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Time reversal transfer: Exploring the robustness of time reversed acoustics in media with geometry perturbations
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SYSNO ASEP 0445938 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Time reversal transfer: Exploring the robustness of time reversed acoustics in media with geometry perturbations Author(s) Kober, Jan (UT-L) RID, ORCID
Dvořáková, Zuzana (UT-L)
Převorovský, Zdeněk (UT-L) RID
Krofta, Josef (UT-L) RIDNumber of authors 4 Source Title Journal of the Acoustical Society of America. - : Acoustical Society of America - ISSN 0001-4966
Roč. 138, č. 1 (2015), EL49-EL53Number of pages 5 s. Publication form Print - P Language eng - English Country US - United States Keywords acoustic waves ; boundary value problems ; elastic waves ; green's function methods ; acoustic scattering Subject RIV BI - Acoustics Institutional support UT-L - RVO:61388998 UT WOS 000358929000009 EID SCOPUS 84937029300 DOI 10.1121/1.4922623 Annotation 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. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2016 Electronic address http://scitation.aip.org/content/asa/journal/jasa/138/1/10.1121/1.4922623
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