10.14489/td.2022.09.pp.024-034

2022, 09 September

DOI: 10.14489/td.2022.09.pp.024-034

Komarov V. A.
MAGNETОELASTIC ELECTROMAGNETIC-ACOUSTIC TRANSFORMATION. PART 8
(pp. 24-34)

Abstract. The generation of zero-mode Lamb waves in a magnetoelastic conductive plate with a thickness of 2d is considered at the constraint qt d < 1 using a radiation source model in the form of spaced apart conductors with alternating currents of opposite phases. It has been shown that, in contrast to bulk waves, Lamb waves are formed by the interference of the incident at angle φ and reflected waves under the condition sinφ > 1. Expressions are obtained for projections of displacements of symmetric and antisymmetric modes under the Joule effect, and expressions are given for projections of displacements under the Wiedemann effect. Diagrams are presented showing that the highest generation efficiency occurs in the first variant at the increased electrical conductivity of the plates. In the second case the highest generation efficiency appears at low electrical conductivity of the samples.

Keywords: Lamb waves, magnetoelasticity, conducting medium, direct electromagnetic-acoustic conversion.

+ - About the Authors Click to collapse

V. A. Komarov (Physical-Technical Institute, Udmurt Federal Research Center 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

1. Viktorov A. I. (1966). Physical bases of application of Rayleigh and Lamb ultrasonic waves in engineering. Moscow: Nauka. [in Russian language]
2. Bobrov V. T., Sviridov Yu. M., Nikiforenko Zh. G. et al. (1989). Electromagnetic excitation of acoustic waves and their interaction with defects in bounded solids. Tekhnicheskaya diagnostika i nerazrushayushchiy kontrol', (2), pp. 19 – 29. [in Russian language]
3. Nikiforenko Zh. G., Bobrov V. T., Averbuh I. I. (1972). Propagation of Lamb waves in anisotropic sheets. Defektoskopiya, (5), pp. 56 – 63. [in Russian language]
4. Komarov V. A., Muzhitskiy V. F., Gurevich S. Yu. (1998). Theory of physical fields. Vol. II. Acoustic field. Chelyabinsk–Izhevsk: YuUrGU. [in Russian language]
5. Komarov V. A. (1986). Quasi-stationary electro-magnetic-acoustic transformation in metals. Sverdlovsk: UNTs AN SSSR. [in Russian language]
6. Komarov V. A., Muzhitskiy V. F., Gurevich S. Yu. (2000). Theory of physical fields. Vol. III. Related fields. Chelyabinsk–Izhevsk: YuUrGU. [in Russian language]
7. Larsen P. K., Saermark K. (1968). Electromagnetic Excitation of Elastic Modes in Aluminium. Physics Letters A, Vol. 26, pp. 296 – 297.
8. Larsen P. K., Saermark K. (1967). Helicons and Acoustic Shear Waves in Aluminium. Physics Letters A, Vol. 24, pp. 668 – 669.
9. Komarov V. A., Shakshin N. I. (1976). Electromagnetic-acoustic generation in polycrystalline non-ferromagnetic metals with continuous radiation of an electromagnetic field by inductive transducers. Fizika metallov i metallovedenie, Vol. 42, (4), pp. 716 – 722. [in Russian language]
10. Varvak P. V., Ryabov A. F. (Eds.) (1971). Handbook of Elasticity Theory. Kiev: Budivel'nik. [in Russian language]
11. Komarov V. A. (2016). Magnetoelastic electromagnetic-acoustic transformation. Part 1. Magnetic susceptibility in a magnetically polarized medium using an attached emitter. Kontrol'. Diagnostika, (10), pp. 22 – 32. DOI: 10.14489/td.2016.10.pp.022-032
12. Komarov V. A. (2017). Magnetoelastic electromagnetic-acoustic transformation. Part 2. Acoustic field created by the Joule effect. Kontrol'. Diagnostika, (8), pp. 34 – 43. [in Russian language] DOI: 10.14489/td.2017.08.pp.034-043

+ - Purchase digital version of a single article Click to collapse

This article is available in electronic format (PDF).

The cost of a single article is 500 rubles. (including VAT 20%). After you place an order within a few days, you will receive following documents to your specified e-mail: account on payment and receipt to pay in the bank.

After depositing your payment on our bank account we send you file of the article by e-mail.

To order articles please copy the article doi:

10.14489/td.2022.09.pp.024-034

and fill out the form