DOI: https://doi.org/10.15407/techned2019.06.018
IMPROVING PRINCIPLES OF ELECTRIC ENERGY PULSE TRANSFORMATION INTO HIGH-FREQUENCY MECHANICAL ENERGY USING CAPACITIVE METHOD
Journal |
Tekhnichna elektrodynamika |
Publisher |
Institute of Electrodynamics National Academy of Science of Ukraine |
ISSN |
1607-7970 (print), 2218-1903 (online) |
Issue |
No 6, 2019 (November/December) |
Pages |
18 - 24 |
Authors O.N. Petrishchev2*, K.L. Nozdrachova1**, G.M. Suchkov1***, R.P. Mygushchenko1****, O.Yu. Kropachek1*****, S.Yu. Plesnetsov1****** 1- National Technical University Kharkiv Polytechnic Institute, 2, Kirpichova str., Kharkiv, 61002, Ukraine, e-mail:
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2- National Technical University of Ukraine Igor Sikorsky Kyiv Polytechnic Institute, pr. Peremohy, 37, Kyiv, 03056, Ukraine, e-mail:
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* ORCID ID : http://orcid.org/0000-0003-2984-1340 ** ORCID ID : http://orcid.org/0000-0002-1996-2301 *** ORCID ID : http://orcid.org/0000-0002-1805-0466 **** ORCID ID : http://orcid.org/0000-0002-3287-9772 ***** ORCID ID : http://orcid.org/0000-0001-5899-0252 ****** ORCID ID : http://orcid.org/0000-0001-8428-5426
Abstract
Closed solutions of electrostatic and electrodynamics problems are formed in metals for a piecewise-homogeneous medium, where half-space is filled with metal of finite values having electrical conductivity and magnetic permeability being implemented within the framework of a mathematical model for capacitive type sensor when converting electrical energy into high-frequency mechanical (ultrasonic). It is shown that a disk transducer of a capacitive type excites forces acting normally on the surface of an electrically conductive product. A quantitative assessment of Coulomb forces for the surface density is carried out. The main factors determining a disk converter sensitivity of capacitive type are stated. Capacitive transducers should be used for measuring, control and diagnostic equipment. References 10, figures 3.
Key words: mathematical modeling, ultrasonic sensor model, capacitive transducers, electric field, charge density, electrode, impulses, measurements, diagnostics.
Received: 19.04.2019 Accepted: 06.06.2019 Published: 25.10.2019
The work is funded by the authors
References 1. Ermolov I.N., Lange Yu.V. Nondestructive testing: handbook. Vol. 3: Ultrasonic testing. Moskva: Mashinostroenie, 2004. 864 p. (Rus) 2. Palmer S.B. S. Dixon. Industrially viable non-contact ultrasound. Insight. 2003. Vol. 45. No 3. Pp. 211–217. DOI: https://doi.org/10.1784/insi.45.3.211.53154 3. Migushchenko R.P., Suchkov G.M., Radev H.K., Petrishchev O.N., Desyatnichenko A.V. Electromagnetic-acoustic transducer for ultrasonic thickness gauging of ferromagnetic metal products without removing the dielectric coating. Tekhnichna Elektrodynamika. 2016. No 2. Pp.78-82. (Rus) DOI: https://doi.org/10.15407/techned2016.02.078 4. Suchkov G.M., Alekseev E.A., Zaharenko V.V. Energy and resource-saving devices and technologies of non-destructive testing. Tekhnicheskaia diagnostika i nerazrushaiushchii kontrol. 2006. No 4. Pp. 29–34. (Rus) 5. Zaytseva L.V. Film heterosystems of capacitors based on polyamide, indium oxides, tin and aluminum. PhD thesis: 01.04.07, Institute of electric physics and radiation technologies NAN of Ukraine. Kharkiv. 2015. 190 p. (Ukr) 6. Wright W.M.D., Hutchins D.A. Air-coupled testing of metals using broadband pulses in through-transmission. Ultrasonics 37. 1999. No 37. Pp. 19-22. DOI: https://doi.org/10.1016/S0041-624X(98)00034-1 7. Suchkov G.M., Petrishchev O.N., Nozdracheva E.L., Romanyuk M.I. Excitation of ultrasonic waves in metals by a capacitive transducer. Part 1. Tekhnicheskaia diagnostika i nerazrushaiushchii kontrol. 2015. No 1. Pp. 45-50. (Rus) 8. Tamm I.E. Foundations of electricity theory. Moskva: Nauka, 1976. 616 p. (Rus) 9. Koshlyakov N.S., Gliner E.B., Smirnov M.M. Mathematical physics equations in partial derivatives. Moskva: Vysshaia shkola, 1970. 710 p. (Rus) 10. Feynman R., Leyton R., Sends M. Feynman’s lectures on physics. Vol. 5. Elektrichestvo i magnetizm. Moskva: Mir, 1966. 296 p. (Rus)
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