10.14489/td.2014.010.pp.036-044

2014, 10 October

DOI: 10.14489/td.2014.010.pp.036-044

Komarov V. A.
MODELING MANIFESTATIONS OF ELECTROMAGNETIC-ACOUSTIC TRANSFORMATION IN METALS. PART 4
(pp. 36-44)

Abstract. The calculation for projections of secondary field induction in the air, appearing after a double electromagnetic-acoustic transformation in the solid non-ferromagnetic conducting body due to the inductive mechanism of fields transformation is made. The normal component of the secondary electromagnetic field in the near zone and transition area of radiation, which is used in practice, does not give information about the behavior of elastic displacements of the shear wave. The tangential component of electromagnetic field can be used for correlation with elastic displacements. It is shown that the EMF induced in the far field of radiation is determined by the peripheral part of the normal component of the secondary field in cause of spatially separated transmitter and receiver. It is found that the relationship between the amplitude of the secondary field and the EMF induced in the receiver coil largely varies with the size of the inductor. The experimental measurements of the topography of the secondary field have been compared with the calculated results. The satisfactory compliance of the values is shown.

Keywords: the double electromagnetic acoustic transformation, components of the secondary electromagnetic field, peripheral part of the normal component, the size of the inductor.

+ - About the Authors Click to collapse

V. A. Komarov
Physical-Technical Institute of the Ural Branch of the Russian Academy of Sciences, Izhevsk, Russia. E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

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3. Komarov V. A. (2014). Modeling manifestation of electromagnetic-acoustic transformation in metals. Part 3.The dependence of the directional characteristic of plated transducer on its geometry and frequency of the emission. Kontrol'. Diagnostika, (9), pp. 17-24. doi: 10.14489/td.2014.09.pp.017-024.
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