Symmetry analysis signal processing for local nonlinear scatterers signature of complex materials structural integrity

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Symmetry analysis signal processing for local nonlinear scatterers signature of complex materials structural integrity

Popis výsledku v původním jazyce

Nonlinear elastic wave propagation effects help us to detect an early damage in degradation process leading to mechanical fracture. The NDT community refers methods based on nonlinear effects analysis as Nonlinear Elastic Wave Spectroscopy (NEWS). Considerable development (both in numerical- and experimental aspects) is done in Time Reversal (TR)-based NEWS methods using TR invariance and reciprocity. TR-NEWS methods were integrated into applications for improving identification of nonlinear scatterers,such as bubbles, landmines, and cracks, and these techniques are now widely recognized as extremely reliable. The complexity of the experimental set-up has been analyzed with a recent signal processing analysis using symmetry analysis combined with localization methods using the Decomposition of the Time Reversal Operator (DORT), with the objective to detect and spatially localize nonlinear scatterers responsible for the damage properties in complex materials.

Název v anglickém jazyce

Symmetry analysis signal processing for local nonlinear scatterers signature of complex materials structural integrity

Popis výsledku anglicky

Nonlinear elastic wave propagation effects help us to detect an early damage in degradation process leading to mechanical fracture. The NDT community refers methods based on nonlinear effects analysis as Nonlinear Elastic Wave Spectroscopy (NEWS). Considerable development (both in numerical- and experimental aspects) is done in Time Reversal (TR)-based NEWS methods using TR invariance and reciprocity. TR-NEWS methods were integrated into applications for improving identification of nonlinear scatterers,such as bubbles, landmines, and cracks, and these techniques are now widely recognized as extremely reliable. The complexity of the experimental set-up has been analyzed with a recent signal processing analysis using symmetry analysis combined with localization methods using the Decomposition of the Time Reversal Operator (DORT), with the objective to detect and spatially localize nonlinear scatterers responsible for the damage properties in complex materials.

Druh

D - Stať ve sborníku

CEP obor

BI - Akustika a kmity

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

10th Europen Conference on Non-Destructive Testing

ISBN

978-5-904270-27-8

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

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Název nakladatele

Moscow, Publishing house "SPEKTR"2010

Místo vydání

Moscow

Místo konání akce

Moskva

Datum konání akce

7. 6. 2010

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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