Nondestructive material evaluation by novel electromagnetic methods

G. Vértesy, Antal Gasparics

Research output: Contribution to journalArticle

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
Publication statusPublished - 2003

Fingerprint

electromagnetism
evaluation
Sensors
eddy currents
Magnetic fields
Eddy current testing
Magnetic leakage
sensors
Defects
Magnetic flux
Eddy currents
Nondestructive examination
High strength steel
high strength steels
sensitivity
defects
magnetic fields
Polarization
magnetic flux
inhomogeneity

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Nondestructive material evaluation by novel electromagnetic methods. / Vértesy, G.; Gasparics, Antal.

In: Materials Science Forum, Vol. 414-415, 2003, p. 343-352.

Research output: Contribution to journalArticle

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