About: Improved Signal to Noise Ratio of Electro-ultrasonic Spectroscopy

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The paper presents signal to noise consideration of a new NDT method. Tested sample is excited by electrical and ultrasonic signals with different frequencies. On the defect new harmonic signal is created with frequency given by subtraction of exciting frequencies fE and fU. High sensitivity of this method follows from the fact that the signal giving information on tested sample quality has frequency different from exciting signals. The signal to noise ratio and high sensitivity for NDT analyses is based on the application of special electrical filters. The theoretical sensitivity of this method and its limitation by parasitic effects is analyzed. Therefore the new variants of circuitry are designed and used for experimental verifying. First of all the equivalent dynamic range and final sensitivity is improved using linear filters to reduce the level of exciting signals in the amplifier input and by noise in exciting electrical signal reducing. The usability of this principle and possibility of minimi The paper presents signal to noise consideration of a new NDT method. Tested sample is excited by electrical and ultrasonic signals with different frequencies. On the defect new harmonic signal is created with frequency given by subtraction of exciting frequencies fE and fU. High sensitivity of this method follows from the fact that the signal giving information on tested sample quality has frequency different from exciting signals. The signal to noise ratio and high sensitivity for NDT analyses is based on the application of special electrical filters. The theoretical sensitivity of this method and its limitation by parasitic effects is analyzed. Therefore the new variants of circuitry are designed and used for experimental verifying. First of all the equivalent dynamic range and final sensitivity is improved using linear filters to reduce the level of exciting signals in the amplifier input and by noise in exciting electrical signal reducing. The usability of this principle and possibility of minimi (en)
Title	Improved Signal to Noise Ratio of Electro-ultrasonic Spectroscopy Improved Signal to Noise Ratio of Electro-ultrasonic Spectroscopy (en)
skos:prefLabel	Improved Signal to Noise Ratio of Electro-ultrasonic Spectroscopy Improved Signal to Noise Ratio of Electro-ultrasonic Spectroscopy (en)
skos:notation	RIV/00216305:26220/08:PU78576!RIV15-GA0-26220___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA102/06/0866), P(GA106/07/1393), P(GP102/07/P482), Z(MSM0021630503)
http://linked.open...iv/cisloPeriodika	6
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Tofel, Pavel Majzner, Jiří Šikula, Josef
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	Vysoké učení technické v Brně / Fakulta elektrotechniky a komunikačních technologií
http://linked.open...dnocenehoVysledku	371700
http://linked.open...ai/riv/idVysledku	RIV/00216305:26220/08:PU78576
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	electro-ultrasonic, noise, spectroscopy (en)
http://linked.open.../riv/klicoveSlovo	spectroscopy noise electro-ultrasonic
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[5C440D78B364]
http://linked.open...i/riv/nazevZdroje	ElectroScope - http://www.electroscope.zcu.cz
http://linked.open...in/vavai/riv/obor	JA
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Nonlinear ultrasonic spectroscopy of magnesium metallic composits and alloys Nonlinear electroultrasonic spectroscopy of solids Nonlinear electro-ultrasonic spectroscopy of thick film resistors
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	2008
http://linked.open...iv/tvurceVysledku	Hájek, Karel Majzner, Jiří Sedláková, Vlasta Tofel, Pavel Šikula, Josef
http://linked.open...n/vavai/riv/zamer	Nové trendy v mikroelektronických systémech a nanotechnologiích (MIKROSYN)
issn	1802-4564
number of pages	4 (xsd:int)
http://localhost/t...ganizacniJednotka	26220

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