Ihi Corporation

The University of Tokyo

Ihi Aerospace Co., Ltd.

Ken Automation, Inc.

Koichi Inagaki

Hiroyuki Hishida

Takeshi Nakamura

Hiromasa Suzuki

Yutaka Ohtake

Hiroaki Hatanaka

Akinori Tsuda

Takashi Michikawa

Yuichi Yamaguchi

Yukie Nagai

Fumiaki Watanabe

Hiroki Kawai

Kotaro Morioka

Takashi Harada

Yu Hasegawa

Mamoru Izumi

Hirokazu Karasawa

Yu Shigenari

Agamu Tanaka

Yuta Yamauchi

Suguru Kondo

Tadahiro Ishigure

Akiyoshi Sato

Shinji Muto

Kunihiko Takao

A material shape simulation apparatus for simulating deformation of a three-dimensional woven fiber material is provided and includes: an orientation vector field generation unit generating a model shape orientation vector field on three-dimensional meshes of a model shape of a three-dimensional woven fiber material obtained by stacking sheets of two-dimensional woven fabric made of X-yarn and Y-yarn and binding them with Z-yarn; a parameterization unit that searches for a gradient vector for calculating a material shape orientation vector field, being an orientation vector field of a material shape before deformation of the model shape, from the model shape orientation vector field; and an orientation vector updating unit that updates the model shape orientation vector field by applying a condition of preserving a volume between the model shape orientation vector field and the material shape orientation vector field and a condition that neither the X-yarn nor the Y-yarn expands or contracts.

Material shape simulation apparatus, material shape simulation method, and three-dimensional woven fiber component manufacturing method

Provided are a method and device for detecting arrangement disorder of fibers in a conductive composite material. A coil () is disposed at a position at which the coil () faces the conductive composite material, and thereby a current can be applied to the conductive composite material. Thus, work or the like for attaching electrodes to the conductive composite material is not required. As a result, the arrangement disorder of the fibers in the conductive composite material can easily be detected. A method for detecting meandering of fibers in a conductive composite material includes a step of disposing a magnetic field sensor () at a position at which the magnetic field sensor () faces a surface (Sa) of the conductive composite material such that a direction (D) of a magnetosensitive axis is horizontal with the surface (Sa) and is parallel to coil faces (). Therefore, the magnetic field sensor () measures a magnetic field, and thereby a portion at which the arrangement disorder of the fibers in the conductive composite material is present can be detected.

Method for detecting arrangement disorder of fibers in conductive composite material, and device for detecting arrangement disorder of fibers in conductive composite material

A design support apparatus supporting designing of a product which uses a fiber material includes a processor that creates a predicted shape model by predicting a shape of the product before a deformation processing. The processor: creates a 3-dimensional shape model of the product; creates curved shape models by separating the 3-dimensional shape model into two or more fiber layers; sets a correspondence relationship between the curved shape models; creates an orientation vector field in the curved shape models; and predicts the shape of the product before the deformation processing by developing the curved shape models on a flat surface based on the correspondence relationship between the curved shape models and the orientation vector field in the curved shape models, and creates the predicted shape model based on the predicted shape.

Support apparatus, design support method, and program

Provided is a method for inspecting an electroconductive composite material including disposing a detection magnetic field measurement unit, disposing a correction magnetic field measurement unit, applying a current, acquiring a detection magnetic field strength, acquiring a correction magnetic field strength, and detecting a portion in which arrangement of carbon fibers is disordered. The operation includes calculating a correction coefficient using the correction magnetic field strength and correcting the detection magnetic field strength using the correction coefficient.

Method for inspecting electroconductive composite material and device for inspecting electroconductive composite material

A non-destructive inspection apparatus is configured to perform non-destructive inspection of a bonded place between a base material and a bonding material of a gas turbine engine part formed by bonding the bonding material formed of a metal material to the base material formed of a fiber-strengthened material, and includes a moving apparatus configured to move the gas turbine engine part, a light source apparatus configured to emit a laser beam, an infrared imaging apparatus configured to image the gas turbine engine part to which the laser beam is radiated, and a control and arithmetic processing apparatus configured to store form data of the gas turbine engine part, control the moving apparatus such that the laser beam is radiated to the bonded place based on the form data, and obtain a result showing a state of the bonded place based on imaging data obtained by the infrared imaging apparatus.

Non-destructive inspection apparatus

A pair of electrodes is connected to a test specimen in order to apply an electric current to the test specimen in the direction of a conductive fiber of each conductive fiber woven fabric of a plurality of prepregs as targets for verification of the presence or absence of waviness, among a plurality of prepregs constituting the test specimen composed of a conductive composite material, and then a magnetic field sensor is relatively scanned over the test specimen, while applying an electric current between the pair of electrodes, to determine a portion of the test specimen where a magnetic field variation is detected by the scanning of the magnetic field sensor as a portion where waviness of the conductive fibers of the conductive fiber woven fabric of the plurality of prepregs as targets for verification of the presence or absence of waviness is present. Thus, it is possible to grasp, for example, the condition of fibers of the conductive composite material in the test specimen as a whole.

Fiber waviness detection method and apparatus for conductive composite materials

An image analysis apparatus, which analyzes orientations of fiber bundles of X-yarns and Y-yarns from a three-dimensional image of a woven fabric made of fiber bundles of the X-yarns, the Y-yarns, and Z-yarns, includes: a binarization unit that binarizes the three-dimensional image; an overlapping area extraction unit that extracts an overlapping area from the binarized image; a reference direction determination unit that averages an overlapping direction of each voxel included in the overlapping area and determines the averaged direction as a reference direction; a Z-yarn removal unit that removes the Z-yarns from the binarized image by applying a directional distance method on a reference plane perpendicular to the reference direction; and a fiber bundle orientation estimation unit that applies the directional distance method on the reference plane and estimates the orientations of the fiber bundles of the X-yarns and the Y-yarns based on a calculated directional distance.

Image analysis apparatus, image analysis method, and program

Proposed are an image analyzing apparatus and program in which the orientation of fiber bundles can be easily analyzed from a three-dimensional image of CMC. Provided is an image analyzing apparatus for analyzing an orientation of a fiber bundle from a three-dimensional image of a fiber-reinforced composite material, comprising an input unit which inputs the three-dimensional image, a binarization processing unit which binarizes the input three-dimensional image and acquires a binary image, an orientation estimation processing unit which estimates each orientation of foreground pixels in the binary image based on an orientation detection filter having a parameter for causing a shape of a detected cross section to have anisotropy, a center extraction processing unit which extracts center pixels showing a center of the fiber bundle from a foreground pixel group, in which the orientation thereof was estimated, based on the orientation detection filter, a fiber bundle connection processing unit which deems center pixels having a same or similar orientation to be a same fiber bundle with regard to the extracted center pixel group, and connects the center pixels indicating the same fiber bundle, and a meander determination processing unit which calculates a meandering amount of the connected center pixel group indicating the same fiber bundle.

Image analyzing apparatus and program

An image analyzing apparatus, a non-transitory computer readable medium storing a program, and a method are provided for extracting voids from a three-dimensional image of a fiber-reinforced composite material. The image analyzing apparatus includes a processor which executes image processing to the three-dimensional image. The processor binarizes the three-dimensional image and creates a binary image, transforms the binary image into a distance and creates a distance image, executes closing processing to the binary image by using the distance image, extracts voids from differences between images before and after the closing processing, among the extracted voids, classifies voids that are adjacent to a background voxel as open voids, and classifies voids that are not adjacent to a background voxel as closed voids, and executes opening processing to the open voids in order to eliminate fake voids.

An additional padis additionally and integrally arranged from an outer surface of a flangeopposite to a contacting side of the flangeto a small-diameter curved surface of a bendand from there to an end of an outer surface of a part body. On an outer surface side of the additional pad, a fastening seatis formed by machining. An area end PAe of a processed area PA formed by machining is positioned on the part bodybeyond the bend

Molded part

A transducer main body has, on a front end side thereof, an oscillating plane having a bent shape in a side view and corresponding to a larger-diameter curved surface formed at a bend of a laminated part. Over the oscillating plane of the transducer main body, a plurality of piezoelectric oscillators is distributed in a matrix in a bent direction and a width direction. In each oscillator group, a controlling unit switches the piezoelectric oscillators to transmission and reception piezoelectric oscillators by turns in the width direction according to a preset transmission/reception pattern and processes a received signal from the reception piezoelectric oscillator according to an aperture synthesis method.

Growing community of inventors

Koto-ku, Japan

Koichi Inagaki