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Analysis of solitary wave impulses in granular chains using ultrasonic excitation

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Yang, Jia, Hutchins, David A., Akanji, Omololu, Thomas, P. J., Davis, Lee A. J., Harput, Sevan, Gelat, Pierre, Freear, Steven and Saffari, Nader‏ (2016) Analysis of solitary wave impulses in granular chains using ultrasonic excitation. Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), 93 (6). pp. 1-13. 063002. doi:10.1103/PhysRevE.93.063002 ISSN 1539-3755.

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Official URL: http://dx.doi.org/10.1103/PhysRevE.93.063002

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Abstract

The propagation of broad bandwidth solitary wave impulses, generated within granular chains by narrow bandwidth ultrasonic excitation, is studied in detail. Theoretical predictions are compared to experimental results. It is demonstrated that the observed effects result from a sum of a solitary wave travelling out from the source with a wave that reflects from the far end of the chain. It is shown that this combination, when used with an excitation in the form of a long-duration tone-burst, encourages the generation of multiple impulses with a characteristic periodicity. This study shows that the properties of the chain structure and the excitation can be adjusted so as to generate ultrasonic solitary wave impulses with a high amplitude and known frequency content, which are of interest in applications such as biomedical ultrasound.

Item Type: Journal Article
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH): Ultrasonic waves
Journal or Publication Title: Physical Review E (Statistical, Nonlinear, and Soft Matter Physics)
Publisher: American Physical Society
ISSN: 1539-3755
Official Date: 10 June 2016
Dates:
DateEvent
10 June 2016Published
21 April 2016Accepted
Volume: 93
Number: 6
Number of Pages: 13
Page Range: pp. 1-13
Article Number: 063002
DOI: 10.1103/PhysRevE.93.063002
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 26 April 2016
Date of first compliant Open Access: 23 June 2016
Funder: Engineering and Physical Sciences Research Council (EPSRC)
Grant number: EP/K030159/1 (EPSRC)

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