Design and application of magnetostrictive materials

By A. Olabi, A. Grunwald. 2008

495 citations recorded by the source corpus.

Abstract Magnetostriction is the change in shape of materials under the influence of an external magnetic field. The cause of magnetostriction change in length is the result of the rotation of small magnetic domains. This rotation and re-orientation causes internal strains in the material structure. The strains in the structure lead to the stretching (in the case of positive magnetostriction) of the material in the direction of the magnetic field. During this stretching process the cross-section is reduced in a way that the volume is kept nearly constant. The size of the volume change is so small that it can be neglected under normal operating conditions. Applying a stronger field leads to stronger and more definite re-orientation of more and more domains in the direction of magnetic field. When all the magnetic domains have become aligned with the magnetic field the saturation point has been achieved. This paper presents the state of the art of the magnetostrictive materials and their applications such as: Reaction Mass Actuator, A standard Terfenol-D Actuator, Linear Motor Based on Terfenol-D (Worm Motor), Terfenol-D in Sonar Transducers, Terfenol-D Wireless Rotational Motor, Terfenol-D Electro-Hydraulic Actuator, Wireless Linear Micro-Motor, Magnetostrictive Film Applications, Magnetostrictive Contactless Torque Sensors and many other applications. The study shows that excellent features can be obtained by Magnetostrictive materials for many advanced applications.

Subfields: Control and Systems Engineering, Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/95f52b0d8b6595137ed09989bde4d007d2ce7ef8

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Control and Systems Engineering

1. C. Law
2. A. Pegoretti
3. Rani Elhajjar

In Electrical and Electronic Engineering

1. C. Law
2. A. Pegoretti
3. Rani Elhajjar

In Electronic, Optical and Magnetic Materials

1. C. Law
2. A. Pegoretti
3. Rani Elhajjar

Citations in the corpus

• Magnetostrictive polymer composites: Recent advances in materials, structures and properties (2018, methodology): “Stress sensing in MPC typically uses the Villari effect, which is a change in the magnetic susceptibility of a material when it is placed under mechanical stress [6,243].”