Mitsubishi Heavy Industries Limited

Mitsubishi Aircraft Corporation

Meidensha Corporation

Nissan Motor Company Limited

Mitsubishi Heavy Industries Aero Engines, Ltd.

Mitsubishi Jidosha Kogyo Kabushiki Kaisha

The University of Tokyo

Hiromichi Akiyama

Shunichi Morishima

Akihisa Okuda

Toshio Kozasa

Masayuki Kanemasu

Kazuki Noma

Masahiko Shimizu

Kiyoka Takagi

Kenji Murakami

Akira Fukushima

Toshiki Kitazawa

Yuichi Yui

Kazuaki Kishimoto

Masayuki Yamashita

Takeshi Yoshikawa

Hideki Horizono

Shoya Mano

Yosuke Takahashi

Akihito Suzuki

Takahiro Sekigawa

Yasuhiko Tsuru

Kiminobu Terao

Homare Yamato

Akihiro Terasaka

Shinsuke Horibe

Yutaka Terada

Naoto Azusawa

Shinya Suzukake

Kiichi Nishiguchi

Sakae Ishida

Daiji Nakagawa

Joji Matsubara

Takahiro Shimekake

Tsuyoshi Takahashi

Mikoto Omori

Masahiro Shinya

Hisao Esaka

Dai Oono

A method for producing a prepreg in which a reinforcing fiber base material is impregnated with a resin to produce a prepreg, wherein said method comprises: a step for preparing a first resin, which is the resin containing a filler, and a second resin, which is the resin not containing a filler; a step for arranging the second resin adjacent to the reinforcing fiber base material; a step for arranging the first resin adjacent to the reinforcing fiber base material and/or the second resin; and a step for impregnating the reinforcing fiber base material with the resin of the first resin and the second resin.

Method for producing prepreg and method for molding composite material

In a processing method for a ceramic-based composite material in which the ceramic-based composite material is molded by layering sheets obtained by impregnating reinforced fibers with a slurry containing ceramic powder and calcining the sheets after curing, the processing method includes layering the sheets in a layering direction to form a laminate, and covering the laminate with a vacuum bag and evacuating an inside of the vacuum bag to mold a cured laminate. In molding the cured laminate, a slurry-removing material configured to absorb excess slurry is disposed with respect to the laminate, and a degassing circuit member provided on at least one side of the laminate and configured to discharge air bubbles generated inside the laminate is disposed with respect to the laminate.

Processing method for ceramic-based composite material

An object is to provide a composite pre-bonding treatment method that stabilizes quality of a bonded part. The present disclosure provides a composite pre-bonding treatment method performed when bonding a composite material to a member. The method includes: (S) attaching an absorber adapted to absorb a contaminant to a surface of a prepreg laminate that is a precursor of the composite material; (S) covering the prepreg laminate with a packaging material from above the absorber; (S) vacuuming the packaging material and heating the prepreg laminate at a temperature lower than a curing temperature of a prepreg; (S) then removing the packaging material; (S) peeling off the absorber; (S) attaching, to a surface of the prepreg laminate with the absorber peeled off, a release member that does not transfer silicone or fluorine to a resin, and then (S) curing the prepreg laminate to mold the composite material; and (S) peeling off the release member from the composite material before bonding the member.

Composite pre-bonding treatment method

A composite material includes a laminate in which fiber sheets are laminated. The laminate has a bendable portion that is to be bent along a mold. In a region of the laminate from an end edge on a bent side to the bendable portion, the laminate is divided into layers along a plate thickness direction of the laminate.

Composite material and method of forming composite material

The preset invention is to mold a laminate at a high accuracy by appropriately generating slippage between fiber sheets of the laminate at bending. A method for molding a laminate includes a step in which a plurality of gripping parts, which are arranged apart from each other, grip an area, wherein slippage between fiber sheets is prevented, in a plate-shaped laminate including a plurality of fiber sheets laminated each other; a step in which the plurality of gripping parts grip the area wherein slippage between the fiber sheets is prevented, while maintaining the state wherein relative moving of the area of the laminate and the gripping parts is prevented; and a step in which the gripping parts move so as to subject the laminate to bending.

Method and device for molding laminate

A composite material is capable of suppressing decrease in the strength, which is caused by bending of fibers of a skin material during the time when the composite material is cured. A composite material is provided with a honeycomb core, a first skin material, a second skin material, a thunder-resistant mesh and a resin material; and the resin material is not arranged in a neighborhood portion which is the region corresponding to the region at the front end of the honeycomb core. A first film adhesive is arranged between the first skin material and the honeycomb core; a second film adhesive is arranged between the second skin material and the honeycomb core; and a fourth film adhesive is arranged in the neighborhood portion of the resin material in a weight per square meter, which is lower than those of the first film adhesive and the second film adhesive.

Composite material and method for curing composite material

A pressurized structure panel for forming a pressurized space pressurized inside includes a panel structure having a panel body to receive the pressure, a rib provided in the panel body, and a hollow part formed by the panel body and the rib, a radiation shielding material provided in the hollow part, and a debris bumper provided outside the panel structure and provided spaced apart from the panel structure by a certain spacing. The radiation shielding material includes a material containing hydrogen atoms in molecules.

Pressurized structure panel and cylinder

A method of the invention produces a composite material conjugate in which a first composite material and a second composite material are adhered without using an adhesive, wherein a first prepreg laminate to which a release member is attached is cured to form the first composite material, the release member being made of a material that does not transfer silicone and fluorine to the first prepreg laminate, after detaching the release member from the first composite material, surface treatment that imparts polar functional groups to the surface of the first composite material to which the release member was bonded is carried out to activate the surface, a second prepreg laminate is placed directly on the activated surface of the first composite material, and the second prepreg laminate is cured to form a second composite material adhered to the first composite material.

Method for producing composite material joined body

Rotating machine for vehicle

The motor includes a sealing material (dry body of a liquid gasket) interposed between a joint surfaceof a motor housingand a joint surface of an inverter housing, and an O-ring. The O-ringis interposed between the motor housingand the inverter housing and disposed so as to surround the communication portof the refrigerant flow path. The motor housingincludes a groovedisposed between the sealing material and the O-ringon the joint surfacein a surface direction of the joint surface

Electric device and motor

A method is for manufacturing a honeycomb structure including a core material in which a hole is formed to penetrate in a thickness direction and is arranged in a plane direction, and a skin material that is stacked on a surface of the core material. The skin material includes a thermosetting resin. The method includes half-curing the thermosetting resin by placing the skin material in a bag and heating the skin material in a state where an inside of the bag is evacuated and an outside of the bag is under an atmospheric pressure; stacking the skin material in which the thermosetting resin is half-cured onto a side of the surface of the core material; and bonding and integrating the core material and the skin material with each other by pressurizing and heating the stacked core material and skin material with the use of a sealing pressurizing heating facility.

Method for manufacturing structure, method for preparing skin material, and method for setting heating condition for skin material

The present invention addresses the problem of providing a method for molding, using a honeycomb core, a composite material structure that is high-quality, low cost, and leaves less voids. The present disclosure addresses the problem of providing a method for molding, using a honeycomb core, a composite material structure with which it is possible to reduce dimples in a composite material skin at low cost. According to a method for molding a composite material structure of the present disclosure, an uncured composite material honeycomb sandwich panel in which prepreg is laminated on upper and lower surfaces of a honeycomb core via an adhesive is covered with a vacuum bag and placed in an autoclave. After that, the vacuum bag is evacuated and, while the evacuation is being continued, is heated and pressurized by the autoclave to cure a matrix resin of the prepreg and achieve adhesion to the honeycomb core.

Method for molding composite material structure

The embodiment includes: a planar graphite heater; a clamp device that moves the graphite heater, which is arranged between a first bonding surface Wof a first composite material member and a second bonding surface of a second composite material member facing the first bonding surface, in a traveling direction with the graphite heater being in contact with the first bonding surface and the second bonding surface; and a control unit that controls the graphite heater to heat the first bonding surface and the second bonding surface while the graphite heater is in contact with the first bonding surface and the second bonding surface.

Composite material bonding apparatus and composite material bonding method

Provided is a preform member bonding method of bonding a preform member and another member with an adhesive in an RTM process. The preform member bonding method includes increasing viscosity of the adhesive by heat-treating only the adhesive in advance before inserting the adhesive between bonding surfaces of the preform member and the other member.

Preform member bonding method

The present invention aims to sufficiently impregnate each layer of a fiber substrate group composed of fiber substrates, which are used for fiber-reinforced resin molding by a resin injection method, with a resin. To successively stack a plurality of fiber substrates, each of which has arrayed fiber bundles and is a material composing a fiber-reinforced resin along with a resin, with their fiber bundles oriented in the same direction, the plurality of fiber substrates are integrated in a state where border zones between the fiber bundles adjacent to each other in an array direction are aligned with one another among the fiber substrates.

Fiber substrate stacking method, manufacturing method of roll of fiber substrate group, fiber substrate group, and aircraft

Growing community of inventors

Tokyo, Japan

Hiromichi Akiyama