Acoustic and electromagnetic emission sources characterization

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F03%3APU39263" target="_blank" >RIV/00216305:26220/03:PU39263 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Acoustic and electromagnetic emission sources characterization
Original language 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 dipolemomentum 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.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2003
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Workshop NDT CMC 2003 - Non-Destructive Testing of Civil Materials and Constructions - Proceedings
ISBN
80-7204-318-8
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
151-156
Publisher name
Technical University of Brno
Place of publication
Brno
Event location
Brno
Event date
Dec 3, 2003
Type of event by nationality
CST - Celostátní akce
UT code for WoS article
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