Magnetostrictive actuators are devices that make use of two evidence of magnetostriction, i.e., the so-called Joule and Wiedemann effects, wirelessly induced by a magnetic field applied to the bare material. The essence itself of those effects, that is the conversion of electric into mechanical energy within the material characteristic, allows the design of relatively simpler devices with respect to the conventional counterparts, electromagnetics, and hydraulic actuators. Magnetostrictives share advantages with other smart materials based actuators but have higher energy density and, being metallic in nature, are less prone to fatigue with respect to piezoelectrics. Their applications span from high precision actuation to vibrations suppression and, recently, in mems technology, thanks to their wireless actuation.

Introduction to Magnetostrictive Actuators

Davino D.
2021-01-01

Abstract

Magnetostrictive actuators are devices that make use of two evidence of magnetostriction, i.e., the so-called Joule and Wiedemann effects, wirelessly induced by a magnetic field applied to the bare material. The essence itself of those effects, that is the conversion of electric into mechanical energy within the material characteristic, allows the design of relatively simpler devices with respect to the conventional counterparts, electromagnetics, and hydraulic actuators. Magnetostrictives share advantages with other smart materials based actuators but have higher energy density and, being metallic in nature, are less prone to fatigue with respect to piezoelectrics. Their applications span from high precision actuation to vibrations suppression and, recently, in mems technology, thanks to their wireless actuation.
9780128157336
Active vibration control
Actuators
Cantilevers
Hysteresis
Joule effect
Magnetostriction
Mems
Micropositioning
Thin films
Wiedemann effect
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12070/56260
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