Mitsubishi Aircraft Corporation

Shuhei Muto

Masayoshi Suhara

Toshikazu Shigetomi

Morimasa Ishida

Kiwamu Arikawa

Hiroyuki Iseki

Hideaki Tanaka

Kohei Hatano

Katsumi Takagi

Ryuichi Nagase

Masatsugu Shimizu

Kotoyo Mizuno

To reduce a time required for repairing a honeycomb core sandwich panel. A repair method according to the present invention is a repair method, in which a repair patchis disposed on a repair target portion that exists on the side of a repair surfaceA of a honeycomb core sandwich panel, the honeycomb core sandwich panelbeing formed by sandwiching a honeycomb structured corewith a plurality of cells between skinsand, the method including: a heating step of heating the repair patch; and a cooling step of cooling the honeycomb core sandwich panelfrom the side of a second surfaceB opposing the repair surfaceA of the honeycomb core sandwich panel

Method and apparatus for repairing honeycomb core sandwich panel

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 portionexisting in an outer panel, includes: a repairing material disposing step of disposing a repairing patchincluding a resistance heating elementand a carbon fiber reinforced resin, and an adhesiveA including a thermosetting resin before being hardened for bonding the repairing patchon the repair target portion; and a heating-hardening step of heating and hardening the thermosetting resin of the adhesiveA by causing the resistance heating elementto generate heat through supply of electricity thereto.

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

The present invention provides a device which can uniformize heat distribution by using an existing heater mat for repairing or joining members. A heat dispersion device includes a bag with a fluid sealed inside, and is disposed on a second surface of a heater mat which has a first surface to be directed toward an object to be heated and the second surface opposite to the first surface. The fluid inside the bag is preferably heated with a heat source.

Heat dispersion device and repair and joining methods

The present invention provides a method for locating a machining position in a repair material that is arranged on a member including a machined portion formed by predetermined machining, the method including: a step of arranging a marker including a portion having a different propagation characteristic of an ultrasonic wave from that of a peripheral portion in the machined portion existing in the member before the repair material is arranged on the member; and a step of applying the ultrasonic wave to the member covered with the repair material and locating the machining position at a position of the marker captured by the ultrasonic wave after the repair material is arranged on the member.

Method for locating machining position in repair material, and repairing method

The present invention provides a method for repairing a lightning protection material that is made of a metal material and is provided along a surface of a member formed by using a fiber reinforced resin includes: bonding a repair material made of a metal material over a lost region of the member where the lightning protection material is lost by using a liquid adhesive and a sheet-shaped holder that contains and holds the adhesive and is arranged at the lost region.

Method for repairing lightning protection material, and member provided with lightning protection material

A method for repairing a honeycomb core sandwich structural body according to the present invention is a method in which a damaged portion that is formed in a honeycomb core sandwich structural body where a honeycomb structured core is held between a first outer skin and a second outer skin and that reaches the core through the first outer skin is repaired, the method including: a repair material mounting step of mounting a repair material on the damaged portion, the repair material including a patch that covers an opening of the damaged portion, and one or a plurality of braces that support the patch; a patch bonding step of bonding the patch to the first outer skin; and a brace bonding step of bonding the brace to the second outer skin or the core.

Method for repairing honeycomb core sandwich structural body and repaired product

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 portionexisting in an outer panel, includes a repairing material disposing step of disposing a repairing patchand an adhesiveA to the repair target portion; and a heating-hardening step of heating and hardening the adhesiveA by irradiating it with electromagnetic waves.

Repair method of repair target portion, and repair apparatus

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 portionformed in an outer panelwith a repairing patch, and bond the repairing patchto a repair target, repairing platesthat are formed of fibers and thermosetting resin, and pre-cured before repairing are used as the repairing patch, and a laminating step Sof laminating the repairing plates, and a bonding step Sof bonding the repairing platesto each other are performed.

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

A repair method according to the present invention is a method for repairing a honeycomb core sandwich panel, the method including: a repair patch disposing step of disposing a repair patch and an adhesive on at least one of a first surface and a second surface of the panel, the first outer skin being located on the first surface, and the second outer skin being located on the second surface; a panel restraining step of sandwiching the panel and the repair patch from both surface sides of the first surface and the second surface and thereby restraining the panel; and a heating step (thermal curing step) of heating the adhesive while the panel is restrained.

A method of repairing a composite material is provided in which a frustum-shaped portion of a composite material is removed, and the composite material and a repair material are bonded with each other while evacuating. The repair method includes step Sof removing a damaged partfrom the front side so as to pass through in the thickness direction while leaving a support wall protruding inward in the radial direction from the periphery of the top face of the frustum-shaped portion; step Sof sealing the back side by placing a sealing plate, which is inserted from the front side into a through hole formed by the removing step, on the support wall; step Sof placing the repair material through an adhesive on the composite material where the frustum-shaped portion has been removed; and step Sof evacuating in a state in which the front side is sealed.

Growing community of inventors

Aichi, Japan

Shuhei Muto