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J. Kosel, H. Pfützner, S. Traxler, E. Kaniusas, L. Mehnen, T Meydan, M Vazquez, M. Rohn, A.M. Merlo, B Marquardt:
"Contactless detection of bending sensitive magnetostrictve bilayers utilizing higher harmonics";
Poster: 12th Inter. Symp. on Interdisciplinary Electromagnetic, Mechanic & Biomedical Problems (ISEM 2005), Gastein; 09-11-2005 - 09-14-2005; in: "Interdisciplinary Electromagnetic, Mechanic & Biomedical Problems", (2005), ISBN: 3-902105-01-1; 354 - 355.

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.

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC05935903

http://publik.tuwien.ac.at/files/pub-et_10655.pdf