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The National Academy of Sciences of Ukraine

The Institute of Electrodynamics

About Institute



Yu. Vasetskyi1, I. Kondratenko2, O. Pashchyn3, K. Dziuba4
1,2,4 – Institute of Electrodynamics of the National Academy of Sciences of Ukraine,
Peremohy, 56, Kyiv-57, 03680, Ukraine,
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3 – Institute of Electric Welding Paton of the National Academy of Sciences of Ukraine,
Malevich st, 11, Kyiv-150, 03150, Ukraine

The possibility of using of contactless induction method for the introduction of pulse current into aluminum sheet for processing welding seam is considered. Due to the effect of a magnetic pressure, mechanical stresses occur in the material and induced high-density currents flow. The necessary values of the inductor current, the distribution of magnetic pressure, and the induced current density of the sheet are estimated using the design model of a rectilinear current conductor of circular cross-section. It is found that with a strong skin-effect, the magnetic pressure reaches the yield point only under the condition of an ultrahigh current density of the current contour. The expediency of using of pulse electromagnetic field for seam treatment with high-density currents or combined method with the simultaneous use of high-density currents and electrodynamics methods of action on the seam is substantiated. References 9, figures 8.
Key words: electromagnetic field, pulse electric current, strong skin-effect, weld seam, metal tape.

1. Stepanov G.V., Babutskyi A.I.. Effect of high-density pulsed electric current on a strength of metallic materials and a stress-strain state of structural elements. Kyiv: Nauk. dumka, 2014. 279 p. (Rus)
2. Baranov Yu.V., Troitskyi O.A., Avraamov Yu.S. Physical basis of electropulse and electroplastic treatments, and new materials. Moskva: MGIU, 2001. 844 p. (Rus)
3. Lobanov L.M., Pashchin N.A., Loginov V.P., Pokliatskyi A.T. Effect of an electropulse treatment on a residual formation of thin-sheeted welding design. Avtomaticheskaya svarka. 2010. № 3. P. 13–17. (Rus)
4. Panin V.E.. Fundamentals of physical mesomechanics. Fiz. mezomekhanika. 1998. Volume 1. P. 5–22. (Rus)
5. Polivanov K.M. Theoretical foundations of electrical engineering. Part 3. Theory of electromagnetic field. Moskva: Energiya, 1969. 352 p. (Rus)
6. Knopfel G. Ultrastrong pulsed magnetic fields. Moskva: Mir, 1972. 392 p. (Rus)
7. Mikhailov V.M.. Pulsed electromagnetic fields. Kharkov: Vyshcha shk. Publishing house at Kharkov University, 1979. 140 p. (Ukr)
8. Vasetskyi Yu.M. Electrodynamics. Basic concepts, potential and quasistationary fields. Kyiv: Vydavnytstvo Nats. aviats. Universytetu NAU-druk, 2009. 160 p. (Ukr)
9. Vasetskyi Yu. Mazurenko I., Dziuba K. Conditions for Application of Asymptotic Method to Electromagnetic Field Analysis in System of a Current Loop – an Eletroconducting Body. Computational Problems of Electrical Engineering. 2014. Vol. 4. N 1. P. 91–96.