Repair method of repair target portion, and repaired product obtained from repairing

Patent metadata

Field	Value
Publication number	US-9475238-B2
Application number	US-201414226983-A
Country	US
Kind code	B2
Filing date	Mar 27, 2014
Priority date	Mar 28, 2013
Publication date	Oct 25, 2016
Grant date	Oct 25, 2016

Abstract

The present invention relates to a repair method using a pre-cured repairing patch, and a repaired product obtained from repairing using the repairing patch, and the present invention securely bonds a repairing patch, where an out-of-plane stiffness is required, to a repair target. In order to cover a repair target portion 23 formed in an outer panel 2 with a repairing patch 30 , and bond the repairing patch 30 to a repair target, repairing plates 31, 32 that are formed of fibers and thermosetting resin, and pre-cured before repairing are used as the repairing patch 30 , and a laminating step S 4 of laminating the repairing plates 31, 32 , and a bonding step S 7 of bonding the repairing plates 31, 32 to each other are performed.

First claim

What is claimed is:

1. A repair method of a repair target portion, in which the repair target portion formed in a repair target is covered with a repairing patch, and the repairing patch is bonded to the repair target,
the repair method
using a plurality of repair plates that are formed of fibers and resin, and pre-cured before repairing as the repairing patch,
and comprising:
a laminating step of laminating the plurality of repairing plates and an adhesive material to form the repairing patch;
a covering step of covering the repair target with the repairing patch while the adhesive material is not yet cured; and
a bonding step of bonding the plurality of repairing plates, laminated in the laminating step, to one another.

2. The repair method of a repair target portion according to claim 1 , wherein
in the laminating step,
on one of the repairing plates, another of the repairing plates having a greater size than that repairing plate is laminated.

3. The repair method of a repair target portion according to claim 2 , wherein
the repair target includes a panel including a core having a honeycomb structure and an outer skin supported by the core.

4. The repair method of a repair target portion according to claim 1 , further comprising
a step of determining each plate thickness of the plurality of repairing plates, or a number of the repairing plates.

5. The repair method of a repair target portion according to claim 1 , wherein
in the laminating step,
the plurality of repairing plates and a plurality of adhesive materials are laminated on top of one another.

6. The repair method of a repair target portion according to claim 1 , further comprising
a step of disposing a laminated-body on the repair target, the laminated-body formed in the laminating step, so as to cover the repair target portion.

7. The repair method of a repair target portion according to claim 1 , wherein
in the bonding step,
the plurality of repairing plates are bonded to the repair target by heating while the plurality of repairing plates are bonded to one another.

8. The repair method of a repair target portion according to claim 1 , further comprising
a step of performing a vacuum evacuation prior to the bonding step, vacuum evacuating the inside of a film after the plurality of repairing plates covering the repair target portion is covered by the film.

9. The repair method of a repair target portion according to claim 1 , wherein the plurality of repair plates are pre-cured before the laminating step of laminating the plurality of repairing plates.

10. The repair method of a repair target portion according to claim 1 , wherein
in the laminating step,
the plurality of repairing plates and a plurality of adhesive films are laminated on top of one another.

11. A repaired product comprising the repair target portion repaired according to the repair method of claim 1 , wherein the repairing patch is bonded to surroundings of the repair target portion,
the repairing patch including the plurality of repair plates that are formed of fibers and resin, and pre-cured before repairing, and
the plurality of repairing plates being laminated and bonded to one another.

12. The repaired product according to claim 11 , wherein
on one of the repair plates, another of the repair plates having a greater size than said one repair plate is laminated.

13. A member included in an aircraft comprising the repair target portion repaired according to the repair method of claim 1 , the repair target portion being formed in the member and the repair patch being bonded to surroundings of the repair target portion,
the repairing patch including the plurality of repair plates that are formed of fibers and resin, and pre-cured before repairing, and
the plurality of repair plates being laminated and bonded to one another.

14. The member included in an aircraft according to claim 13 , wherein the member includes an outer panel.

15. A repair method of a repair target portion, in which the repair target portion formed in a repair target is covered with a repairing patch, and the repairing patch is bonded to the repair target,
the repair method
using a plurality of repair plates that are formed of fibers and resin, and pre-cured before repairing as the repairing patch,
and comprising:
a laminating step of laminating the plurality of repairing plates; and
a bonding step of bonding the plurality of repairing plates, laminated in the laminating step, to one another, wherein
the repair target includes a panel including a core having a honeycomb structure and an outer skin supported by the core.

Assignees

• Mitsubishi Aircraft Corp

Inventors

• Suhara Masayoshi
• Shigetomi Toshikazu
• Tanaka Hideaki
• Ishida Morimasa
• Muto Shuhei

Classifications

• B29C73/12

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

• Y10T428/20

  Patched hole or depression · CPC title

• B29C73/10 Primary

  using patches sealing on the surface of the article (B29C73/14 takes precedence) · CPC title