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TORQUE SENSING USING AMORPHOUS MAGNETOSTRICTIVE WIRES

S. Voliotis1,* , G. Christodoulou1, A. Hristoforou1

Affiliation

  1. Electrical Engineering Department, TEI of Chalkis, Psahna, Euboea 34400 Greece

Abstract

In this paper we present experimental results on the torsional dependence of amorphous magnetostrictive wires by using three different magnetic techniques in order to evaluate and compare them, namely magnetostrictive delay line, the stress-impedance and the domain wall nucleation and propagation techniques. We determined monotonic response in the stress-impedance and domain wall nucleation and propagation set-ups even in the as cast form. Concerning the magnetostrictive delay line, induced magnetic anisotropy was required to obtain monotonic response. The most sensitive response was obtained by using the delay line technique, although the power consumption was higher..

Keywords

Torque sensors, Amorphous magnetostrictive wires, MDL, Stress-impedance, Domain walls nucleation and propagation.

Submitted at: April 26, 2004
Accepted at: June 10, 2004

Citation

S. Voliotis, G. Christodoulou, A. Hristoforou, TORQUE SENSING USING AMORPHOUS MAGNETOSTRICTIVE WIRES, Journal of Optoelectronics and Advanced Materials Vol. 6, Iss. 2, pp. 671-675 (2004)