Time reversal transfer: Exploring the robustness of time reversed acoustics in media with geometry perturbations

0445938 - ÚT 2016 RIV US eng J - Journal Article
Kober, Jan - Dvořáková, Zuzana - Převorovský, Zdeněk - Krofta, Josef
Time reversal transfer: Exploring the robustness of time reversed acoustics in media with geometry perturbations.
Journal of the Acoustical Society of America. Roč. 138, č. 1 (2015), EL49-EL53. ISSN 0001-4966. E-ISSN 1520-8524
Institutional support: RVO:61388998
Keywords : acoustic waves * boundary value problems * elastic waves * green's function methods * acoustic scattering
Subject RIV: BI - Acoustics
Impact factor: 1.572, year: 2015
http://scitation.aip.org/content/asa/journal/jasa/138/1/10.1121/1.4922623

In this letter, fundamentals of transferring a time reversal experiment between similar objects are discussed. The time reversal experiment consists of two steps: forward propagation, when a source excites the medium and a complex wave field is created, and back propagation, resulting in time reversal focusing. Here the procedure of performing the first step on one specimen and the second step on another is investigated. The theory of time reversal transfer is explained on an example of object shape variations. However, conclusions of the theoretical analysis are applicable universally. The feasibility of the proposed procedure is validated in experiments modeling conditions in practice.
Permanent Link: http://hdl.handle.net/11104/0248678