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DEVELOPMENT OF LOW FREQUENCY ACOUSTIC MICROSCOPE

Research Project

Project/Area Number 08555024
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Materials/Mechanics of materials
Research InstitutionNAGOYA INSTITUTE OF TECHNOLOGY

Principal Investigator

KAWASHIMA Koichiro  NAGOYA INSTITUTE OF TECHNOLOGY,FACULTY OF ENGINEERING,PROFESSOR, 工学部, 教授 (50023239)

Co-Investigator(Kenkyū-buntansha) OKADE Motohiro  AISIN SEIKI CO., R&D CENTER,RELIABILITY DEPARTMENT,MANAGER, 技術研究所, 課長
ISHIKAWA Isao  HITACHI CONSTRUCTION MACHINERY FA DIVISION,SENIOR RESEARCHER, FA事業部, 主任研究員
FUJII Ikuya  NAGOYA INSTITUTE OF TECHNOLOGY , FACULTY OF ENGINEERING,RESEARCH ASSOCIATE, 工学部, 助手 (90283481)
ITO Toshihiro  NAGOYA INSTITUTE OF TECHNOLOGY , FACULTY OF ENGINEERING,LECTURER, 工学部, 講師 (20203151)
Project Period (FY) 1996 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥12,600,000 (Direct Cost: ¥12,600,000)
Fiscal Year 1998: ¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 1997: ¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 1996: ¥5,000,000 (Direct Cost: ¥5,000,000)
KeywordsACOUSTIC MICROSCOPE / ULTRASOUND / NONDESTRUCTIVE EVALUATION / WAVE PROPAGATION / FLAW DETECTION / SURFACE WAVE VELOCITY / NUMERICAL SIMULATION / MATERIAL CHARACTERIZATION / 音弾性 / 音弾性応力測定
Research Abstract

The purpose of this project is to develop a low frequency acoustic microscope which measures precisely the velocities and attenuation of the leaky surface waves and visualize small defects within solids, with lens-less focused ultrasonic transducers operated at frequency less than 5OMHz and digital signal processing. The main results are summarized in the following.
1. A digital measurement system has established for precise velocity measurement of the leaky creeping, surface SY and Rayleigh waves as well as attenuation measurement of the leaky Rayleigh wave.
2. The mass density within a surface layer has estimated with the measured velocities and 'attenuation mentioned above and equation of leaky surface waves. The measured density of aluminum alloy and fused quartz agrees with bulk density within 10%.
3. With dynamic finite element method, the wave propagation in water and solid has analyzed for a model of line focused transducer and aluminum plate. The velocities of the leaky creeping and Rayleigh waves thus calculated agree with the measured within 2%.
4. The change in Young's modulus in a functional gradient Al2O3/Ni ceramics has been estimated with the measured velocities of the leaky Rayleigh and longitudinal waves.
5. A sizing method of minute defects far less than the focused beam diameter is proposed, where the reflection amplitude from defects is reduced by that of the wide plane at the same depth. The spherical voids of 50 mu m in ceramics is estimated within 20%.
6. The growth or healing of spall damage within a target plate under repeated high velocity impacts is well visualized with a lens-less point focused PVDF transducer, from which we can monitor nondestructively the evolution process of internal voids or cracks.

Report

(4 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • Research Products

    (33 results)

All Other

All Publications (33 results)

  • [Publications] 藤井・川嶋・佐藤: "PVDF線集束型超音波センサーを用いた漏洩レーリー波, 漏洩ク…" 日本機械学会論文集A. 63. 2444-2448 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 川嶋・西村・稲守・伊藤: "繰り返し高速衝撃下でのアルミニウムのスポール損傷の非破壊的観察" 材料. 47. 14-19 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Kawashima, I.Fujii et al.: "Determination of mass density and elastic constants in surface layer with…" Nondestructive Characterization of Materials. VIII. 707-712 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Kawashima, N.Nishimura et al.: "Ultrasonic imaging of spall damage under repeated impacts with C-scan…" Review of Progress in Quantitative Nondestructive Evaluation. 17. 1517-1522 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 伊藤・川嶋・森・表: "線集束超音波探触子により励起された漏洩表面波伝播の有限要素法解析" 日本機械学会論文集A. 65. 589-596 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] N.Nishimura et al.: "Sizing of a small voids less than focused beam diameter with C-scan…" Proc.1998 IEEE Ultrasonic Symposium. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Kawashima, I.Fujii, T.Satoh and M.Okade: "Measurement of acoustoelastic coefficients with leaky surface wave" Review of Progress in Quantitative Nondestructive Evaluation. Vol.16. 1135 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M.Okade, K.Kawashima, T.Satoh, I.Fujii, Y.Ikeda: "Nondestructive evaluation of surface properties of sintered Si_3N_4 ceramics with surface wave dispersion" Review of Progress in Quantitative Nondestructive Evaluation. Vol.16. 1509 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Kawashima, S.Ohta, T.Mizutani, N.Nishimura I,Ishikawa: "Enhancement of B- and C-scan images of C-SAM with an acoustic matching layer" Review of Progress in Quantiative Nondestructive Evaluation. Vol.16. 805 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] I.Fujii, K.Kawashima, T.Sato: "Velocity measurement of leaky creeping, surface SV and Rayleigh waves with line-focused PVDF transducers (in Japanese)" Transactions of the Japan Society of Mechanical Engineers. A63. 2444 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Kawashima, N.Nishimura, T.Inamori, T.Ito: "Nondestructive monitoring of spall damage within aluminum targets under repeated high velocity impacts (in Japanese)" Journal of the Society of Material science, Japan. 47. 14 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Kawashima, I.Fujii and N.Takenouti: "Determination of mass density and elastic constants in surface layer with leaky surface waves" Nondestructive Characterization of Materials. VIII. 707 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Kawashima, N.Nishimura, T.Takano, O.Nakayama: "Ultrasonic imaging of spall damage under repeated Impact with C-scan acoustic microscope" Review of Progress in Quantitative Nondestructive Evaluation. Vol.17. 1517 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Kawashima, T.Ito, N.Takenouchi, R.Omote: "Attenuation of leaky Rayleigh wave ; Experiment and numerical simulation" Review of Progress in Quantitative Nondestructive Evaluation. Vol.18. 175 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] N.Nishimura, K.Kawashima, Y.Ikeda: "Sizing of a small voids less than focused beam diameter with C-scan acoustic microscope" Proc.1998 IEEE Ultrasonic Symposium. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Kawashima, I.Fujii, N.Takenouchi: "Time-domain measurement of velocities and attenuation with low frquency acoustic microscope" Proc.1998 IEEE Ultrasonic Symposium. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 伊藤,川嶋,森,表: "有限要素法による漏洩表面波伝搬のシミュレーション" 日本機械学会論文集A. 589-596 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Kawashima,N.Nishimura,O.Nakayama: "Accumulation of spall damage under repeated impacts" Proc.Int.Symp.on Strength Theories. 133-138 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Kawashima,H.Tanaka,I.Fujii,Y.Ikeda: "Ultrasonic evaluation of elastic modulus of thin TiN layer on WC" Proc.4th Special Symp.on Advanced Materials. 271-274 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Kawashima,T.Ito,N.Takenouchi,R.Omote: "Attenuation of Leaky Rayleigh Wave;Experiment and Numerical Simulation" Review of Progress in Quantitative Nondestructive Evaluation,. 18. 175-181 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] N.Nishimura,K.Kawashima and Y.Ikeda: "Sizing of small voids less than focused beam diameter with C-scan-acoustic microscope" Proc.IEEE 1998 Ultrasonic Symposium. (in press.). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Kawashima,Fujii,N.Takenouchi and Y.Ikeda: "Time-domain measurement of Velocities and attenuation with low frequency acoustic microscope,Proc." IEEE 1998 Ultrasonic Symposium. (in press). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 岡出・川嶋・佐藤・藤井・池田: "Nondestructive Evaiuation of Surface Properties of Sintered Ceramics with Surface Wave Dispersion" Review of Progress in Quantitative Nondestructive Evaluation. 16. 1509-1515 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 川嶋・水谷・大田・石川: "超音波水浸法による材料熱劣化評価" 日本機械学会通常総会講演会. 97-1. 109-110 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 川嶋・西村・稲守・伊藤: "繰り返し高速衝撃下でのアルミニウムのスポール損傷の比破壊的観察" 材料. 47. 14-19 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 川嶋・西村・河野・中山: "Ultrasonic Imaging of Spall Damage under Repestcd Plate Inpact Tests with C-scan Acoustic Microscope" Review of Progress in Quantitative Nondestructive Evajuation. 17. (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 川嶋・田中・藤井・池田: "漏洩レーリー波分散を用いたコーティング層の材料特性評価" 新素材の非破壊評価研究委員会. 34. 1-6 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 川嶋・伊藤・森・表: "Finite Element Simulation of Leaky Surface Wave Propagation Excited by a Line-Focused Transducer" Review of Progress in Quantitative Nondestructive Evaluation. 17. 995-1002 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 川嶋・西村: "超音波B,Cスキャン像によるスポール損傷の非破壊評価" 材料力学部門講演会講演論文集. A. 551-552 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 川嶋・佐藤・藤井・岡出: "漏洩表面波を用いた応力測定" 材料力学部門講演会講演論文集. A. 567-568 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 川嶋・西村: "低周波超音波顕微鏡による微小欠陥の定量評価" 超音波による非破壊評価シンポジウム. 4. 225-232 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 川嶋・伊藤・森・表: "有限要素法による超音波伝播の数値シミュレーション" 日本非破壊検査協会春期大会講演概要集. (印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 岡出・川嶋・佐藤・藤井・池田: "Nondestructive Evaluation of Surface Properties of Sintered Silicon Nitride with Surface Wave Dispersion" Review of Progress in QNDE. 16(in press). (1997)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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