About: Acoustic and electromagnetic emission sources characterization

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Cracks creation is accompanied by emission of phonons and by electric charge redistribution due to chemical bonds loosen. Sample dimensions and velocity of wave propagation determine vibration frequencies. Electric charges on crack walls create a dipole momentum and crack wall vibrations produce time dependent electric and magnetic fields. An electric signal is induced on metal electrodes and after its analysis is carried out information on the crack wall movement can be obtained. For crack lengths beloow 1 mm the respective electrical signal has a frequency of over 2 MHz. In this paper the frequency analysis was performed in frequency band up to 2 MHz. Cracks creation is accompanied by emission of phonons and by electric charge redistribution due to chemical bonds loosen. Sample dimensions and velocity of wave propagation determine vibration frequencies. Electric charges on crack walls create a dipole momentum and crack wall vibrations produce time dependent electric and magnetic fields. An electric signal is induced on metal electrodes and after its analysis is carried out information on the crack wall movement can be obtained. For crack lengths beloow 1 mm the respective electrical signal has a frequency of over 2 MHz. In this paper the frequency analysis was performed in frequency band up to 2 MHz. (en) Cracks creation is accompanied by emission of phonons and by electric charge redistribution due to chemical bonds loosen. Sample dimensions and velocity of wave propagation determine vibration frequencies. Electric charges on crack walls create a dipole momentum and crack wall vibrations produce time dependent electric and magnetic fields. An electric signal is induced on metal electrodes and after its analysis is carried out information on the crack wall movement can be obtained. For crack lengths beloow 1 mm the respective electrical signal has a frequency of over 2 MHz. In this paper the frequency analysis was performed in frequency band up to 2 MHz. (cs)
Title	Charakterizace zdrojů akustické a elektromagnetické emise (cs) Acoustic and electromagnetic emission sources characterization Acoustic and electromagnetic emission sources characterization (en)
skos:prefLabel	Charakterizace zdrojů akustické a elektromagnetické emise (cs) Acoustic and electromagnetic emission sources characterization Acoustic and electromagnetic emission sources characterization (en)
skos:notation	RIV/00216305:26220/03:PU39263!RIV06-GA0-26220___
http://linked.open.../vavai/riv/strany	151-156
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA103/01/1058), P(GA205/03/0071), Z(MSM 262200022)
http://linked.open...vai/riv/dodaniDat	2006
http://linked.open...aciTvurceVysledku	Pavelka, Jan Majzner, Jiří Koktavý, Pavel Šikula, Josef
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
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	597342
http://linked.open...ai/riv/idVysledku	RIV/00216305:26220/03:PU39263
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	acoustic, electromagnetic, emission, sources characterisation (en)
http://linked.open.../riv/klicoveSlovo	electromagnetic sources characterisation acoustic emission
http://linked.open...ontrolniKodProRIV	[33CF18DA02F8]
http://linked.open...v/mistoKonaniAkce	Brno
http://linked.open...i/riv/mistoVydani	Brno
http://linked.open...i/riv/nazevZdroje	Workshop NDT CMC 2003 - Non-Destructive Testing of Civil Materials and Constructions - Proceedings
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Non-linear ultrasonic defectoscopy of solids Electromagnetic and acoustic emission in solids
http://linked.open...UplatneniVysledku	2003
http://linked.open...iv/tvurceVysledku	Koktavý, Pavel Majzner, Jiří Pavelka, Jan Šikula, Josef
http://linked.open...vavai/riv/typAkce	CST - Celostátní
http://linked.open.../riv/zahajeniAkce	2003-12-03 (xsd:date)
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20262200022
number of pages	6 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Vysoké učení technické v Brně
https://schema.org/isbn	80-7204-318-8
http://localhost/t...ganizacniJednotka	26220

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