A comparison of two configurations for a dual-resonance cymbal transducer

Feeney, A. and Lucas, M. (2018) A comparison of two configurations for a dual-resonance cymbal transducer. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 65(3), pp. 489-496. (doi: 10.1109/TUFFC.2018.2793310)

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The ability to design tuned ultrasonic devices that can be operated in the same mode at two different frequencies has the potential to benefit a range of applications, such as surgical cutting procedures where the penetration through soft then hard tissues could be enhanced by switching the operating frequency. The cymbal transducer has recently been adapted to form a prototype ultrasonic surgical cutting device that operates at a single frequency. In this paper, two different methods of configuring a dual-resonance cymbal transducer are detailed. The first approach relies on transducer fabrication using different metals for the two end-caps, thereby forming a dual-resonance transducer. The second employs transducer end-caps composed from a shape memory alloy, superelastic Nitinol. The resonance frequency of the Nitinol transducer depends on the phase microstructure of the material, switchable through the temperature and/or stress dependency of the Nitinol end-caps. The vibration response of each transducer is measured through electrical impedance measurements and laser Doppler vibrometry, and finite element analysis is used to show the sensitivity of transducer modal response to the fabrication processes. Through this research, two viable dual-resonance cymbal transducers are designed and characterised, and compared to illustrate the advantages and disadvantages of the two different approaches.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Feeney, Dr Andrew and Lucas, Professor Margaret
Authors: Feeney, A., and Lucas, M.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
ISSN (Online):1525-8955
Published Online:16 January 2018
Copyright Holders:Copyright © 2017 IEEE
First Published:First published in IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 65(3): 489-496
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
554791EPSRC Doctoral Training Grant 2010-14Mary Beth KneafseyEngineering and Physical Sciences Research Council (EPSRC)EP/P505534/1VPO VICE PRINCIPAL RESEARCH & ENTERPRISE