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Dynamic characteristics of flexural ultrasonic transducers
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Feeney, Andrew, Kang, Lei, Rowlands, G. (George) and Dixon, Steve M. (2017) Dynamic characteristics of flexural ultrasonic transducers. In: 2017 ICU Honolulu. Sixth International Congress on Ultrasonics, Honolulu, Hawaii, 18-20 Dec 2017. Published in: Proceedings of Meetings on Acoustics, 32 (1). ISSN 1939-800X. doi:10.1121/2.0000684
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Official URL: http://dx.doi.org/10.1121/2.0000684
Abstract
The flexural ultrasonic transducer is a robust and inexpensive device which can be used as either a transmitter or receiver of ultrasound, commonly used as proximity sensors or in industrial metrology systems. Their simple construction comprises a piezoelectric disc bonded to a metal cap, which is a membrane that can be considered as a constrained plate. Flexural transducers tend to be driven with a short voltage burst of several cycles at a nominal resonant frequency, in one of two vibration modes. The physics of their vibration response has not been thoroughly reported, and yet an understanding of their operation is essential to optimise application. The vibration behaviour of a flexural transducer can be discretised into three principal zones, comprising a build-up to steady-state, steady-state, and a natural decay, or ring-down. This discretisation can be used to develop mathematical interpretations of the flexural transducer response. Through a combination of experimental methods including laser Doppler vibrometry, and the development of a mechanical analog model, the response mechanisms of flexural transducers are investigated.
| Item Type: | Conference Item (Paper) | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
| Library of Congress Subject Headings (LCSH): | Ultrasonic transducers, Metrology -- Industrial applications, Ultrasonic transducers -- Vibration, Discretization (Mathematics) | ||||||
| Journal or Publication Title: | Proceedings of Meetings on Acoustics | ||||||
| Publisher: | ASA | ||||||
| ISSN: | 1939-800X | ||||||
| Official Date: | 1 March 2017 | ||||||
| Dates: |
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| Volume: | 32 | ||||||
| Number: | 1 | ||||||
| Article Number: | 045002 | ||||||
| DOI: | 10.1121/2.0000684 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access | ||||||
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| Conference Paper Type: | Paper | ||||||
| Title of Event: | 2017 ICU Honolulu. Sixth International Congress on Ultrasonics | ||||||
| Type of Event: | Conference | ||||||
| Location of Event: | Honolulu, Hawaii | ||||||
| Date(s) of Event: | 18-20 Dec 2017 |
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