Detail publikačního výsledku

Characterization of acoustic and electromagnetic emission sources

KOKTAVÝ, P.; PAVELKA, J.; ŠIKULA, J.

Originální název

Characterization of acoustic and electromagnetic emission sources

Anglický název

Characterization of acoustic and electromagnetic emission sources

Druh

Článek recenzovaný mimo WoS a Scopus

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.

Anglický 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

Klíčová slova v angličtině

Cracks creation, Electromagnetic emission, electric charge, Acoustic emission

Autoři

KOKTAVÝ, P.; PAVELKA, J.; ŠIKULA, J.

Rok RIV

2011

Vydáno

01.01.2004

ISSN

0957-0233

Periodikum

MEASUREMENT SCIENCE and TECHNOLOGY

Svazek

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"
}