Repair method of repair target portion, repaired product, and repair apparatus

Patent metadata

Field	Value
Publication number	US-10065727-B2
Application number	US-201414227171-A
Country	US
Kind code	B2
Filing date	Mar 27, 2014
Priority date	Mar 28, 2013
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

The present invention sufficiently heats a repairing material while preventing change in quality of a base material provided with the repairing material so as to securely bond the repairing material to a repair target portion. The repair method of the present invention, in order to repair a repair target portion 14 existing in an outer panel 1, includes: a repairing material disposing step of disposing a repairing patch 21 including a resistance heating element 23 and a carbon fiber reinforced resin, and an adhesive 22A including a thermosetting resin before being hardened for bonding the repairing patch 21 on the repair target portion 14; and a heating-hardening step of heating and hardening the thermosetting resin of the adhesive 22A by causing the resistance heating element 23 to generate heat through supply of electricity thereto.

First claim

What is claimed is:

1. A method of repairing a repair target portion existing in a repair target,
the method comprising:
a repairing material disposing step of disposing a repairing material, which includes a resistance heating element and a thermosetting resin before being hardened, on the repair target portion, wherein the repairing material comprises:
a carbon fiber reinforced resin including the thermosetting resin and carbon fibers, and
an insulator for insulating the resistance heating element from the carbon fibers; and

a heating-hardening step of heating and hardening the thermosetting resin by causing the resistance heating element to generate heat through supply of electricity to the resistance heating element,
wherein the resistance heating element and the insulator are embedded in the repairing material prior to the repairing material disposing step.

2. The method of repairing a repair target portion according to claim 1 , wherein
the repairing material comprises:
a first repairing material formed of the carbon fiber reinforced resin; and
a second repairing material including the thermosetting resin, and bonding the first repairing material to the repair target portion,
and
the resistance heating element is included in at least one of the first repairing material and the second repairing material.

3. The method of repairing a repair target portion according to claim 1 , wherein
a honeycomb core sandwich structure configured by holding a core having a honeycomb structure including a number of cells between outer skins is repaired as the repair target.

Assignees

• Mitsubishi Aircraft Corp

Inventors

• Arikawa Kiwamu
• Suhara Masayoshi
• Iseki Hiroyuki
• Muto Shuhei

Classifications

• B64F5/40

  Maintaining or repairing aircraft · CPC title

• B29C73/12

  Apparatus therefor, e.g. for applying (B29C73/30 takes precedence) · CPC title

• B29C66/7212

  characterised by the composition of the fibres · CPC title

• B32B27/04

  as impregnant, bonding, or embedding substance {(not used)} · CPC title

• B64C1/12

  Construction or attachment of skin panels · CPC title