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Nondestructive control of objects made of electroconductive materials in pulsed magnetic fields

  • Magnetic Methods
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Abstract

We have measured the values of the maximum tagential component of magnetic field strength H τm on the surfaces of metal objects as a function of the time of increase in charge pulses and as a function of sample thickeness. We have found the empirical formulas of dependence H τSm of the secondary field on sample thicknesses and on the time of increase in pulses, for which we give a theoretical explanation. We expound on methods for controlling the electric and magnetic properties of objects, as well as their geometric parameters and integrity defects in them.

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Abbreviations

σ:

specific electroconductivity of a material

μ:

relative magnetic permeability

H :

value of magnetic field strength

H τ :

value of tangential component of magnetic field strength

H τm :

value of maximum H τ

H τ0m :

value of H τm of the primary source

H τSm :

value of H τm of the secondary source

t max :

time of increase in magnetic field pulse

d :

sample thickness

x, y, z :

Cartesian coordinates

MC:

magnetic carrier

MH:

magnetic head

HC:

Hall converter

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Authors and Affiliations

  1. Faculty of Powerplant Construction, Belarussian National Technical University, Minsk, Belarus

    V. V. Pavlyuchenko & E. S. Doroshevich

Authors
  1. V. V. Pavlyuchenko
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  2. E. S. Doroshevich
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Correspondence to V. V. Pavlyuchenko.

Additional information

Original Russian Text © V.V. Pavlyuchenko, E.S. Doroshevich, 2010, published in Defektoskopiya, 2010, Vol. 46, No. 11, pp. 29–40.

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Pavlyuchenko, V.V., Doroshevich, E.S. Nondestructive control of objects made of electroconductive materials in pulsed magnetic fields. Russ J Nondestruct Test 46, 810–818 (2010). https://doi.org/10.1134/S1061830910110045

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  • DOI: https://doi.org/10.1134/S1061830910110045

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