The Library
Wideband electromagnetic dynamic acoustic transducer as a standard acoustic source for air-coupled ultrasonic sensors
Tools
Tools
Tools
Kang, Lei, Feeney, Andrew, Somerset, William and Dixon, Steve M. (2019) Wideband electromagnetic dynamic acoustic transducer as a standard acoustic source for air-coupled ultrasonic sensors. In: 2019 IEEE International Ultrasonics Symposium (IUS), Glasgow, 6-9 Oct 2019. Published in: 2019 IEEE International Ultrasonics Symposium (IUS) ISBN 9781728145969. doi:10.1109/ULTSYM.2019.8926271 ISSN 1948-5727.
|
PDF
WRAP-wideband-electromagnetic-dynamic-sensors-Dixon-2019.pdf - Accepted Version - Requires a PDF viewer. Download (1125Kb) | Preview |
Official URL: http://dx.doi.org/10.1109/ULTSYM.2019.8926271
Abstract
To experimentally study the characteristics of ultrasonic sensors, a wideband air-coupled ultrasonic transducer, wideband electromagnetic dynamic acoustic transducer (WEMDAT), is designed and fabricated. Characterisation methods, including electrical impedance analysis, laser Doppler vibrometry and pressure-field microphone measurement, are used to examine the performance of the WEMDAT, which have shown that the transducer has a wide bandwidth ranging approximately from 47 kHz to 145 kHz and a good directivity with a beam angle of around 20˚ with no evident side lobes. A 40 kHz commercial flexural ultrasonic transducer (FUT) is then taken as an example to receive ultrasonic waves in a pitch-catch configuration to evaluate the performance of the WEMDAT as an acoustic source. Experiment results have demonstrated that the WEMDAT can maintain the most of the frequency content of a 5 cycle 40 kHz tone burst electric signal and convert it into an ultrasonic wave for studying the dynamic characteristic and the directivity pattern of the ultrasonic receiver. A comparison of the dynamic characteristics between the transmitting and the receiving processes of the same FUT reveals that the FUT has a wider bandwidth when operating as an ultrasonic receiver than operating as a transmitter, which indicates that it is necessary to quantitatively investigate the receiving process of an ultrasonic transducer, demonstrating a huge potential of the WEMDAT serving as a standard acoustic source for ultrasonic sensors for various air-coupled ultrasonic applications.
| Item Type: | Conference Item (Paper) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics 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, Acoustic localization | |||||||||
| Journal or Publication Title: | 2019 IEEE International Ultrasonics Symposium (IUS) | |||||||||
| Publisher: | IEEE | |||||||||
| ISBN: | 9781728145969 | |||||||||
| ISSN: | 1948-5727 | |||||||||
| Official Date: | 9 December 2019 | |||||||||
| Dates: |
|
|||||||||
| DOI: | 10.1109/ULTSYM.2019.8926271 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Reuse Statement (publisher, data, author rights): | © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | |||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||
| Date of first compliant deposit: | 17 December 2019 | |||||||||
| Date of first compliant Open Access: | 17 December 2019 | |||||||||
| RIOXX Funder/Project Grant: |
|
|||||||||
| Conference Paper Type: | Paper | |||||||||
| Title of Event: | 2019 IEEE International Ultrasonics Symposium (IUS) | |||||||||
| Type of Event: | Conference | |||||||||
| Location of Event: | Glasgow | |||||||||
| Date(s) of Event: | 6-9 Oct 2019 |
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
Downloads
Downloads per month over past year
