Publication result detail

Noise Spectroscopy and Diagnostics of High Temperature Insulating Materials

KOKTAVÝ, B., KOKTAVÝ, P.

Original Title

Noise Spectroscopy and Diagnostics of High Temperature Insulating Materials

English Title

Noise Spectroscopy and Diagnostics of High Temperature Insulating Materials

Type

Paper in proceedings (conference paper)

Original Abstract

The samples of insulation materials for operation at temperatures to 350 oC were tested in a high electric field. Tested materials covered with metal electrodes on both sides represent a parallel plate capacitor. The VA characteristics are proportional to Un where n  1. Partial discharges have an impact on conductivity at a high electric field and they are important sources of noise and acoustic emission signals. This phenomenon is related to the sample homogeneity and may be used for technology assessment and quality testing. The electromagnetic signal precedes the acoustic emission response and the time delay corresponds to the difference of propagation velocities of sound and electromagnetic radiation in the sample.

English abstract

The samples of insulation materials for operation at temperatures to 350 oC were tested in a high electric field. Tested materials covered with metal electrodes on both sides represent a parallel plate capacitor. The VA characteristics are proportional to Un where n  1. Partial discharges have an impact on conductivity at a high electric field and they are important sources of noise and acoustic emission signals. This phenomenon is related to the sample homogeneity and may be used for technology assessment and quality testing. The electromagnetic signal precedes the acoustic emission response and the time delay corresponds to the difference of propagation velocities of sound and electromagnetic radiation in the sample.

Keywords

Insulating material, Partial discharges, Noise, Acoustic emission

Key words in English

Insulating material, Partial discharges, Noise, Acoustic emission

Authors

KOKTAVÝ, B., KOKTAVÝ, P.

RIV year

2011

Released

01.01.2004

Publisher

Ing. Zdeněk Novotný, CSc.

Location

Brno

ISBN

80-7355-024-5

Book

New Trends in Physics

Pages from

52

Pages count

4

BibTex

@inproceedings{BUT12115,
  author="Bohumil {Koktavý} and Pavel {Koktavý}",
  title="Noise Spectroscopy and Diagnostics of High Temperature Insulating Materials",
  booktitle="New Trends in Physics",
  year="2004",
  pages="4",
  publisher="Ing. Zdeněk Novotný, CSc.",
  address="Brno",
  isbn="80-7355-024-5"
}