Integrated High-Temperature Longitudinal, Shear, and Plate Acoustic-Wave Transducers

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概要

• 論文の詳細を見る

• Thick (${>}40$ μm) piezoelectric ceramic films were deposited on metallic substrates by a spray technique to fabricate shear (S) wave probes, longitudinal and shear (L&S) wave probes, and plate acoustic-wave (PAW) transducers for nondestructive testing and characterization (NDT&C) at elevated temperatures. Integrated ultrasonic S-wave probes were fabricated onto a steel substrate with the use of a mode conversion method from L-waves to S-waves. Probes that can simultaneously generate and receive both L- and S-waves were also developed. They operated at up to 350 °C with a center frequency of 5–7 MHz, a 6 dB bandwidth of 4–6 MHz, and a signal-to-noise ratio (SNR) of more than 20 dB. In addition, the fabrication and ultrasonic performance of integrated PAW transducers directly fabricated onto stainless-steel (SS) plates for NDT&C applications have been performed. Theoretical calculations and experimental results indicate PAW propagation in the first antisymmetrical mode along the 0.702-mm-thick SS plate. The PAW signals observed with good SNR demonstrate the NDT&C capability of these integrated PAW transducers in a distance of 5–60 cm operated at 350 °C.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2007-07-30

著者

• Jen Cheng-kuei

  Industrial Materials Institute National Research Council Of Canada

• Kobayashi Makiko

  Industrial Materials Institute National Research Council Of Canada

• Wu Kuo-Ting

  Department of Electrical and Computer Engineering, McGill University, 3480 University Street, Montreal, QC, H3A 2K6, Canada

• Ono Yuu

  Industrial Materials Institute, National Research Council Canada, 75 de Mortagne Blvd., Boucherville, QC, J4B 6Y4, Canada

• Shih Ishiang

  Department of Electrical and Computer Engineering, McGill University, 3480 University Street, Montreal, QC, H3A 2K6, Canada

関連論文

• Inclusions Detection in Molten Metals by Focused Ultrasounds
• 溶湯中での高分解能超音波計測
• H-1 Integrated Ultrasonic Transducers Made by Sol-Gel Spray Technique(Measurement techniques, Imaging, Nondestructive testing, Acousto-optics)
• Detection of Inclusion in Molten Metal by Focused Ultrasonic Wave
• Integrated High-Temperature Longitudinal, Shear, and Plate Acoustic-Wave Transducers

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