Numerical calibration of fluxset probe for quantitative eddy current testing

• József Pávó ^[1] ; Antal Gasparics ^[2]
  1. [1] Department of Electromagnetic Theory, Technical University of Budapest, Hungría
  2. [2] Research Institute for Technical Physics and Materials Science, Hungarian Academy of Sciences, Hungría
• Localización: Compel: International journal for computation and mathematics in electrical and electronic engineering, ISSN 0332-1649, Vol. 18, Nº 3, 1999, págs. 436-444
• Idioma: inglés
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• Resumen

  • Fluxset type eddy current probes are used for detecting discontinuities in conducting materials. The measurements obtained by such probes can be used for the reconstruction of the parameters of the detected discontinuity if the output signal of the measurement is uniquely related to the measured field. In this paper a calibration method is presented for the establishment of the relation between the measured magnetic field and the output signal of the probe. The relation is obtained by the optimisation of the parameters of the mapping between the calculated magnetic field distribution and the measured output signal. The magnetic field distribution due to the interaction of the probe and an infinitesimally thin crack located in a conducting plate is calculated numerically by the solution of a boundary integral equation.