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Theoretical method for calculation of effective properties of composite materials with reconfigurable microstructure

  • We propose a theoretical approach for calculating effective electric and magnetic properties of composites, with field dependent restructuring of the filler. The theory combines the effective medium approximation, extended to a field-dependent (variable) percolation threshold, with an approximate treatment of the nonlinearity of material properties. Theoretical results are compared with experiments on magnetorheological elastomers, which in the context of investigated phenomena are often called magnetoactive elastomers (MAEs). In MAEs with soft polymer matrices, the mutual arrangement of inclusions changes in an applied magnetic field. This reorganization of the microstructure leads to unconventionally large changes of electrical and magnetic properties. The obtained theoretical results describe observed phenomena in MAEs well. For the magnetodielectric effect, qualitative agreement between theory and experiment is demonstrated. In the case of magnetic permeability, quantitative agreement is achieved. The theoretical approach presented can be useful for the development of field-controlled smart materials and design of intelligent structures on their basis, because the field dependence of physical properties can be predicted. (C) 2019 Elsevier B.V. All rights reserved.

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Metadaten
Author:Andrei A. SnarskiiORCiD, Denis Zorinets, Mikhail Shamonin (Chamonine)ORCiDGND, Viktor M. KalitaORCiD
DOI:https://doi.org/10.1016/j.physa.2019.122467
Parent Title (English):Physica A: Statistical Mechanics and its Applications
Subtitle (English):Electric and magnetic phenomena
Publisher:Elsevier
Document Type:Article
Language:English
Year of first Publication:2019
Release Date:2022/02/02
Tag:CONDUCTIVITY; EFFECTIVE RESPONSE; PERCOLATION; PERMEABILITY; magnetoactive elastomers
Volume:535
Issue:December
Article Number:122467
Institutes:Fakultät Elektro- und Informationstechnik
Fakultät Elektro- und Informationstechnik / Labor Intelligente Materialien und Strukturen
Begutachtungsstatus:peer-reviewed
research focus:Produktion und Systeme
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG