MISC

2008年4月

Acoustic and electromagnetic emission as a tool for crack localization

MEASUREMENT SCIENCE AND TECHNOLOGY
  • P. Sedlak
  • ,
  • J. Sikula
  • ,
  • T. Lokajicek
  • ,
  • Y. Mori

19
4
開始ページ
045701(7pp)
終了ページ
記述言語
英語
掲載種別
DOI
10.1088/0957-0233/19/4/045701
出版者・発行元
IOP PUBLISHING LTD

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.

リンク情報
DOI
https://doi.org/10.1088/0957-0233/19/4/045701
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000254406700035&DestApp=WOS_CPL
ID情報
  • DOI : 10.1088/0957-0233/19/4/045701
  • ISSN : 0957-0233
  • eISSN : 1361-6501
  • Web of Science ID : WOS:000254406700035

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