Mitsubishi Heavy Industries Limited

Akita University

Tsuchiya Co., Ltd.

Mikio Muraoka

Nobuyuki Kamihara

Naomoto Ishikawa

Toshiyuki Takayanagi

Kiyoka Takagi

Sota Kamo

Hideki Horizono

Hiroaki Hayashi

Kotaro Tsuji

Osamu Yoshida

Takashi Ishida

Toshio Abe

Kengo Yamaguchi

Yukihiro Yoshida

Wataru Nishimura

Mitsutoshi Jikei

Kazuya Matsumoto

Tomoharu Dengo

Makoto Yamaguchi

A joint portion evaluating method for measuring and evaluating a joint state of a joint portion at which a first joint body and a second joint body are joined together, the joint portion evaluating method including the steps of: acquiring as a reference value a capacitance value of the joint portion in a reference measurement state serving as a reference for measurement conditions; changing a measurement state from the reference measurement state and acquiring as a measured value a capacitance value of the joint portion in a changed measurement state arising after the change of the measurement state; deriving as a measurement evaluation value a value obtained by referencing the measured value with the reference value; and performing an evaluation based on the derived measurement evaluation value.

Joint portion evaluating method and joint portion evaluating device

A heating device includes a magnetic field heating coil that inductively heats a composite material by a magnetic field. The composite material has a length in a depth direction and a length in a width direction orthogonal to the depth direction. The magnetic field heating coil has a first coil part provided along the width direction, and a pair of second coil parts provided on both sides of the first coil part in the width direction so as to be continuous with the first coil part, the second coil parts being tilted a predetermined angle θ to one side in the depth direction with respect to the width direction. The first coil part and the second coil parts are symmetric with respect to a line segment drawn in the depth direction at a center of the first coil part in the width direction.

Heating device

A crystallinity measurement device includes a Raman spectroscopy unit configured to acquire a Raman spectrum of resin-containing material including crystalline thermoplastic resin; and an analysis unit configured to calculate crystallinity of the crystalline thermoplastic resin based on an intensity of a low-wavenumber spectrum that is a spectrum in a region of less than 600 cm, in the Raman spectrum.

Crystallinity measurement device, resin-containing material manufacturing device, crystallinity measurement method, and resin-containing material manufacturing method

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 method for manufacturing a resin sheet includes a coating step; a heating step; and a pressurizing step. In the coating step, linear metal nanomaterial is coated on a surface of a resin film having thermal plasticity. In the heating step, the resin film having the linear metal nanomaterial coated on the surface thereof is heated and softened. In the pressurizing step, the resin film having the linear metal nanomaterial coated on the surface thereof is pressurized to press the linear metal nanomaterial along a direction orthogonal to the surface on which the linear metal nanomaterial is coated. Thus, the coated linear metal nanomaterial penetrates the resin film to obtain the resin sheet containing the linear metal nanomaterial.

Method for manufacturing resin sheet, resin sheet, method for manufacturing structural body, structural body, and airframe of aircraft

Provided is a method of manufacturing a metal nano coil which is suitable for mass production and results in a lower manufacturing cost. The method of manufacturing a metal nano coil includes the steps of: forming, with tension applied to a core member composed of nanofiber of a polymer, a metal thin film on a surface of the core member to fabricate a metal-covered nanofiber; reducing the tension of the metal-covered nanofiber; and heating, with the tension reduced, the metal-covered nanofiber to at or above a boiling point or a thermal decomposition temperature of the polymer and at or below the melting point of the metal thin film to vaporize the core member and shrink the metal thin film into a coil form, so that a hollow metal nano coil is produced.

Method of manufacturing metal nano coil

Provided is an adhesive that can provide quick bonding between thermoplastic resins and excellent bond strength, a structure having adhesion provided by the adhesive, and an adhesion method using the adhesive. The adhesive bonds a first member () containing a thermoplastic resin or a carbon fiber reinforced thermoplastic resin and a second member () containing the thermoplastic resin or the carbon fiber reinforced thermoplastic resin. The adhesive includes a thermoplastic resin as a main component containing a metal nano material that absorbs electromagnetic waves and generates heat.

Adhesive and structure, and adhesion method

Growing community of inventors

Akita, Japan

Mikio Muraoka