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Statements

Subject Item
n2:RIV%2F61388998%3A_____%2F11%3A00363969%21RIV12-AV0-61388998
rdf:type
skos:Concept n10:Vysledek
rdfs:seeAlso
http://www.inderscience.com/offer.php?id=43216
dcterms:description
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-received signals 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. 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-received signals 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.
dcterms:title
Non-linear time reversal ultrasonic pseudo-tomography Non-linear time reversal ultrasonic pseudo-tomography
skos:prefLabel
Non-linear time reversal ultrasonic pseudo-tomography Non-linear time reversal ultrasonic pseudo-tomography
skos:notation
RIV/61388998:_____/11:00363969!RIV12-AV0-61388998
n10:predkladatel
n11:ico%3A61388998
n3:aktivita
n20:P n20:Z
n3:aktivity
P(FR-TI1/274), Z(AV0Z20760514)
n3:cisloPeriodika
3/4
n3:dodaniDat
n13:2012
n3:domaciTvurceVysledku
n4:7873255 n4:1845349 n4:2650290 n4:8402469
n3:druhVysledku
n17:J
n3:duvernostUdaju
n8:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
216243
n3:idVysledku
RIV/61388998:_____/11:00363969
n3:jazykVysledku
n16:eng
n3:klicovaSlova
NDT; nonlinear elastic wave spectroscopy; time reversal mirrors; ultrasonic pseudo-tomography
n3:klicoveSlovo
n12:time%20reversal%20mirrors n12:nonlinear%20elastic%20wave%20spectroscopy n12:ultrasonic%20pseudo-tomography n12:NDT
n3:kodStatuVydavatele
CH - Švýcarská konfederace
n3:kontrolniKodProRIV
[53F850B03489]
n3:nazevZdroje
International Journal of Microstructure and Materials Properties
n3:obor
n18:BI
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
4
n3:projekt
n21:FR-TI1%2F274
n3:rokUplatneniVysledku
n13:2011
n3:svazekPeriodika
6
n3:tvurceVysledku
Převorovský, David Převorovský, Zdeněk Vejvodová, Šárka Krofta, Josef
n3:zamer
n19:AV0Z20760514
s:issn
1741-8410
s:numberOfPages
7
n6:doi
10.1504/IJMMP.2011.043216