Utilization of Electromagnetic Emission at Cracks Localization

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F05%3APU52095" target="_blank" >RIV/00216305:26220/05:PU52095 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

čeština

Original language name

VYUŽITÍ ELEKTROMAGNETICKÉ EMISE PŘI LOKALIZACI TRHLIN

Original language description

The cracks can be indicated by electromagnetic (EME) and acoustic (AE) emission when solid, especially non-metallic materials, are mechanically stressed. 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. The recorded electric signal is superposition of crack walls self vibration given by crack length and vibration due to an ultrasonic wave given by sample dimension. The ele ectromagnetic signal precedes the acoustic emission response and time delay corresponds to the difference of propagation velocities of sound and electromagnetic radiation in the sample. The paper describes the use of AE and EME signals to localize the position of the crack in granite sample.

Czech name

VYUŽITÍ ELEKTROMAGNETICKÉ EMISE PŘI LOKALIZACI TRHLIN

Czech description

The cracks can be indicated by electromagnetic (EME) and acoustic (AE) emission when solid, especially non-metallic materials, are mechanically stressed. 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. The recorded electric signal is superposition of crack walls self vibration given by crack length and vibration due to an ultrasonic wave given by sample dimension. The ele ectromagnetic signal precedes the acoustic emission response and time delay corresponds to the difference of propagation velocities of sound and electromagnetic radiation in the sample. The paper describes the use of AE and EME signals to localize the position of the crack in granite sample.

Type

D - Article in proceedings

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2005

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Defektoskopie 2005 - sborník příspěvků

ISBN

80-214-3053-2

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

207-212

Publisher name

Czech Society for Nondestructive Testing

Place of publication

Znojmo

Event location

Znojmo

Event date

Nov 8, 2005

Type of event by nationality

CST - Celostátní akce

UT code for WoS article

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