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Impact of magnetostriction mechanism on frequency manipulation ultrasonic steering in electromagnetic acoustic transducers

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  • Additional Information
    • Publication Information:
      Institution of Engineering and Technology (IET), 2024.
    • Publication Date:
      2024
    • Abstract:
      In this paper, the impact of the magnetostriction mechanism is considered as the focus. An axisymmetric FEM model of the spiral‐coil electromagnetic acoustic transducers (EMAT) is established to conduct the simulation. The simulation results demonstrate that the directivity of ultrasonic wave can be controlled by manipulating the frequency. Furthermore, it is found that the direction of the dominant Lorentz force in the rail varies with time, while the magnetostrictive force compels the ultrasonic wave generated by the Lorentz force towards the axis. It effectively illustrates that the combined power of two mechanisms surpasses that of the Lorentz‐force mechanism alone, particularly at low frequencies.
    • ISSN:
      1350-911X
      0013-5194
    • Accession Number:
      10.1049/ell2.12987
    • Rights:
      CC BY NC
    • Accession Number:
      edsair.doi.dedup.....a2570902292cf2eb8ecb0f27f697dc82