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Detection of Harmonic Components Generated from Crept Metal Rod Using a Double-Layered Piezoelectric Transducer System

  • M. Fukuda
  • M. Nishihira
  • K. Imano
Conference paper
Part of the Acoustical Imaging book series (ACIM, volume 29)

Abstract

Second harmonic components generated from plastic deformed metal rods are detected in real time by using a double-layered piezoelectric transducer (DLPT). The DLPT is comprised of two transducers with resonance frequencies of f 0; its resonance frequency is equal to f 0/2 when the transducers are connected in parallel and f 0 when the transducers are connected in series. The performance of the DLPT used in this ultrasonic system is evaluated. Samples of plastic deformed metal rods are prepared by tensile test equipment. The relative amplitude of the second harmonic component increased by approximately 25 dB in the metal rods after the tensile tests compared to before the tensile tests. A variation of second harmonic components generated by plastic deformed metal rods is distinctly measured by our system.

Key words

Double-layered piezoelectric transducer Second harmonic component Plastic deformed metal rod Tensile test Pulse echo 

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References

  1. 1.
    Cho-onpa Binran Henshuuiinkai eds.: Chouonpa-Binran (Ultrasonics) (Maruzen, Tokyo, 1999) pp. 216 [in Japanese].Google Scholar
  2. 2.
    K. Nakamura, K. Fukazawa, K. Yamada and S. Saito, Broadband ultrasonic transducers using a LiNbO3 plate with a ferroelectric inversion layer, IEEE Trans. Ultrason. Ferroelectr. & Freq. Control 50(11), 1558–1562 (2003).CrossRefGoogle Scholar
  3. 3.
    H. Adachi, K. Wakabayashi, M. Nishio, H. Mizuno and T. Kamakura, Improvement of spatial resolution for third harmonic detection using a separately arranged transmitting/ receiving ultrasonic transducer, Jpn. J. Appl. Phys. 42(1), 305–310 (2003).CrossRefADSGoogle Scholar
  4. 4.
    I. Akiyama, A. Ohya and S. Saito, Speckle noise reduction by superposing many higher harmonic images, Jpn. J. Appl. Phys. 44(6B), 4631–4636 (2005).CrossRefADSGoogle Scholar
  5. 5.
    M. Fukuda, M. Nishihira and K. Imano, Real Time extraction system using double-layered piezoelectric transducer for second-harmonic ultrasonic pulse waves, Jpn. J. Appl. Phys. 45(5B), 4556–4559 (2006).CrossRefADSGoogle Scholar
  6. 6.
    H. Yamada and M. Onoe, Double frequency ultrasonic search unit, Hihakai-Kensa 20(11), 605–608 (1971) [in Japanese].Google Scholar
  7. 7.
    M. Fukuda, M. Nishihira and K. Imano, Application of a Double-Layered Piezoelectric Transducer in the Generation of Short Ultrasonic Pulses, Jpn. J. Appl. Phys. 43(5B), 3131–3133 (2004).CrossRefADSGoogle Scholar
  8. 8.
    P. N. Burns, D. H. Simpson and M. A. Averkiou, NONLINEAR IMAGING, Ultrasound in Med. & Biol. 26(1), S19–S22 (2000).CrossRefGoogle Scholar
  9. 9.
    D. H. Simpson, C. T. Chin and P. N. Burns, Pulse Inversion Doppler: A New Method for Detecting Nonlinear Echoes from Microbubble Contrast Agents, IEEE Trans. Ultrason. Ferroelectr. & Freq. Control 46(2), 372–382 (1999).CrossRefGoogle Scholar
  10. 10.
    F. C. Simm, Phase Inversion Wideband Non-linear Imaging: Application to Tissue Harmonic Imaging, J. Med. Ultrason. 26(4), 285 (1999).Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • M. Fukuda
    • 1
  • M. Nishihira
    • 1
  • K. Imano
    • 1
  1. 1.Department of Electrical and Electronic Engineering Faculty of Engineering and Resouce ScienceAkita UniversityJapan

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