Publication detail

Analysis of Electromagnetic and Acoustic Emission in Solid Dielectric Materials

KNÁPEK, A. MAJZNER, J. SEDLÁK, P.

Original Title

Analysis of Electromagnetic and Acoustic Emission in Solid Dielectric Materials

English Title

Analysis of Electromagnetic and Acoustic Emission in Solid Dielectric Materials

Type

conference proceedings

Language

en

Original Abstract

Acoustic Emission is one of the nondestructive techniques that experienced great progress during the last twenty years and still holding its significant position among other non-destructive evaluation techniques. It is used mainly to localize crack in solid materials, especially in non-metallic ones which are mechanically stressed. During the material deformation (when a crack is generated) the electric charges are appearing at the faces of the cracks. The electric dipole system then becomes a source of voltage induced on metal electrodes. The recorded electric signal consists of crack walls self vibration given by crack length and vibration due to an ultrasonic wave given by sample dimension. This entry describes the use of the acoustic emitted and electromagnetic emitted signals from used piezo-ceramic sensors in order to localize the position of the crack in the granite sample.

English abstract

Acoustic Emission is one of the nondestructive techniques that experienced great progress during the last twenty years and still holding its significant position among other non-destructive evaluation techniques. It is used mainly to localize crack in solid materials, especially in non-metallic ones which are mechanically stressed. During the material deformation (when a crack is generated) the electric charges are appearing at the faces of the cracks. The electric dipole system then becomes a source of voltage induced on metal electrodes. The recorded electric signal consists of crack walls self vibration given by crack length and vibration due to an ultrasonic wave given by sample dimension. This entry describes the use of the acoustic emitted and electromagnetic emitted signals from used piezo-ceramic sensors in order to localize the position of the crack in the granite sample.

Keywords

electromagnetic emission, acoustic emission, crack localization

Released

04.10.2009

Publisher

National and Kapodistrian University of Athens

Pages from

170

Pages to

170

BibTex


@proceedings{BUT65752,
  author="Alexandr {Knápek} and Jiří {Majzner} and Petr {Sedlák}",
  title="Analysis of Electromagnetic and Acoustic Emission in Solid Dielectric Materials",
  annote="Acoustic Emission is one of the nondestructive techniques that experienced great progress during the last twenty years and still holding its significant position among other non-destructive evaluation techniques. It is used mainly to localize crack in solid materials, especially in non-metallic ones which are mechanically stressed. During the material deformation (when a crack is generated) the electric charges are appearing at the faces of the cracks. The electric dipole system then becomes a source of voltage induced on metal electrodes. The recorded electric signal consists of crack walls self vibration given by crack length and vibration due to an ultrasonic wave given by sample dimension. This entry describes the use of the acoustic emitted and electromagnetic emitted signals from used piezo-ceramic sensors in order to localize the position of the crack in the granite sample.",
  address="National and Kapodistrian University of Athens",
  booktitle="Book of Abstracts, IMA 2009 Conference, Athens, October 2009.",
  chapter="65752",
  institution="National and Kapodistrian University of Athens",
  year="2009",
  month="october",
  pages="170--170",
  publisher="National and Kapodistrian University of Athens",
  type="conference proceedings"
}