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A mechanical characterisation on multiple timescales of electroconductive magnetorheological elastomers

  • Magnetorheological elastomers are a type of smart hybrid material which combines elastic properties of a soft elastomer matrix with magnetic properties of magnetic micro particles. This leads to a material with magnetically controllable mechanical properties of which the magnetorheological effect is the best known. The addition of electroconductive particles to the polymer mix adds electrical properties to the material behaviour. The resulting electrical resistance of the sample can be manipulated by external magnetic fields and mechanical loads. This results in a distinct interplay of mechanical, electrical and magnetic effects with a highly complex time behaviour. In this paper a mechanical characterisation on multiple time scales was conducted to get an insight on the short and long-term electrical and mechanical behaviour of this novel material. The results show a complex resistivity behaviour on several timescales, sensitive to magnetic fields and strain velocity. The observed material exhibits fatigue and relaxation behaviour, whereas the magnetorheological effect appears not to interfere with the piezoresistive properties.

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Metadaten
Author:Malte Schümann, J. Morich, T. Kaufhold, Valter BöhmGND, Klaus Zimmermann, Stefan Odenbach
DOI:https://doi.org/10.1016/j.jmmm.2018.01.029
Parent Title (English):Magnetism and Magnetic Materials
Publisher:Elsevier
Document Type:Article
Language:English
Year of first Publication:2018
Release Date:2022/04/05
Volume:453
Issue:May
First Page:198
Last Page:205
Institutes:Fakultät Maschinenbau
Fakultät Maschinenbau / Labor Finite-Elemente-Methode (FEM)
Begutachtungsstatus:peer-reviewed
Publication:Externe Publikationen
research focus:Energie und Mobilität
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG