HiFFUTs for High Temperature Ultrasound

Feeney, A. , Kang, L. and Dixon, S. (2017) HiFFUTs for High Temperature Ultrasound. In: 2017 International Congress on Ultrasonics, Honolulu, HI, USA, 18-20 Dec 2017, 045003. (doi: 10.1121/2.0000685)

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Flexural ultrasonic transducers have been widely used as proximity sensors and as part of industrial metrology systems. However, there is demand from industry for these transducers to have the capability to operate in both liquid and gas, at temperatures of 100-200°C and higher, significantly greater than those tolerated by current flexural transducers. Furthermore, flexural transducers tend to be designed for operation up to around 50 kHz, and the ability to operate at higher frequencies will open up new application and research areas. A limitation of current flexural transducers is the electromechanical driving element, usually a lead zirconate titanate piezoelectric ceramic, which experiences significantly reduced performance as temperature is increased. This investigation proposes a new type of flexural transducer, the HiFFUT, a high frequency flexural ultrasonic transducer, comprising a bismuth titanate ceramic for operation at high temperatures, that could be replaced by another suitable high Curie temperature piezoelectric material if required, bonded to the membrane with a high temperature adhesive. The dynamic characteristics of the HiFFUT are studied as a function of temperature, providing insights into its usefulness for industrial applications.

Item Type:Conference Proceedings
Additional Information:This research is funded by EPSRC grant EP/N025393/1.
Glasgow Author(s) Enlighten ID:Feeney, Dr Andrew
Authors: Feeney, A., Kang, L., and Dixon, S.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Published Online:09 March 2018
Copyright Holders:Copyright © 2018 Acoustical Society of America
First Published:First published in Proceedings of Meetings on Acoustics 32(1): 045003
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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