Contactless detection of bending sensitive magnetostrictive bilayers utilizing higher harmonics

Jurgen Kosel*, H. Pfützner, S. Traxler, E. Kaniusas, L. Mehnen, T. Meydan, M. Vazquez, M. Rohn, A. M. Merlo, B. Marquardt

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The study concerns a novel contactless sensor system based on a multifunctional magnetostrictive bilayer material. The permeability of the bilayer ribbons is sensitive either to bending or temperature. The higher order harmonics which are generated by the bilayer in response to a magnetic interrogation field are detected. Their amplitudes depend on the bilayer's permeability, hence on the quantity to be measured. The detection of the third harmonics proved to be most efficient. The sensor system enabled contactless measurements with a distance up to 1 m using a bilayer of only 80 mm in length and 0.1 mm in thickness.

Original languageEnglish (US)
Pages (from-to)477-483
Number of pages7
JournalInternational Journal of Applied Electromagnetics and Mechanics
Volume25
Issue number1-4
StatePublished - Jun 4 2007

Keywords

  • Contact-less
  • Magnetostriction
  • Multifunctional
  • Sensors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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