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The effect of boundary conditions on resonant ultrasonic spherical chains

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Akanji, Omololu, Yang, J., Hutchins, David A., Thomas, P. J., Davis, L. A. J., Harput, S., Freear, S., Gelat, P. and Saffari, N. (2016) The effect of boundary conditions on resonant ultrasonic spherical chains. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 63 (11). pp. 1957-1966. doi:10.1109/TUFFC.2016.2576563 ISSN 0885-3010.

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Official URL: http://dx.doi.org/10.1109/TUFFC.2016.2576563

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Abstract

The response of a resonant chain of spheres to changes in holder material and pre-compression is studied at ultrasonic frequencies. The system is found to be very sensitive to these parameters, with the creation of impulsive waveforms from a narrow bandwidth input seen only for certain chain lengths and holder materials. In addition, careful experiments were performed using known amounts of pre-compression force, using a calibrated stylus arrangement. At negligible pre-compression levels, impulses were generated within the chain, which were then suppressed by increased pre-compression. This was accompanied by large changes in propagation velocity as the system gradually changes from being strongly nonlinear to being more linear. Simulations using a discrete model for the motion of each sphere agree well with experimental data.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH): Ultrasonics
Journal or Publication Title: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Publisher: Institute of Electrical and Electronics Engineers
ISSN: 0885-3010
Official Date: November 2016
Dates:
DateEvent
November 2016Published
7 June 2016Available
13 May 2016Accepted
Volume: 63
Number: 11
Page Range: pp. 1957-1966
DOI: 10.1109/TUFFC.2016.2576563
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 2 June 2016
Date of first compliant Open Access: 1 September 2016
Funder: Engineering and Physical Sciences Research Council (EPSRC)
Grant number: EP/K030159/1
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