Measurement of one field component to assess the eddy current surface current density

This In this paper we present a method to determine the current density inside an aluminum plate subject to a eddy current testing procedure to determine the existence of surface cracks. The general idea consists in generating eddy currents in the plate, which in the case of flawless material, must...

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Published in2016 IEEE Metrology for Aerospace (MetroAeroSpace) pp. 276 - 279
Main Authors Lopes Ribeiro, A., Pasadas, D. J., Ramos, H. G., Rocha, T.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2016
Subjects
Current density
Density measurement
eddy current testing
Eddy currents
inverse problem
Magnetic field measurement
Magnetic fields
Probes
Tikhonov regularization
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DOI10.1109/MetroAeroSpace.2016.7573226

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Abstract This In this paper we present a method to determine the current density inside an aluminum plate subject to a eddy current testing procedure to determine the existence of surface cracks. The general idea consists in generating eddy currents in the plate, which in the case of flawless material, must be of uniform density pointing along a pre-defined direction inside a given area on the plate surface. These currents are produced using a planar coil. The eddy current density is determined by inversion of the data obtained my measurement of one single component of the resulting magnetic field. Tikhonov regularization is applied to the inverted data.
AbstractList This In this paper we present a method to determine the current density inside an aluminum plate subject to a eddy current testing procedure to determine the existence of surface cracks. The general idea consists in generating eddy currents in the plate, which in the case of flawless material, must be of uniform density pointing along a pre-defined direction inside a given area on the plate surface. These currents are produced using a planar coil. The eddy current density is determined by inversion of the data obtained my measurement of one single component of the resulting magnetic field. Tikhonov regularization is applied to the inverted data.
Author Pasadas, D. J.
Ramos, H. G.
Lopes Ribeiro, A.
Rocha, T.
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  fullname: Rocha, T.
  organization: Inst. de Telecomun., Univ. de Lisboa, Lisbon, Portugal
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Snippet This In this paper we present a method to determine the current density inside an aluminum plate subject to a eddy current testing procedure to determine the...
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StartPage 276
SubjectTerms Current density
Density measurement
eddy current testing
Eddy currents
inverse problem
Magnetic field measurement
Magnetic fields
Probes
Tikhonov regularization
Title Measurement of one field component to assess the eddy current surface current density
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