Detail publikace

Characterization of acoustic and electromagnetic emission sources

KOKTAVÝ, P. PAVELKA, J. ŠIKULA, J.

Originální název

Characterization of acoustic and electromagnetic emission sources

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

Cracks creation, Electromagnetic emission, electric charge, Acoustic emission

Autoři

KOKTAVÝ, P.; PAVELKA, J.; ŠIKULA, J.

Rok RIV

2004

Vydáno

1. 1. 2004

ISSN

0957-0233

Periodikum

Measurement Science and Technology

Ročník

15

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

973

Strany do

977

Strany počet

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"
}