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(Color online) (a) Experimental setup for the investigation of the Lamb wave radiation pattern depending on the relative orientation angle between actuating and biasing magnetic fields. (b) Cross section of a circular magnetostrictive patch-type transducer.
(Color online) (a) Voltage signals measured by for , 30°, 60°, and 90°. (b) Radiation pattern of the Lamb wave mode for various values of (dots: experimental results, solid lines: theoretical results). (c) Maximum amplitude of the Lamb wave mode for varying ’s (solid lines: theoretical results, bars: experimental results).
Mechanism of elastic wave transduction by magnetostriction and inverse magnetostriction by a nickel patch bonded to an aluminum plate (NP: nickel patch, AP: aluminum plate).
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