About: Signal-to-Noise Ratio Enhancement Based on Wavelet Filtering in Ultrasonic Testing

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In ultrasonic non-destructive testing of materials with a coarse-grained structure the scattering from the grains causes backscattering noise, which masks flaw echoes in the measured signal. Several filtering methods have been proposed for improving the signal-to-noise ratio. In this paper we present a comparative study of methods based on the wavelet transform. Experiments with stationary, discrete and wavelet packet de-noising are evaluated by means of signal-to-noise ratio enhancement. Measured and simulated ultrasonic signals are used to verify the proposed de-noising methods. For comparison, we use signal-to-noise ratio enhancement related to fault echo amplitudes and filtering efficiency specific for ultrasonic signals. The best results in our setup were achieved with the wavelet packet de-noising method. In ultrasonic non-destructive testing of materials with a coarse-grained structure the scattering from the grains causes backscattering noise, which masks flaw echoes in the measured signal. Several filtering methods have been proposed for improving the signal-to-noise ratio. In this paper we present a comparative study of methods based on the wavelet transform. Experiments with stationary, discrete and wavelet packet de-noising are evaluated by means of signal-to-noise ratio enhancement. Measured and simulated ultrasonic signals are used to verify the proposed de-noising methods. For comparison, we use signal-to-noise ratio enhancement related to fault echo amplitudes and filtering efficiency specific for ultrasonic signals. The best results in our setup were achieved with the wavelet packet de-noising method. (en)
Title	Signal-to-Noise Ratio Enhancement Based on Wavelet Filtering in Ultrasonic Testing Signal-to-Noise Ratio Enhancement Based on Wavelet Filtering in Ultrasonic Testing (en)
skos:prefLabel	Signal-to-Noise Ratio Enhancement Based on Wavelet Filtering in Ultrasonic Testing Signal-to-Noise Ratio Enhancement Based on Wavelet Filtering in Ultrasonic Testing (en)
skos:notation	RIV/68407700:21230/09:00156864!RIV10-MSM-21230___
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM6840770015)
http://linked.open...iv/cisloPeriodika	8
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Šmíd, Radislav Kreidl, Marcel Štarman, Stanislav
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	České vysoké učení technické v Praze / Fakulta elektrotechnická
http://linked.open...dnocenehoVysledku	341133
http://linked.open...ai/riv/idVysledku	RIV/68407700:21230/09:00156864
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	ultrasonics; non-destructive testing; signal processing (en)
http://linked.open.../riv/klicoveSlovo	non-destructive testing signal processing ultrasonics
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[0EFB00225466]
http://linked.open...i/riv/nazevZdroje	Ultrasonics
http://linked.open...in/vavai/riv/obor	JB
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	49
http://linked.open...iv/tvurceVysledku	Šmíd, Radislav Kreidl, Marcel Štarman, Stanislav
http://linked.open...ain/vavai/riv/wos	000271518200020
http://linked.open...n/vavai/riv/zamer	Research of Methods and Systems for Measurement of Physical Quantities and Measured Data Processing.
issn	0041-624X
number of pages	8 (xsd:int)
http://localhost/t...ganizacniJednotka	21230

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