Publication detail

Acoustic and electromagnetic emission as a tool for crack localization

Sedlak, P., Sikula, J., Lokajicek T., Mori Y.

Original Title

Acoustic and electromagnetic emission as a tool for crack localization

Type

journal article - other

Language

English

Original Abstract

The creation of cracks is accompanied by electric charge redistribution due to loosened chemical bounds. Electric charge on a crack wall creates dipole moments. Vibrations of crack walls produce time-dependent dipole moments and, consequently, electric and magnetic fields are generated. An electric signal is induced on metal electrodes. Simultaneously with the electromagnetic emission (EME) signal, an acoustic emission (AE) signal is generated, but due to the different velocities of propagation of both waves, the detection of the AE signal is delayed. This time delay presents the time of the wave propagation from the individual acoustic emission sensor to the crack. The defect can be located by means of these time intervals. This paper describes the localization using acoustic and electromagnetic emission signals for the two-dimensional case.

Keywords

acoustic emission, electromagnetic emission, cracks, localization

Authors

Sedlak, P., Sikula, J., Lokajicek T., Mori Y.

RIV year

2008

Released

7. 2. 2008

Publisher

IOP Publishing

Location

online doi: 10.1088/0957-0233/19/4/045701

ISBN

0957-0233

Periodical

Measurement Science and Technology

Year of study

19

Number

4

State

United Kingdom of Great Britain and Northern Ireland

Pages to

045701

Pages count

7

URL

http://www.iop.org/EJ/abstract/0957-0233/19/4/045701

BibTex

@article{BUT48946,
  author="Petr {Sedlák} and Josef {Šikula} and Tomáš {Lokajíček} and Yasuhiko {Mori}",
  title="Acoustic and electromagnetic emission as a tool for crack localization",
  journal="Measurement Science and Technology",
  year="2008",
  volume="19",
  number="4",
  pages="7",
  issn="0957-0233",
  url="http://www.iop.org/EJ/abstract/0957-0233/19/4/045701"
}