Peculiarities of Electromagnetic-Acoustic Transformation in the Presence of Mechanical Stresses: III. Internal Stresses
Source abstract
Abstract
Experimental results are presented that demonstrate the behavior of the emf amplitude of double electromagnetic-acoustic transformation (EMAT) in samples of ferromagnets in the presence of internal stresses produced by both heat treatment and tension of samples to stresses exceeding the yield value. It is shown that, regardless of the sign of the saturation magnetostriction and the method for producing internal stresses, the appearance of internal stresses abruptly reduces the EMAT efficiency. A model calculation, which is based on the fact that the magnetoelastic energy associated with internal stresses plays the main role, has shown the same tendency in the dependence of EMAT on stresses as is offered by experimental results.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Material Properties and Failure Mechanisms · Microstructure and Mechanical Properties of Steels · Magnetic Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (8)
Show source-provided references
1. Muzhitskii, V.F. and Komarov, V.A., Electromagnetic-Acoustic Transformation under Mechanical Stresses: I. Applied Stresses—Experimental Data, Defektkoskopiya, 2005, no. 10, pp. 81–92 [Rus. J. of Nondestructive Testing (Engl. Transl.), 2005, vol. 41, no. 11, pp. 682–690].10.1007/s11181-006-0018-3 ↗
2. Muzhitskii, V.F. and Komarov, V.A., Electromagnetic-Acoustic Transformation under Mechanical Stresses: II. Modeling the Effect of Applied Stresses on EMAT, Defektkoskopiya, 2005, no. 11, pp. 58–69 [Rus. J. of Nondestructive Testing (Engl. Transl.), 2005, vol. 41, no. 11, pp. 747–754].10.1007/s11181-006-0029-0 ↗
3. Vonsovskii, S.V. and Shur, Ya.S., Ferromagnetizm (Ferromagnetism), Moscow: OGIZ, 1948.
4. Bozorth, R.M., Ferromagnetism, New York: D. van Nostrand, 1951. Translated under the title Ferromagnetizm, Moscow: Izd. Inostrannoi Literatury, 1956.
5. Birger, I.A., Ostatochnye napryazheniya (Residual Stresses), Moscow: Mashgiz, 1963.
6. Kudryavtsev, I.V., Vnutrennie napryazheniya kak rezerv prochnosti v mashinostroenii (Internal Stresses as a Strength Reserve in Machine Building), Moscow: Mashgiz, 1951.
7. Komarov, V.A., Kvazistatsionarnoe elektromagnitno-akusticheskoe preobrazovanie v metallakh (Quasi-stationary Electromagnetic-Acoustic Transformation in Metals), Sverdlovsk: Ural. Nauchn. Tsentr Akad. Nauk SSSR, 1986.
8. Thompson, R.B., Strain Dependence of Electromagnetic Generation of Ultrasonic Surface Waves in Ferrous Metals, Appl. Phys. Lett., 1976, vol. 28, no.9, pp. 483–485.10.1063/1.88852 ↗