Classifications

• H05B3/34

  flexible, e.g. heating nets or webs · CPC title

• H01R13/5219

  Sealing means between coupling parts, e.g. interfacial seal · CPC title

• H05B3/04 Primary

  Waterproof or air-tight seals for heaters · CPC title

• H05B2203/003

  using serpentine layout · CPC title

• H05B3/06

  Heater elements structurally combined with coupling elements or holders · CPC title