Nondestructive material evaluation by novel electromagnetic methods

Gábor Vértesy, Antal Gasparics

Research output: Contribution to journalConference article

5 Citations (Scopus)

Abstract

A high sensitivity magnetic field sensor, which has recently been developed, is applied for non-destructive testing. The sensor can be effectively utilized for the detection of defects in conducting materials using eddy current testing measurements. The principle of this measuring technique is based on the combination of the detection of changes in the eddy current magnetic field and the variation of magnetic polarization of the sample due to the presence of the defect. The capability of this technique has been demonstrated by measurements performed on different specimens. The sensor was also applied for measuring the magnetic leakage in plastically deformed, ferromagnetic, low alloy steel samples. High resolution and high sensitivity were achieved, strong inhomogeneities were revealed in the investigated sample, and the fine structure of the magnetic flux distribution was detected.

Original languageEnglish
Pages (from-to)343-352
Number of pages10
JournalMaterials Science Forum
Volume414-415
DOIs
Publication statusPublished - Jan 1 2003
Event3rd Hungarian Conference on Materials Science, Testing and Informatics - Balatonfured, Hungary
Duration: Oct 14 2001Oct 17 2001

Keywords

  • Eddy current testing
  • Magnetic field sensing
  • Magnetic flux leakage measurement

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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