Localisation of continuous acoustic emission sources using time-reversal signal processing
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F25%3A00636942" target="_blank" >RIV/61388998:_____/25:00636942 - isvavai.cz</a>
Result on the web
<a href="https://www.ingentaconnect.com/content/bindt/insight/2025/00000067/00000003/art00003" target="_blank" >https://www.ingentaconnect.com/content/bindt/insight/2025/00000067/00000003/art00003</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1784/insi.2025.67.3.140" target="_blank" >10.1784/insi.2025.67.3.140</a>
Alternative languages
Result language
angličtina
Original language name
Localisation of continuous acoustic emission sources using time-reversal signal processing
Original language description
Reliable acoustic emission (AE) source localisation is one of the most important inverse problems in non-destructive testing (NDT) and structural health monitoring of engineering structures. Standard AE source localisation techniques often fail when applied to complicated structures that exhibit wave dispersion, velocity and/or geometry changes. The localisation of continuous AE signals, for example generated by leakage, is still a challenge compared to the localisation of short-burst signal sources. An effective tool to overcome these problems is time-reversal (TR) signal processing, which results in space-time wave focusing, partial source signal reconstruction and more precise source localisation. In this paper, the TR procedure is used to improve the signal-to-noise ratio (SNR) and the cross-correlation function (CCF) to locate continuous signal sources. The proposed TR-based AE source location procedure is verified using an artificial AE source, ie a piezoelectric transducer emitting a continuous noise signal, acting on an aluminium (Al) plate with circular holes. The signal simulating the leak was recorded at different positions on the plate, time-reversed and retransmitted back into the structure. For precise localisation, detailed surface scanning around the roughly estimated source position was necessary. The experimental results show new possibilities for TR signal processing in practical engineering applications.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Insight
ISSN
1354-2575
e-ISSN
1754-4904
Volume of the periodical
67
Issue of the periodical within the volume
3
Country of publishing house
GB - UNITED KINGDOM
Number of pages
4
Pages from-to
140-143
UT code for WoS article
001462379500002
EID of the result in the Scopus database
2-s2.0-105000221414