1–3 Piezocomposite Design Optimised for High Frequency Kerfless Transducer Arrays

Demore, C.E.M., Cochran, S. , Garcia-Gancedo, L., Dauchy, F., Button, T.W. and Bamber, J.C. (2009) 1–3 Piezocomposite Design Optimised for High Frequency Kerfless Transducer Arrays. In: 2009 IEEE International Ultrasonics Symposium (IUS), Rome, Italy, 20-23 Sep 2009, ISBN 9781424443895 (doi: 10.1109/ULTSYM.2009.5442007)

Abstract

Piezocomposites that can operate at frequencies above 30 MHz without spurious modes are required in order to develop sufficiently sensitive high frequency arrays for high resolution imaging. However, scaling down of conventional piezocomposite fabrication techniques becomes increasingly difficult as dimensions decrease with increasing frequency. The approach presented here is to use micro-moulded 1-3 piezocomposites and a distribution of piezoelectric segment size and separation. Innovative approaches to composite pattern design, based on a randomized spatial distribution, are presented. Micro-moulding techniques are shown to be suitable for fabricating composites with dimensions required for high frequency composites. Randomized piezocomposite patterns are modeled and are shown to suppress spurious modes.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Cochran, Professor Sandy and Demore, Dr Christine
• Authors: Demore, C.E.M., Cochran, S., Garcia-Gancedo, L., Dauchy, F., Button, T.W., and Bamber, J.C.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• ISSN: 1051-0117
• ISBN: 9781424443895