About: A Model for an Electromagnetic Emission Signal Generated by Crack Creation

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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	When a stress is applied to the solids (rocks or tiles) cracks creation can be detected by signals of an acoustic and electromagnetic emission. The experimental study has been performed on rock samples. Two metallic layers have covered the tested devices to create metal-insulator-metal structure. During the process of the crack generation the electric charges appeared at the faces of the cracks. The electric dipole system is a source of voltage induced on metal electrodes. Using Shockley-Ramo theorem, tthe differential equation for induced voltage is derived. We found that voltage on measuring capacitor is directly proportional to the dipole width and its active area. The recorded electric signal is superposition of crack walls %22self%22 vibration given by crack length and vibration due to an ultrasonic wave given by sample dimensions. The electromagnetic signal precedes the acoustic emission response and time delay corresponds to the difference of propagation velocities of sound and electromagnetic radi When a stress is applied to the solids (rocks or tiles) cracks creation can be detected by signals of an acoustic and electromagnetic emission. The experimental study has been performed on rock samples. Two metallic layers have covered the tested devices to create metal-insulator-metal structure. During the process of the crack generation the electric charges appeared at the faces of the cracks. The electric dipole system is a source of voltage induced on metal electrodes. Using Shockley-Ramo theorem, tthe differential equation for induced voltage is derived. We found that voltage on measuring capacitor is directly proportional to the dipole width and its active area. The recorded electric signal is superposition of crack walls %22self%22 vibration given by crack length and vibration due to an ultrasonic wave given by sample dimensions. The electromagnetic signal precedes the acoustic emission response and time delay corresponds to the difference of propagation velocities of sound and electromagnetic radi (en)
Title	A Model for an Electromagnetic Emission Signal Generated by Crack Creation A Model for an Electromagnetic Emission Signal Generated by Crack Creation (en)
skos:prefLabel	A Model for an Electromagnetic Emission Signal Generated by Crack Creation A Model for an Electromagnetic Emission Signal Generated by Crack Creation (en)
skos:notation	RIV/00216305:26220/01:PU23921!RIV/2002/GA0/262202/N
http://linked.open.../vavai/riv/strany	283-290
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA102/99/1088), Z(MSM 261100007)
http://linked.open...vai/riv/dodaniDat	2002
http://linked.open...aciTvurceVysledku	Koktavý, Pavel Šikula, Josef Koktavý, Bohumil
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	672174
http://linked.open...ai/riv/idVysledku	RIV/00216305:26220/01:PU23921
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	MIM system, Crack, Electromagnetic emission, Acoustic emission (en)
http://linked.open.../riv/klicoveSlovo	Electromagnetic emission Acoustic emission MIM system Crack
http://linked.open...ontrolniKodProRIV	[10D52B64EA20]
http://linked.open...v/mistoKonaniAkce	Třešť
http://linked.open...i/riv/mistoVydani	Praha
http://linked.open...i/riv/nazevZdroje	Proceedings of NDT in Progress
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Noise spectroscopy and diagnostics of insulating systems with high temperature-proof materials
http://linked.open...UplatneniVysledku	2001
http://linked.open...iv/tvurceVysledku	Koktavý, Pavel Šikula, Josef Koktavý, Bohumil
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2001-06-20 (xsd:date)
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20261100007
number of pages	8 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Czech Society for Non-Destructive Testing, German Society for Non-Destructive Testing
https://schema.org/isbn	80-238-7263-X
http://localhost/t...ganizacniJednotka	26220

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