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

• Published in: Electronics letters Vol. 60; no. 1
• Main Author: Li, Yong
• Format: Journal Article
• Language: English
• Published: Stevenage John Wiley & Sons, Inc 01.01.2024; Wiley
• Subjects: acoustic field; acoustic transducers; Acoustics; Conflicts of interest; Directivity; electromagnetic induction; Lorentz force; Magnetic fields; Magnetostriction; non‐destructive testing; Simulation; Steering; Transducers

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...