Mitsubishi Aircraft Corporation

Mitsubishi Heavy Industries Limited

Akita University

Mitsubishi Heavy Industries Plastic Technology

Mitbushi Aircraft Corporation

Mitsubishi Heavy Industries Machinery Systems, Ltd.

Wataru Nishimura

Hideo Yamakoshi

Takashi Ishida

Daisuke Tanaka

Naomoto Ishikawa

Toru Hashigami

Yuji Asahara

Takeyasu Tarumi

Hiroshi Rikukawa

Masahiro Bessho

Atsuhiro Iyomasa

Yasunori Watanabe

Yuichiro Kamino

Jun Kawaguchi

Kiyoka Takagi

Nobuyuki Kamihara

Sota Kamo

Toshikatsu Nohara

Toshiyuki Takayanagi

Tomonori Okumura

Tamaki Tsuzuki

Kengo Nomiya

Noritomo Takata

Hideo Imamura

Naoki Taniguchi

Kosuke Ikeda

Toshihiko Kariya

Naoki Toda

Yukio Takeuchi

Hideki Horizono

Naoaki Fujiwara

Kazuki Ohashi

Mikio Muraoka

Yasue Takeuchi

Tsukasa Katsumata

Yukihiro Yoshida

Tooru Hashigami

Shiki Matsuo

Tomoharu Dengo

Yoshiyuki Takesako

A method for forming a composite material including reinforcing fibers includes connecting end portions of the reinforcing fibers with equipotential materials to form an electroconductive loop including the reinforcing fibers in the composite material before reaction; and applying a magnetic field in a direction intersecting a plane formed by the electroconductive loop.

Composite material forming method

A desired shape can be easily realized, and a decrease in strength can be inhibited. A method for producing a composite material includes: an insertion step of inserting an inner member in which a second reinforcing fiber is impregnated with a resin into a space of an outer member that is formed of a woven first reinforcing fiber extending in an undulating manner, the outer member including an opening that is provided at at least one end portion and the space that communicates with the opening; and a composite material forming step of forming a composite material in which the outer member and the inner member are joined to each other by curing the resin of the inner member to join the outer member and the inner member to each other.

Method for producing composite material

A pultruded material includes a thermosetting resin, and a reinforced fibers impregnated with the thermosetting resin. The thermosetting resin includes a solid resin that contains a fire-resistant resin having a median oxygen index of equal to or higher than, a long-chain fatty acid ester that has a median number of carbons per molecule within a range equal to or more than 3 and equal to or less than 1000, and that has a median flash point within a range equal to or higher than 150 degrees Celsius, and an additive that has a median BET specific surface area within a range equal to or more than 150 m/g and equal to or less than 250 m/g, and that has a median primary particle diameter within a range equal to or more than 5 nanometers and equal to or smaller than 20 nanometers.

Pultruded material and method for manufacturing pultruded material

To provide a jig for forming a sealant layer which enables to quickly and accurately form a sealant layer having a required film thickness. The jig includes: a sealant cupthat overlays a sealantaround a collar; a cup holderthat determines a position of the sealant cupwith respect to a fastener member; and a dummy cupthat determines a position of the cup holderwith respect to the fastener member. The cup holderis determined in position with respect to the fastener memberby being guided along the dummy cupdetermined in position with respect to the fastener member. The sealant cupis guided along a guide of the cup holderso as to overlay the sealantaround the collarafter removing the dummy cupfrom the cup holderdetermined in position with respect to the fastener member

Jig for forming sealant layer for lightning protection fastener, method for forming sealant layer for lightning protection fastener, and wing of aircraft

To provide a jig for forming a sealant layer for a lightning protection fastener which enables to quickly and accurately obtain a sealant layer having a required thickness. A guide jigis used to form a sealant layeraround a fastener memberthat passes through and fastens a plurality of members constituting an airframe of an aircraft, the jig including: a cupincluding a cavityto be filled with an uncured sealant; and a guide that is provided within the cavityand engaged with the fastener memberso as to match a center axis of the cavitywith a center axis of the fastener member

Jig for forming sealant layer for lightning protection fastener, method for forming sealant layer for lightning protection fastener, lightning protection fastener, and wing of aircraft

A method for manufacturing a fiber-reinforced composite material of the present invention includes: the step (a) of placing a non-woven fabric N made of a reinforcement fiber in a movable mold; and the step (b) of moving the movable moldtoward a fixed moldto close the mold and then injecting a thermoplastic resin into the mold to obtain a molded article formed of the non-woven fabric N and the thermoplastic resin. The mechanical strength of the obtained fiber-reinforced composite material can be enhanced by applying an injection compression molding process as the injection molding process in the step (b).

Method for manufacturing a fiber-reinforced composite material

To provide a lightning protection fastener or the like, that can reliably seal an arc between the cap and a member such as a wing panel. An end partA of a capon an opening side, the end partA facing a member(or member), includes a planeorthogonal to an axis line of the capA and a tapered faceformed on an outer circumferential side of the plane. A sealantthat spills out of the capA upon mounting the capA is present between the tapered faceand a surfaceof the member(sealantS).

Lightning protection fastener and cap for lightning protection fastener

A sealantfilled into a capA is caused to overflow through both an opening in a first end portionof the capA and a through-holeof the capA when the capA is pressed against a fastener member. With regard to the capA, a ratio between inside diameter Dof the opening on the side of the first end portionand hole diameter Dof the through-holein the second end portionis set as follows: 0.10&#x2266;D/D&#x2266;0.27.

Lightning protection fastener and mounting method thereof

There are provided a lightning-resistant fastener and a cap, which, while assuring sufficient insulation properties, provide improved workability and highly stable quality to thereby enable a reduction in the manufacturing cost of an airframe, and a method of mounting the lightning-resistant fastener. A holeis formed in a cap, and a screw grooveis formed in the hole. The configuration enables the capto be reliably and easily positioned and installed on a fastener memberand reliably prevents the capfrom coming off after the installation thereof. This improves the workability to reduce the production cost while assuring sufficient insulation properties and enables the capto be installed with stable quality irrespective of workers. Preferably, the capis made of a resin in view of mass producibility, weight reduction, and the like.

Lightning-resistant fastener, cap, and method of mounting lightning-resistant fastener

A lightning-resistant fastener, a cap, a fastener member, and a method for attaching the lightning-resistant fastener are provided, which enhance workability and quality stability besides reliably securing an insulating property, and can lead to enhancement in safety of an airframe and reduction in manufacturing cost. A head portionof a fastener main bodyincludes a head cap, and a shaft portionof the fastener main bodyincludes a shaft cap, whereby a direct strike of lightning to a fastener member, and occurrence of an arc discharge from the fastener memberin the case of a lightning strike can be suppressed. A holeis formed in the head cap, and a thread grooveis formed in the hole, whereby the head capcan be reliably and easily positioned and attached to the fastener member

Lightning-resistant fastener, cap, fastener member, and method for attaching lightning-resistant fastener

Growing community of inventors

Tokyo, Japan

Wataru Nishimura