Project Details
Projekt
Experimental study of magnetic field driven properties of magnetic hybrid materials with complex internal interactions
Applicant
Dr. Dmitry Borin
Subject Area
Fluid Mechanics
Term
from 2015 to 2018
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 276456806
Classical magnetic hybrid materials contain either magnetically soft or magnetically hard particles. Thus, they show either an active magnetorheological effect or exhibit passive magnetorheological properties after magnetization of the magnetically hard particles. Within the research association a mixture of magnetically hard and soft particles in an elastomeric matrix is expected to provide a combination of active and passive magnetorheological properties. In this context, it will be the central goal of the research association to synthesize tailored magnetic hybrid materials for sensor applications based on a detailed microscopic understanding of the material properties. Within the subproject described here a systematic experimental study of magnetic field driven properties of magnetic hybrid materials will be performed. Classical elastic magnetic hybrid materials as well as novel materials with a complex composition will be in focus of the working program. Experiments on mechanical loading using diverse methods and instrumentation will be combined with investigations of the static magnetic properties. The obtained data will serve as a reference for the simulation of the material properties and will provide the basis for theoretical predictions as well as for the design of sensors using the new kind of magnetic hybrid materials.We will evaluate and characterize the influence of the powder composition, morphology and concentration on the cross-linking process as well as on the resulting macroscopic behavior of the composites. Furthermore, we will improve the existing experimental techniques and methods for magnetomechanical characterization of magnetic hybrid materials. Therefore, experiments will be conducted using various types of instrumentation, including some that have never been used for this class of materials before. A combination of various experimental methods is intended to provide exact and accurate information on the magnetic field induced viscoelastic properties of the new magnetic hybrid materials. In addition to the characterization of the novel composite with complex composition and testing of new experimental methods, measurements on conventional samples will contribute to the understanding of such materials, which is still not comprehensive or without ambiguities. A correct interpretation of the data will be done using microstructural characterization and theoretical analysis, which will be provided by other working groups, and finally this generalized information will contribute to a prediction of certain material properties, which can be achieved by respective changes in composition of the material.
DFG Programme
Research Grants
International Connection
Russia
Partner Organisation
Russian Foundation for Basic Research
