The dynamic performance of flexural ultrasonic transducers

Feeney, A. , Kang, L., Rowlands, G. and Dixon, S. (2018) The dynamic performance of flexural ultrasonic transducers. Sensors, 18(1), 270. (doi: 10.3390/s18010270)

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Flexural ultrasonic transducers are principally used as proximity sensors and for industrial metrology. Their operation relies on a piezoelectric ceramic to generate a flexing of a metallic membrane, which delivers the ultrasound signal. The performance of flexural ultrasonic transducers has been largely limited to excitation through a short voltage burst signal at a designated mechanical resonance frequency. However, a steady-state amplitude response is not generated instantaneously in a flexural ultrasonic transducer from a drive excitation signal, and differences in the drive characteristics between transmitting and receiving transducers can affect the measured response. This research investigates the dynamic performance of flexural ultrasonic transducers using acoustic microphone measurements and laser Doppler vibrometry, supported by a detailed mechanical analog model, in a process which has not before been applied to the flexural ultrasonic transducer. These techniques are employed to gain insights into the physics of their vibration behaviour, vital for the optimisation of industrial ultrasound systems.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Feeney, Dr Andrew
Authors: Feeney, A., Kang, L., Rowlands, G., and Dixon, S.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Sensors
ISSN (Online):1424-8220
Copyright Holders:Copyright © 2018 by the authors
First Published:First published in Sensors 18(1):270
Publisher Policy:Reproduced under a Creative Commons Licence

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