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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
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Official URL: http://dx.doi.org/10.1103/PhysRevE.93.063002
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 | ||||||
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||
| Divisions: | Faculty of Science > 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: |
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| 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 | ||||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC) | ||||||
| Grant number: | EP/K030159/1 (EPSRC) |
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