Detail publikačního výsledku

Acoustic and electromagnetic emission as a tool for crack localization

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

Originální název

Acoustic and electromagnetic emission as a tool for crack localization

Anglický název

Acoustic and electromagnetic emission as a tool for crack localization

Druh

Článek recenzovaný mimo WoS a Scopus

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

acoustic emission, electromagnetic emission, cracks, localization

Klíčová slova v angličtině

acoustic emission, electromagnetic emission, cracks, localization

Autoři

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

Rok RIV

2010

Vydáno

07.02.2008

Nakladatel

IOP Publishing

Místo

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

ISSN

0957-0233

Periodikum

MEASUREMENT SCIENCE and TECHNOLOGY

Svazek

19

Číslo

4

Stát

Spojené království Velké Británie a Severního Irska

Strany do

045701

Strany počet

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"
}