Toray Industries, Inc.

Tokai National Higher Education and Research System

Kyowa Industrial Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Honda Motor Co., Ltd.

Aisin Seiki Kabushiki Kaisha

Shimano Inc.

Subaru Corporation

Suzuki Motor Corporation

Mitsubishi Motors Corporation

Dome Co., Ltd.

National University Corporation Tokai National Higher Education and Research System

Yukitane Kimoto

Nobuhiko Shimizu

Yoshito Kuroda

Kosaku Hashimoto

Toru Yamanaka

Barry Lett

Yutaka Ochi

Gordon Murray

Frank Coppuck

Zachary Seward

Andy Jones

Kevin Richards

Yuki Sakamoto

Mark Lewis

Koji Shiraki

Yuji Hotta

Hiroki Wakabayashi

Hiroshi Kiyama

Yasuyuki Kawanomoto

Mariko Terada

Daisuke Shimamoto

Atsuhiko Yamanaka

Koji Yamaguchi

Minoru Nakamura

Hideo Matsuoka

Toshihide Sekido

Takao Sano

Tomoya Yabu

Tsubasa Ono

Toshio Muraki

Shigeru Kawashima

Kazuaki Amaoka

Shigeo Iwasawa

Hiroshi Ohnishi

Kanji Takaoka

Shusuke Sanai

Yoshinori Yamamori

Tomomi Ichida

Shin Tanabe

Yasuyuki Toyoda

Kohzou Murata

Hideaki Maeda

Hiroshi Yuchi

Yasuhiro Kira

Yuugo Enomoto

Hotta Yuji

This composite structure is characterized in that: an internally inserted component, which is molded from a resin material having a tensile elongation of 10% or more, is placed inside a metal member having a hollow closed cross-section such that an external load can be received by both the internally inserted component and the metal member, and the outer shape of the internally inserted component occupies 50% or more relative to the hollow closed cross-section of the metal member as projection area ratio. By disposing the resin-made internally inserted component having a specific toughness at a specified state inside the metal member having a hollow closed cross-section, especially when a collision load occurs, the metal member undergoes ductile deformation and the internally inserted component also deforms correspondingly, and thus the waveform of the load-displacement curve can approach an ideal rectangular waveform, and excellent impact energy absorbing performance can be exhibited.

Composite structure

A method for measuring a fiber orientation degree includes: irradiating a sample formed of a composite material containing discontinuous carbon fibers with an X-ray to acquire an X-ray diffraction image; calculating an angle (2&#x3b8;)of a peak originating from a crystal face of graphite; calculating a correction coefficient &#x3b4; of a thickness of the sample; calculating an upper limit (2&#x3b8;)of the peak of the crystal face of graphite; calculating a diffraction sensitivity I(&#x3d5;) of the peak originating from the crystal face of graphite by correcting an integrating range with the correction coefficient &#x3b4; and integrating the X-ray diffraction image with respect to a diffraction angle (2&#x3b8;); and calculating a fiber orientation degree Sd(&#x3b2;) by the method of Hermans from the diffraction sensitivity I(&#x3d5;).

Method for measuring fiber orientation degree, fiber orientation degree measurement apparatus, and control computer program for fiber orientation degree measurement apparatus

A method for producing a preparation for fiber length measurement includes: a preliminary dispersion process of adding fibers and a dispersion medium with a viscosity of 500 Pa&#xb7;s to 10,000 Pa&#xb7;s to a sealable container so as to give a concentration of the fibers of 0.1% by mass or less and shaking the container to prepare a preliminary dispersion liquid; a dispensing process of dispensing part of the preliminary dispersion liquid to another sealable container; a dilution process of adding the dispersion medium to the dispensed preliminary dispersion liquid so as to give a concentration of the fibers of 0.005% by mass or less and shaking the container to prepare a dispersion liquid for measuring fiber length; and a casting process of spreading part of the dispersion liquid for measuring fiber length onto a base having light transparency.

Method for producing preparation for fiber length measurement, method for preparing dispersion liquid for fiber length measurement, method for measuring fiber length, preparation for fiber length measurement, fiber length measurement apparatus, and control computer program for fiber length measurement apparatus

To provide a vehicle floor panel having a certain rigidity and being less prone to deformation during manufacturing and deformation when the vehicle floor panel installed in a vehicle is subjected to loads in various directions from outside the vehicle. A vehicle floor panel includes a floor panel main body made of a fiber-reinforced resin, a plurality of recesses-to-protruding on one of a lower surfaceand upper surface of the floor panel main body and depressed on the other of the surfaces and arranged by being spaced apart from one another, and ribs-to-connecting two adjacent ones of the recesses on the one of the surfaces of the floor panel main body.

Vehicle floor panel

An energy-absorbing member has a structure in which a plurality of fiber reinforced resin layers are layered in a thickness direction of said member and includes as the plurality of fiber reinforced resin layers, at least a plurality of unidirectional materials each including unidirectionally aligned reinforcing fibers and a resin and a plurality of cross materials each including a reinforcing fiber woven fabric and a resin, wherein lengths of the plurality of unidirectional materials in an external-loading direction are sequentially changed.

Energy-absorbing member and method of producing same

A fiber-reinforced resin structure having a hole into which a connector that connects to another member is inserted, wherein a bearing strength at a part of an inside surface of the hole on which a load from the connector acts, represented by a stress at which displacement of the part of the inside surface of the hole starts increasing even without the load acting on the part of the inside surface of the hole from the connector increasing, is less than a breaking strength of a fiber-reinforced resin constituting that part of the structure.

Fiber-reinforced resin structure

A structure for a passenger vehicle interior is a structure for constituting the vehicle interior of a passenger vehicle, is formed in a monocoque structure in which the entire structure from the front side to the rear side of the vehicle interior is integrally formed by a fiber-reinforced resin, has a bowl-shaped structure part which is provided at least on the front side among the front side and the rear side of the structure and which opens toward the rear side, and has a side-wall part formed as a vertical wall that is continuous with the bowl-shaped structure part and extends in a front-rear direction of the structure, at each of both side parts of the structure, and a manufacturing method therefor.

Structure for passenger vehicle interior, and manufacturing method therefor

Automobile control panel

Passenger car

Automotive seat

An FRP panel for an automobile, comprising a panel element to which a difference in rigidity and/or a difference in strength is provided between a first FRP layer on a first surface side and a second FRP layer on a second surface side on the opposite side of the first surface. The FRP panel for the automobile having a crushable structure suitable for absorbing impact can be realized, and the impact on a pedestrian in collision can be suppressed by properly absorbing the impact to protect the pedestrian.

FRP panel for automobile

Disclosed are a method for manufacturing a crank for a bicycle by bonding structural members to each other with an adhesive comprising; a step for applying the adhesive in a line-like or dot-like form in correspondence with an intervention region of the adhesive; a step for disposing a fabric in correspondence with the intervention region of the adhesive; a step for expanding the adhesive applied in a line-like or dot-like form in the fabric; and a step for bonding the structural members to each other with the adhesive expanded in the fabric, and a crank for a bicycle manufactured by the method. When the crank for a bicycle is manufactured by bonding the structural members to each other with the adhesive, the adhesive can be applied easily at a high accuracy and a good repeatability, variations of application condition and amount of used adhesive can be suppressed, and variation in quality can be suppressed.

Crank for bicycle and method for manufacturing the same

A bonnet for an automobile, the bonnet having an outer member made from fiber reinforced plastic (FRP) and an inner member made from FRP, joined to the back-surface side of the outer, wherein the inner is separated into two parts in the forward and backward direction of a vehicle body. The bonnet can satisfy impact absorbing performance and predetermined required performance for deformation in a collision accident etc., and can improve easiness of production.

Bonnet for automobile having automobiles that protects the heads of pedestrians

A shock absorbing tube comprising a cylindrical main body made of fiber-reinforced plastic and an end member formed internally at an end of the main body, the main body and the end member are capable of separating from each other at an interface therebetween upon the application of a predetermined maximum axial force (Fm) and is capable of moving axially by sequentially enlarging the main body at a predetermined successive axial force (Fs), wherein the main body comprises reinforcing fibers helically wound at an angle of &plusmn;5-30&deg; with respect to the axial direction of the main body and the end member is made of a metal or comprises reinforcing fibers hoop wound at an angle of &plusmn;70&tilde;90&deg; with respect to the axial direction of the end member. The shock absorbing tube is useful for human safety, in particular, for use of propeller shaft and collapsible handle of automobiles.

Shock absorbing tube

A panel for a truck having an FRP plate including a woven fabric of reinforcing fiber as a main rigid member, a cargo compartment for a truck using the panel and a truck equipped with the cargo compartment for a truck. The panel and the cargo compartment are light, have sufficient rigidity and strength and excellent in processing and fabricating properties.

Panel and cargo compartment for a truck

Growing community of inventors

Nagoya, Japan

Yukitane Kimoto