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2002 Fiscal Year Final Research Report Summary

Basic Research on the Nondestructive measurement and inspection method by the use of resonant photoacoustic instrumentation scheme

Research Project

Project/Area Number 13650044
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied optics/Quantum optical engineering
Research InstitutionTohoku Gakuin University

Principal Investigator

HOSHIMIYA Tsutomu  Faculty of Engineering, 工学部, 教授 (40118336)

Co-Investigator(Kenkyū-buntansha) AWANO Teruyoshi  東北学院大学, 工学部, 教授 (50176004)
HIWATASHI Yoichiroh  Faculty of Engineering, 工学部, 助教授 (30048813)
ENDOH Haruo  Faculty of Engineering, 工学部, 教授 (20137582)
Project Period (FY) 2001 – 2002
Keywordsphotoacoustic / resonance / nondestructive / instrumentation / laser
Research Abstract

In this research subject, a new resonant photoacoustic spectroscopy (R-PAS) method was proposed. And the excitation of the resonant acoustic mode of the solid specimens with open and close structures was performed.
In the year 2001, modulation frequency of the laser beam was tuned to the resonance frequency 975Hz for a metal tube with the length and inner diameter of 170mm and 6 mm, respectively. The Q-value for the resonance was about 10. On the other hand, The Q-value of the acoustic resonance for the open pipe with an artificial surface defect was decreased up to about 4. The imaging experiment was also performed by scanning with the slide stages with a fixed modulation frequency of the laser beam.
In the year 2002, ultrasonic range experiments were carried out in addition to those performed in 2001. Experiments by the use of capacitive transducers were not sufficiently done, because it is not commercially sold. However, the feasibility of precise measurement of the length of the specimen was shown by exciting an inner wall of the tiny pipe-shaped object with a modulated laser beam at the ultrasonic frequency of 40KHz. Furthermore, the feasibility of the method to apply to detect the finished size of the small pipe-shaped specimen nondestructively, such as fuel injection nozzle, was also demonstrated.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] T.Hoshimiya, K.Ishikawa, S.Kikuchi: "Resonant Photoacoustic Detection using Open-pipe Acoustic Resonance and its Applications"Analytical Sciences. Vol.17, no.4. S469-s471 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ishikawa, S.Kikuchi, T.Hoshimiya: "Nondestructive Evaluation of Pipe-shaped Structured Materials by the Use of Acoustic Resonance Excited by Photoacoustic Effect"Proceedings of APCFS & ATEM '01. 162-166 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 菊地聡, 星宮務: "共鳴型光音響効果を用いた計測法の検討"東北学院大学環境防災工学研究所紀要. vol.13. 63-72 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Hoshimiya(共著): "Acoustical Imaging, vol.25"M.Halliwell, P.N.T.Wells (Ed). 5 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Hoshimiya, K.Ishikawa and S.Kikuchi: "Resonant Photoacoustic Detection using Open-pips Acoustic Resonance and its Applications"Analytical Sciences. Vol.17, no.4. S469-s471 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Ishikawa, S.Kikuchi and T.Hoshimiya: "Nondestructive Evaluation of Pipe-shaped Structured Materials by the Use of Acoustic Resonance Excited by Photoacoustic Effect"Proceedings of APCFS & ATEM '01. 162-166 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Kikuchi and T.Hoshimiya: "On the Detection Method using Resonant Photoacoustic Effect [in Japanese]"Bulletin of Institute for Environmental Protection, Tohoku Gakuin University. vol.13. 63-72 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Hoshimiya, M.Halliwell and P.N.T.Wells Ed.: "Resonant Photoacoustic Detection and Imaging Scheme"Acoustical Imaging, vol.25, (Kluwer/Plenum Press). 203-207 (2001)

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

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Published: 2004-04-14  

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