Detail publikačního výsledku

Partial Discharges and Acoustic Emission In Insulating Materials

KOKTAVÝ, P., KOKTAVÝ, B., ŠIKULA, J.

Originální název

Partial Discharges and Acoustic Emission In Insulating Materials

Anglický název

Partial Discharges and Acoustic Emission In Insulating Materials

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Partial discharges occur when voltage applied to insulating sheets reaches a critical value which is characteristic for given insulator. The partial discharges are accompanied by acoustic emission events. The acoustic emission signal is measured by a piezoceramic sensor and partial discharges are detected by means of voltage pulses on a load resistance. While a spike of a partial discharge appears immediately, an acoustic event signal is delayed. The time interval depends on the distance of the place where partial discharge is created and the wave velocity propagation of an acoustic emission signal. The position of PD source can be estimated for a two channel measuring setup with two AE sensors. The proposed testing method can be used to obtain information on voids, cracks or air bubbles in metal-insulator-metal structures.

Anglický abstrakt

Partial discharges occur when voltage applied to insulating sheets reaches a critical value which is characteristic for given insulator. The partial discharges are accompanied by acoustic emission events. The acoustic emission signal is measured by a piezoceramic sensor and partial discharges are detected by means of voltage pulses on a load resistance. While a spike of a partial discharge appears immediately, an acoustic event signal is delayed. The time interval depends on the distance of the place where partial discharge is created and the wave velocity propagation of an acoustic emission signal. The position of PD source can be estimated for a two channel measuring setup with two AE sensors. The proposed testing method can be used to obtain information on voids, cracks or air bubbles in metal-insulator-metal structures.

Klíčová slova v angličtině

partial discharges, acoustic emission, electric charge

Autoři

KOKTAVÝ, P., KOKTAVÝ, B., ŠIKULA, J.

Vydáno

01.01.2005

Nakladatel

Czech Society for Non-destructive Testing

Místo

Průhonice

ISBN

80-214-2996-8

Kniha

Proceedings of 3rd Workshop NDT in Progress, International Meeting of NDT Experts

Strany od

153

Strany počet

6

BibTex

@inproceedings{BUT15278,
  author="Pavel {Koktavý} and Bohumil {Koktavý} and Josef {Šikula}",
  title="Partial Discharges and Acoustic Emission In Insulating Materials",
  booktitle="Proceedings of 3rd Workshop NDT in Progress, International Meeting of NDT Experts",
  year="2005",
  pages="6",
  publisher="Czech Society for Non-destructive Testing",
  address="Průhonice",
  isbn="80-214-2996-8"
}