• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

1990 Fiscal Year Final Research Report Summary

Development of High-Speed Video Cameras and Study on Dynamic Deformation Behavior of Materials

Research Project

Project/Area Number 01850027
Research Category

Grant-in-Aid for Developmental Scientific Research (B).

Allocation TypeSingle-year Grants
Research Field 材料力学
Research InstitutionOsaka University

Principal Investigator

TANAKA Masao  Osaka University, Faculty of Engineering Science, Associate Researcher, 基礎工学部, 助手 (40163571)

Co-Investigator(Kenkyū-buntansha) 大場 信弥  (株)日立製作所中央研究所, 主任
NOGUCHI Hiroshi  Nac Inc., Image Engineering Center, Senior Engineer, 部長
MORIMOTO Yoshiharu  Osaka University, Faculty of Engineering Science, Associate Professor, 基礎工学部, 助教授 (20029573)
OHBA Shinya  Hitachi Ltd., Central Research Laboratory, Manager of Mobara Office
Project Period (FY) 1989 – 1990
KeywordsHigh speed Video camera / Image processing / Moire Method / Grid Method / Solid state Image Sensor / Strain Rate Distribution
Research Abstract

In order to study high-speed deformation of materials, high speed digital video cameras are developed by using solid-state image sensors. Three types of image sensors are used. These are a MOS type image sensor with an optical black area, a MOS type image sensor without the optical black area and a CCD image sensor with an optical black area. The frame speed and frame size are controlled by a personal computer. When a small scanning-area of the image sensors is selected, the frame speed becomes faster ; however the corresponding resolution decreases. The ideal maximum frame speed is about 12 millions frames/sec. The practical maximum speed is 420 thousands frames/sec because of noises and the wide pulse-width of the control signal. The image signal is stored in IC memories by using an A/D convertor. The image signal is sent to the same IC memories by cyclically rewriting. If a trigger is ent after the phenomenon is completed, the desired images before the trigger are easily captured. T … More he recording time is about one second.
In order to measure deformation of materials, the Fourier transform moire and grid method (FTMGM), which has been developed by the authors, is used. In this method, the interpolation between fringes or grating lines is performed very naturally by using the phases of the sinusoidal brightness distribution, which is obtained from the first harmonic of the Fourier spectrum of the image of the fringes or grating lines. The process of this method is simple and completely automated, without subjective process. Therefore this analysis can exclude human errors so that accurate measurements of displacement, strain, velocity, strain rate and height are performed. In spite of double differentiation with respect to distance and time, the accuracy is high because the smoothing of data is naturally performed in the FTMGM. The program of the FTMGM is developed on personal computers and workstations.
Some experiments such as stress wave propagation in a rubber tube and vibration of a rubber plate are performed. These may be the first report measuring strain rate distribution. Less

  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] 森本 吉春,瀬口 靖幸,山下 正晃: "高速度ビデオカメラの開発と応力波伝ぱ中のひずみ速度分布の測定" 日本機械学会論文集(A編). 55巻517号. 2027-2032 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yoshiharu MORIMOTO,Yasuyuki SEGUCHI,Toshihiko HIGASHI: "Moire Analysis of strain by Fourler Transform" JSME International Journal, Series I. Vol.32,No4. 540-546 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yoshiharu MORIMOTO,Yasuyuki SEGUCHI,Toshihiko HIGASHI: "Twoーdimensional Moire Method and Grid Method Using Fourier Transform" Experlmental Mechanics. Vol.29,No.4. 399-404 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yoshiharu MORIMOTO,Yasuyuki SEGUCHI,Toshihiko HIGASHI: "Strain Analysis by Mismatch Moire Method and Grid Method Using Fourier Transform" Computational Mechanics. Vol.6,No.1. 1-10 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yoshiharu MORIMOTO,Yasuyuki SEGUCHI,Narihiko SUESE: "Realーtime Analyzer of Displacement and Strain Distributions Using Moire Method" Experimental Techniques. Vol.15,No1. 36-39 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yoshiharu MORIMOTO,Yasuyuki SEGUCHI,Masaaki YAMASHITA: "Development of a High Speed Video Camera and Measurement of Strain Rate Distribution under Propagation of Stress Wave" JSME International Journal, Series I. Vol.34,No.1. 37-43 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 森本 吉春編著,山下 正晃,小崎 左智子,大福 幸一: "パソコン画像処理ハンドブック (2)BASICで学ぶ画像処理" 共立出版, 218 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 矢川 元基編 分担執筆 森本 吉春 他21名: "計算力学[I]ー新しい応用と展開ー" 養賢堂, 328 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yoshiharu MORIMOTO, Yasuyuki SEGUCHI and Toshihiko HIGASHI: ""Moire Analysis of Strain by Fourier Transform"" JSME International Journal, Series I. Vol. 32, No. 4. 540-546 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yoshiharu MORIMOTO, Yasuyuki SEGUCHI and Toshihiko HIGASHI: ""Two-dimensional Moire Method and Grid Method Using Fourier Transform"" Experimental Mechanics. Vol. 29, No. 4. 399-404 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yoshiharu MORIMOTO, Yasuyuki SEGUCHI and Toshihiko HIGASHI: ""Strain Analysis by Mismatch Moire Method and Grid Method Using Fourier Transform"" Computational Mechanics. Vol. 6, No. 1. 1-10 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yoshiharu MORIMOTO, Yasuyuki SEGUCHI and Masao OKADA: ""Screening and Moire Suppressing in Printing and Its Analysis by Fourier Transform"" Systems and Computers in Japan. Vol. 21, No. 2. 98-106 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sohei Ebara, Yuji Yamazaki, Takeo Harada, Noboru Hosono, Yoshiharu MORIMOTO, Li Tang, Yasuyuki SEGUCHI and Keiro ONO: ""Motion Analysis of the Cervical Spine in Athetoid Cerebral Palsy Extention-Flexion Motion"" Spine. Vol. 15. 1097-1103 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yoshiharu MORIMOTO, Yasuyuki SEGUCHI and Narihiko SUESE: ""Real-time Analyzer of Displacement and Strain Distributions Using Moire Method"" Experimental Techniques. Vol. 15, No. 1. 36-39 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yoshiharu MORIMOTO, Yasuyuki SEGUCHI and Masaaki YAMASHITA: ""Development of a High Speed Video Camera and Measurement of Strain Rate Distribution under Propagation of a Stress Wave"" JSME International Journal, Ser. I. Vol. 34, No. 1. 37-43 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yoshiharu MORIMOTO, Li TANG and Yasuyuki SEGUCHI: ""Automated 3D Measurement of Shape and Strain Distribution using Fourier Transform Grid Method"" Trans. Inst. Elec. Inf. and Comun. Eng. Ser. I.

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 1993-08-12  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi