Preparation of magnetorheological elastomers and their slip-free characterization by means of parallel-plate rotational rheometry

Journal article
(Original article)


Publication Details

Author(s): Walter B, Pelteret JP, Kaschta J, Schubert DW, Steinmann P
Journal: Smart Materials and Structures
Publication year: 2017
Volume: 26
ISSN: 1361-665X
Language: English


Abstract


A systematic study is presented to highlight a methodology of sample preparation and subsequent slip-free characterization of magnetorheological (MR) elastomers in parallel-plate rotational rheometry. Focusing on the magnetic field-dependent nonlinear viscoelastic behavior an array of oscillatory strain sweep measurements is conducted with samples cured within the rheometer.



The examined nonlinear material response (i.e. the amplitude dependence of the storage and loss moduli) as a function of the applied magnetic field is found to be qualitatively similar to the amplitude dependence of particle reinforced elastomers (i.e. the Payne effect). Therefore, the experimental data (both moduli) is decomposed similar to that for reinforced elastomers and a phenomenological model is formulated for both the storage and loss modulus to account for the physical mechanisms governing the nonlinear material characteristics.



Parameter identification suggests that the material response at low magnetic fields is dominated by the polymeric network whereas the strong magneto-reinforced microstructure governs the linear and nonlinear viscoelastic behavior at high magnetic fields. The overall experimental outcome further suggests that the underlying concept of the phenomenological model for particle reinforced elastomers (i.e. destruction and reformation of the filler network) can be transfered to magnetorheological materials. Consequently, the proposed phenomenological model can be applied to quantify and further analyze the nonlinear response characteristics of MR elastomers (i.e. the amplitude dependence of the storage and loss modulus as a function of the applied magnetic field) that is closely linked to microstructural changes of the magnetizable particle network.



FAU Authors / FAU Editors

Kaschta, Joachim Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Polymerwerkstoffe)
Pelteret, Jean-Paul
Lehrstuhl für Technische Mechanik
Schubert, Dirk W. Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Polymerwerkstoffe)
Steinmann, Paul Prof. Dr.-Ing.
Lehrstuhl für Technische Mechanik
Walter, Bastian
Lehrstuhl für Technische Mechanik


How to cite

APA:
Walter, B., Pelteret, J.-P., Kaschta, J., Schubert, D.W., & Steinmann, P. (2017). Preparation of magnetorheological elastomers and their slip-free characterization by means of parallel-plate rotational rheometry. Smart Materials and Structures, 26. https://dx.doi.org/10.1088/1361-665X/aa6b63

MLA:
Walter, Bastian, et al. "Preparation of magnetorheological elastomers and their slip-free characterization by means of parallel-plate rotational rheometry." Smart Materials and Structures 26 (2017).

BibTeX: 

Last updated on 2018-11-08 at 02:45