About: Non-linear time reversal ultrasonic pseudo-tomography

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://www.inderscience.com/offer.php?id=43216
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. (en)
Title	Non-linear time reversal ultrasonic pseudo-tomography Non-linear time reversal ultrasonic pseudo-tomography (en)
skos:prefLabel	Non-linear time reversal ultrasonic pseudo-tomography Non-linear time reversal ultrasonic pseudo-tomography (en)
skos:notation	RIV/61388998:_____/11:00363969!RIV12-AV0-61388998
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(FR-TI1/274), Z(AV0Z20760514)
http://linked.open...iv/cisloPeriodika	3/4
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Převorovský, Zdeněk Vejvodová, Šárka Krofta, Josef Převorovský, David
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav termomechaniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	216243
http://linked.open...ai/riv/idVysledku	RIV/61388998:_____/11:00363969
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	NDT; nonlinear elastic wave spectroscopy; time reversal mirrors; ultrasonic pseudo-tomography (en)
http://linked.open.../riv/klicoveSlovo	NDT time reversal mirrors ultrasonic pseudo-tomography nonlinear elastic wave spectroscopy
http://linked.open...odStatuVydavatele	CH - Švýcarská konfederace
http://linked.open...ontrolniKodProRIV	[53F850B03489]
http://linked.open...i/riv/nazevZdroje	International Journal of Microstructure and Materials Properties
http://linked.open...in/vavai/riv/obor	BI
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	*Evaluation of SHM methods and its integration into aircraft maintenance system
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	6
http://linked.open...iv/tvurceVysledku	Převorovský, Zdeněk Krofta, Josef Převorovský, David Vejvodová, Šárka
http://linked.open...n/vavai/riv/zamer	Complex dynamical systems in thermodynamics, fluid and solid mechanics
issn	1741-8410
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1504/IJMMP.2011.043216

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