Detail publikace

Acoustic and electromagnetic emission sources characterization

ŠIKULA, J., PAVELKA, J., KOKTAVÝ, P., MAJZNER, J.

Originální název

Acoustic and electromagnetic emission sources characterization

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

Cracks creation is accompanied by emission of phonons and by electric charge redistribution due to chemical bonds loosen. Sample dimensions and velocity of wave propagation determine vibration frequencies. Electric charges on crack walls create a dipole momentum and crack wall vibrations produce time dependent electric and magnetic fields. An electric signal is induced on metal electrodes and after its analysis is carried out information on the crack wall movement can be obtained. 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 frequency band up to 2 MHz.

Klíčová slova

acoustic, electromagnetic, emission, sources characterisation

Autoři

ŠIKULA, J., PAVELKA, J., KOKTAVÝ, P., MAJZNER, J.

Rok RIV

2003

Vydáno

1. 1. 2003

Nakladatel

Technical University of Brno

Místo

Brno

ISBN

80-7204-318-8

Kniha

Workshop NDT CMC 2003 - Non-Destructive Testing of Civil Materials and Constructions - Proceedings

Číslo edice

1

Strany od

151

Strany do

156

Strany počet

6

BibTex

@inproceedings{BUT9247,
  author="Josef {Šikula} and Jan {Pavelka} and Pavel {Koktavý} and Jiří {Majzner}",
  title="Acoustic and electromagnetic emission sources characterization",
  booktitle="Workshop NDT CMC 2003 - Non-Destructive Testing of Civil Materials and Constructions - Proceedings",
  year="2003",
  number="1",
  pages="6",
  publisher="Technical University of Brno",
  address="Brno",
  isbn="80-7204-318-8"
}