MATERIAL CHARACTARIZATION FOR A TERNEOL-D BASED FORCE SENSOR

Klaus Oppermann, Bernhard Zagar

Abstract

In this paper the magneto-elastic effect is taken under further investigation, to determine the utility of the novel material Terfenol-D in force sensor applications. A measurement set-up is designed and the characteristic material parameters like magnetization diagram, butterfly diagram and the reluctance dependent on the applied mechanical load is determined. The results demonstrate that it is possible to sense both static and dynamic forces with only a single read out coil. The resultant simple arrangement of the set-up combined with the not fully utilized overload capability given by the elastic range of the sensing material Terfenol-D guarantees its robustness.

Keywords

force sensor, magneto–elastic effect, Villari effect

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IMEKO-WC-2009-TC3-404.pdf

DOI

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IMEKO TC

TC3 - Measurement of Force, Mass, Torque, and Gravity

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