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公开(公告)号：US20240118234A1
公开(公告)日：2024-04-11
申请号：US18275906
申请日：2022-02-09
发明人： Mikio MURAOKA , Nobuyuki KAMIHARA , Kiyoka TAKAGI , Sota KAMO , Naomoto ISHIKAWA , Hideki HORIZONO , Toshiyuki TAKAYANAGI
IPC分类号： G01N27/24
CPC分类号： G01N27/24
摘要： 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.
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公开(公告)号：US20220080682A1
公开(公告)日：2022-03-17
申请号：US17419793
申请日：2020-01-16
发明人： Toshiyuki TAKAYANAGI , Naomoto ISHIKAWA , Wataru NISHIMURA , Nobuyuki KAMIHARA , Sota KAMO , Kiyoka TAKAGI , Takashi ISHIDA , Tomoharu DENGO , Mikio MURAOKA , Yukihiro YOSHIDA
摘要： 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.
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公开(公告)号：US20210039339A1
公开(公告)日：2021-02-11
申请号：US16966257
申请日：2019-01-31
发明人： Nobuyuki KAMIHARA , Kiyoka TAKAGI , Toshio ABE , Mikio MURAOKA , Toshiyuki TAKAYANAGI , Naomoto ISHIKAWA , Wataru NISHIMURA , Sota KAMO , Tomoharu DENGO , Takashi ISHIDA , Yukihiro YOSHIDA
摘要： A method for molding a composite material includes a conductive wire-shaped material arrangement step and a magnetic field application step. The conductive wire-shaped material arrangement step is a step for arranging, in a pre-reaction composite material including reinforcing fibers, a plurality of conductive wire-shaped materials along a direction intersecting the reinforcing fibers with intervals wider than intervals of the reinforcing fibers in a plane on which the reinforcing fibers are arranged. The magnetic field application step is a step for applying a magnetic field in a direction intersecting the plane on which the reinforcing fibers are arranged.
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公开(公告)号：US20230321927A1
公开(公告)日：2023-10-12
申请号：US18025257
申请日：2021-09-10
发明人： Nobuyuki KAMIHARA , Sota KAMO , Kiyoka TAKAGI , Naomoto ISHIKAWA , Mikio MURAOKA , Yukihiro YOSHIDA
CPC分类号： B29C70/205 , H05B6/14 , H05B6/36 , B29C2791/002 , B29K2105/08
摘要： A composite material forming device forms a composite material including a resin and reinforced fibers having electrical conductivity. The composite material forming device includes: a conduction jig having electrical conductivity, the conduction jig being to be placed on a surface of the composite material so as to make a bridge between both end portions of the reinforced fibers in a fiber direction; and an electric current generating unit that generates an electric current in the conduction jig. The conduction jig placed on the surface of the composite material and the reinforced fibers form a closed loop through which the electric current flows so that the closed loop intersects the surface of the composite material.
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公开(公告)号：US20220330392A1
公开(公告)日：2022-10-13
申请号：US17616453
申请日：2020-05-25
发明人： Nobuyuki KAMIHARA , Naomoto ISHIKAWA , Kiyoka TAKAGI , Sota KAMO , Mikio MURAOKA , Yukihiro YOSHIDA
摘要： 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.
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公开(公告)号：US20220057331A1
公开(公告)日：2022-02-24
申请号：US17280038
申请日：2019-09-20
发明人： Nobuyuki KAMIHARA , Naomoto ISHIKAWA , Kiyoka TAKAGI , Sota KAMO , Makoto YAMAGUCHI , Mitsutoshi JIKEI , Kazuya MATSUMOTO , Mikio MURAOKA
摘要： 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−1, in the Raman spectrum.
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公开(公告)号：US20220299479A1
公开(公告)日：2022-09-22
申请号：US17639471
申请日：2020-08-26
发明人： Sota KAMO , Kiyoka TAKAGI , Naoki MATSUDA , Naoki MORI
摘要： A bonding layer evaluation system includes an elastic wave generation device configured to generate an elastic wave at an evaluation object including a bonding layer; an elastic wave detection device configured to detect the elastic wave from the evaluation object; and a control device configured to evaluate a parameter related to the bonding layer of the evaluation object. The control device compares an actual value of a frequency characteristic of the elastic wave detected by the elastic wave detection device and a theoretical value of the frequency characteristic of the elastic wave calculated based on a theoretical model related to the evaluation object and evaluates the parameter related to the bonding layer based on a result of the comparison.
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公开(公告)号：US20220074895A1
公开(公告)日：2022-03-10
申请号：US17415897
申请日：2019-12-20
发明人： Kiyoka TAKAGI , Sota KAMO , Naoki MATSUDA , Naoki MORI
摘要： A bonding layer evaluation system includes an elastic wave generation device configured to generate an elastic wave from a sample including a bonding layer; an elastic wave reflection body configured to reflect the elastic wave generated from the sample; a sample installation unit provided between the elastic wave generation device and the elastic wave reflection body; an elastic wave detection device disposed in a direction in which the elastic wave is reflected by the elastic wave reflection body, and configured to detect the reflected elastic wave; and a control device configured to evaluate a parameter related to the bonding layer. The control device evaluates the parameter related to the bonding layer by comparing the actual value of the elastic wave detected by the elastic wave detection device with a theoretical value of the elastic wave calculated based on a theoretical model related to the sample.
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公开(公告)号：US20210276300A1
公开(公告)日：2021-09-09
申请号：US16330523
申请日：2017-11-09
发明人： Kiyoka TAKAGI , Sota KAMO , Toshio ABE , Jun ISHIDA , Katsuya YOSHINO , Toshiaki ENOKIDA , Tetsuya KATO , Toshiyuki YAMAZAKI
摘要： A composite material includes a web portion and a flange portion disposed at an end portion of the web portion. The flange portion is formed from fiber sheets laminated and has a surface on one side in a laminating direction of the flange portion serving as an inner surface to which the end portion of the web portion is connected and a surface on the other side in the laminating direction serving as an outer surface. The inner surface of the flange portion has a tapered surface having a thickness that is reduced from a base portion to which the end portion of the web portion is connected toward a front end portion in the laminating direction. The flange portion includes an outermost surface fiber sheet disposed on the tapered surface, the outermost surface fiber sheet serving as the fiber sheet on an outermost surface that covers the tapered surface.
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公开(公告)号：US20210221077A1
公开(公告)日：2021-07-22
申请号：US16768990
申请日：2018-10-24
发明人： Sota KAMO , Kiyoka TAKAGI , Toshiyuki TAKAYANAGI
IPC分类号： B29C70/72
摘要： A method for bonding a composite material includes impregnating a first composite material containing reinforcing fibers and a second composite material containing reinforcing fibers with a resin and bonding them together. A plurality of protruding members each including a plurality of protrusions protruding in mutually different directions are placed on a surface of the first composite material, and the second composite material is placed where the protruding members are placed. The protruding members are introduced into the interior of the first composite material and the interior of the second composite material while causing the first composite material and the second composite material to come into contact with each other. The first and second composite material are bonded in a state where the protruding members are introduced therein, by curing the resin with which the first and second composite material are impregnated.
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