Publication detail

Characterization of acoustic and electromagnetic emission sources

KOKTAVÝ, P. PAVELKA, J. ŠIKULA, J.

Original Title

Characterization of acoustic and electromagnetic emission sources

Type

journal article - other

Language

English

Original Abstract

Cracks creation is accompanied by electric charge redistribution due to loosened chemical bonds. Electric charges on crack walls create dipole moments. Crack wall vibrations produce time dependent dipole moments and, consequently, electric and magnetic fields are generated. An electric signal is induced on metal electrodes. Information about the crack wall vibration was obtained from this signal analysis. For crack lengths below 1 mm the respective electrical signal has a frequency of over 2 MHz. In this paper the frequency analysis was performed in a frequency band of up to 5 MHz.

Keywords

Cracks creation, Electromagnetic emission, electric charge, Acoustic emission

Authors

KOKTAVÝ, P.; PAVELKA, J.; ŠIKULA, J.

RIV year

2004

Released

1. 1. 2004

ISBN

0957-0233

Periodical

Measurement Science and Technology

Year of study

15

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

973

Pages to

977

Pages count

5

BibTex

@article{BUT42289,
  author="Pavel {Koktavý} and Jan {Pavelka} and Josef {Šikula}",
  title="Characterization of acoustic and electromagnetic emission sources",
  journal="Measurement Science and Technology",
  year="2004",
  volume="15",
  number="1",
  pages="973--977",
  issn="0957-0233"
}