Non-linear time reversal ultrasonic pseudo-tomography
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F11%3A00363969" target="_blank" >RIV/61388998:_____/11:00363969 - isvavai.cz</a>
Výsledek na webu
<a href="http://www.inderscience.com/offer.php?id=43216" target="_blank" >http://www.inderscience.com/offer.php?id=43216</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1504/IJMMP.2011.043216" target="_blank" >10.1504/IJMMP.2011.043216</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Non-linear time reversal ultrasonic pseudo-tomography
Popis výsledku v původním jazyce
Nonlinear Elastic Wave Spectroscopy (NEWS) became an effective methodology for NDT of complex structures, providing high sensitivity of damage detection. One of the most promising NEWS procedures is based on Nonlinear Time Reversal Mirrors (NLTRM). General NLTRM procedure is mostly global, which brings difficulties with defect localization. In this paper, a procedure modification is proposed, based on similar arrangement as ultrasonic tomography. Array of transducers is spaced on a structure with defect. Individual piezoelectric transducers subsequently transmit direct signals, which are detected by receivers, then time-reversed and sent back. High-voltage relay multiplexer is used to switch between transmitters and receivers. Matrices of back-receivedsignals and their spectra are analyzed, and their nonlinear features are extracted along all wave-paths. Procedure application is illustrated by NDT of aircraft parts where NLTRM pseudo-tomography is used to allocate defective zones.
Název v anglickém jazyce
Non-linear time reversal ultrasonic pseudo-tomography
Popis výsledku anglicky
Nonlinear Elastic Wave Spectroscopy (NEWS) became an effective methodology for NDT of complex structures, providing high sensitivity of damage detection. One of the most promising NEWS procedures is based on Nonlinear Time Reversal Mirrors (NLTRM). General NLTRM procedure is mostly global, which brings difficulties with defect localization. In this paper, a procedure modification is proposed, based on similar arrangement as ultrasonic tomography. Array of transducers is spaced on a structure with defect. Individual piezoelectric transducers subsequently transmit direct signals, which are detected by receivers, then time-reversed and sent back. High-voltage relay multiplexer is used to switch between transmitters and receivers. Matrices of back-receivedsignals and their spectra are analyzed, and their nonlinear features are extracted along all wave-paths. Procedure application is illustrated by NDT of aircraft parts where NLTRM pseudo-tomography is used to allocate defective zones.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
BI - Akustika a kmity
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/FR-TI1%2F274" target="_blank" >FR-TI1/274: *Zhodnocení SHM metod a jejich integrace do údržbového systému letadla</a><br>
Návaznosti
Z - Vyzkumny zamer (s odkazem do CEZ)
Ostatní
Rok uplatnění
2011
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
International Journal of Microstructure and Materials Properties
ISSN
1741-8410
e-ISSN
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Svazek periodika
6
Číslo periodika v rámci svazku
3
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
7
Strana od-do
206-213
Kód UT WoS článku
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EID výsledku v databázi Scopus
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