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  5. Localization of inhomogeneities in an elastic plate using the time reversal method
 
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Localization of inhomogeneities in an elastic plate using the time reversal method

Publication date
2017
Document type
Research article
Author
Eremin, Artem
Glushkov, Evgeny
Glushkova, Natalia
Lammering, Rolf
Organisational unit
Mechanik 
DOI
10.1134/S1063771017050050
URI
https://openhsu.ub.hsu-hh.de/handle/10.24405/4160
Series or journal
Acoustical physics
Periodical volume
63
Periodical issue
5
First page
562
Last page
569
Peer-reviewed
✅
Part of the university bibliography
✅
  • Additional Information
Abstract
Theoretical and practical aspects of applying time reversal of elastic waves to localize a source of oscillations or a defect are considered in problems of active ultrasonic monitoring of thin-walled metal structures. Backward reradiation of a time-reversed signal is implemented using a computer model based on a semianalytical integral approach. The proposed algorithm is verified experimentally on aluminum samples excited by piezoelectric wafer active sensors. The results corroborate the possibility of reliably determining of the position and size of the load application region and a local inhomogeneity with a relatively small number of signal measurement points on the sample surface.
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