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Nonlinearity in the dynamic response of flexural ultrasonic transducers
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Feeney, Andrew, Kang, Lei and Dixon, Steve M. (2017) Nonlinearity in the dynamic response of flexural ultrasonic transducers. IEEE Sensors Letters, 2 (1). pp. 1-4. doi:10.1109/LSENS.2017.2779183 ISSN 1530-437X.
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Official URL: http://dx.doi.org/10.1109/LSENS.2017.2779183
Abstract
Recent studies of the electro-mechanical behavior of flexural ultrasonic transducers have shown that their response can be considered as three distinct characteristic regions, the first building towards a steady state, followed by oscillation at the driving frequency in the steady state, before an exponential decay from the steady state at the transducer's dominant resonance frequency, once the driving force is removed. Despite the widespread industrial use of these transducers as ultrasonic proximity sensors, there is little published information on their vibration characteristics under different operating conditions. Flexual transducers are composed of a piezoelectric ceramic disc bonded to the inner surface of a metallic cap, the membrane of which bends in response to the high-frequency ceramic vibrations of the ceramic. Piezoelectric devices can be subject to nonlinear behavior, but there is no reported detail of the nonlinearity in flexural transducers. Experimental investigation through laser Doppler vibrometry shows strong nonlinearity in the vibration response, where resonance frequency reduces with increasing vibration amplitude.
| Item Type: | Journal Article | ||||||
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| 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, Ultrasonics | ||||||
| Journal or Publication Title: | IEEE Sensors Letters | ||||||
| Publisher: | IEEE | ||||||
| ISSN: | 1530-437X | ||||||
| Official Date: | 18 December 2017 | ||||||
| Dates: |
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| Volume: | 2 | ||||||
| Number: | 1 | ||||||
| Page Range: | pp. 1-4 | ||||||
| DOI: | 10.1109/LSENS.2017.2779183 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||
| Date of first compliant deposit: | 22 January 2018 | ||||||
| Date of first compliant Open Access: | 22 January 2018 | ||||||
| RIOXX Funder/Project Grant: |
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