About: The New High Sensitive Variant of Nonlinear Ultrasound Spectroscopy for Nondestructive Testing

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://vavtest.unob.cz/registr
Description	The ultrasound excitation uses harmonic signals with relatively near or distant frequencies as using of mixing or modulation principle. This paper presents comparison of these two basic methods and it asks new possibilities for rising of sensitivity. Especially a necessary time for the exciting and sensing signals is compared. The second part discusses possibility of using of the burst-wave exciting mode for these methods. First, the excitation by phase coupled pulse signals is derived for obtaining of result long lime signal without waste of its useful energy. Nevertheless this output long time signal consists from time-separated pulses and therefore the analog prefiltration cannot be used for suppression of excitation signals. Therefore the new variant of mixing method is derived, where such exciting frequencies are used, that result signal with difference frequency has a relatively high frequency and a shorter period then the exciting signal. The ultrasound excitation uses harmonic signals with relatively near or distant frequencies as using of mixing or modulation principle. This paper presents comparison of these two basic methods and it asks new possibilities for rising of sensitivity. Especially a necessary time for the exciting and sensing signals is compared. The second part discusses possibility of using of the burst-wave exciting mode for these methods. First, the excitation by phase coupled pulse signals is derived for obtaining of result long lime signal without waste of its useful energy. Nevertheless this output long time signal consists from time-separated pulses and therefore the analog prefiltration cannot be used for suppression of excitation signals. Therefore the new variant of mixing method is derived, where such exciting frequencies are used, that result signal with difference frequency has a relatively high frequency and a shorter period then the exciting signal. (en)
Title	The New High Sensitive Variant of Nonlinear Ultrasound Spectroscopy for Nondestructive Testing The New High Sensitive Variant of Nonlinear Ultrasound Spectroscopy for Nondestructive Testing (en)
skos:prefLabel	The New High Sensitive Variant of Nonlinear Ultrasound Spectroscopy for Nondestructive Testing The New High Sensitive Variant of Nonlinear Ultrasound Spectroscopy for Nondestructive Testing (en)
skos:notation	RIV/60162694:G43__/10:00445805!RIV12-MO0-G43_____
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MO0FVT0000403)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Hájek, Karel
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	Ministerstvo obrany / Univerzita obrany - Fakulta vojenských technologií Brno
http://linked.open...dnocenehoVysledku	274686
http://linked.open...ai/riv/idVysledku	RIV/60162694:G43__/10:00445805
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	NDT; non-linear spectroscopy; modulation; ultrasound; cracks; pulse exciting (en)
http://linked.open.../riv/klicoveSlovo	cracks ultrasound NDT modulation non-linear spectroscopy pulse exciting
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[1039B7B523B3]
http://linked.open...i/riv/nazevZdroje	Advances in Military Technology
http://linked.open...in/vavai/riv/obor	KA
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	Vol..4
http://linked.open...iv/tvurceVysledku	Hájek, Karel Šikula, Josef
http://linked.open...n/vavai/riv/zamer	Development, integration, administration and security of communication and information systems (C4I2) in NATO environment
issn	1802-2308
number of pages	8 (xsd:int)
http://localhost/t...ganizacniJednotka	G43

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