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Statements

Subject Item
n2:RIV%2F61388998%3A_____%2F10%3A00351999%21RIV11-GA0-61388998
rdf:type
n16:Vysledek skos:Concept
dcterms:description
Classical ultrasonic tomography generally uses source signals of constant amplitude. Mostly linear characteristics like ultrasonic amplitude, attenuation or time of flight are used to structural defects imaging. On the other hand, more complex and nonlinear characteristics of elastic wave propagation provide more sensitive indicators of body changes and irregularities. Nonlinear Elastic Wave Spectroscopy (NEWS) techniques give us better information about damage with higher sensitivity and also the ability to detect defects smaller than the ultrasonic wavelength. Two NEWS methods are considered: Nonlinear Wave Modulation Spectroscopy (NWMS) and Nonlinear Time Reversal Mirrors (NLTRM) with ESAM and DORT signal processing. Testing results, obtained on metallic and concrete parts illustrate performance of both procedures. Classical ultrasonic tomography generally uses source signals of constant amplitude. Mostly linear characteristics like ultrasonic amplitude, attenuation or time of flight are used to structural defects imaging. On the other hand, more complex and nonlinear characteristics of elastic wave propagation provide more sensitive indicators of body changes and irregularities. Nonlinear Elastic Wave Spectroscopy (NEWS) techniques give us better information about damage with higher sensitivity and also the ability to detect defects smaller than the ultrasonic wavelength. Two NEWS methods are considered: Nonlinear Wave Modulation Spectroscopy (NWMS) and Nonlinear Time Reversal Mirrors (NLTRM) with ESAM and DORT signal processing. Testing results, obtained on metallic and concrete parts illustrate performance of both procedures.
dcterms:title
Nonlinear Wave Modulation and Time Reversal Tomography of Structural Defects Nonlinear Wave Modulation and Time Reversal Tomography of Structural Defects
skos:prefLabel
Nonlinear Wave Modulation and Time Reversal Tomography of Structural Defects Nonlinear Wave Modulation and Time Reversal Tomography of Structural Defects
skos:notation
RIV/61388998:_____/10:00351999!RIV11-GA0-61388998
n3:aktivita
n9:P n9:Z
n3:aktivity
P(FR-TI1/274), P(GA106/07/1393), Z(AV0Z20760514)
n3:dodaniDat
n14:2011
n3:domaciTvurceVysledku
n8:8402469 n8:1845349
n3:druhVysledku
n13:D
n3:duvernostUdaju
n19:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
275061
n3:idVysledku
RIV/61388998:_____/10:00351999
n3:jazykVysledku
n11:eng
n3:klicovaSlova
NDT; acoustic emission; ESAM; DORT
n3:klicoveSlovo
n4:DORT n4:NDT n4:ESAM n4:acoustic%20emission
n3:kontrolniKodProRIV
[63282D5C5874]
n3:mistoKonaniAkce
Lyon
n3:mistoVydani
Lyon
n3:nazevZdroje
CFA 10
n3:obor
n20:BI
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
3
n3:projekt
n15:GA106%2F07%2F1393 n15:FR-TI1%2F274
n3:rokUplatneniVysledku
n14:2010
n3:tvurceVysledku
Převorovský, Zdeněk Dos Santos, S. Vejvodová, Šárka
n3:typAkce
n7:WRD
n3:zahajeniAkce
2010-04-12+02:00
n3:zamer
n10:AV0Z20760514
s:numberOfPages
4
n21:hasPublisher
IntellAgence Technologies
n18:isbn
978-2-9521105-7-0