Abstract
The most common used parameters in applications of magnetorheological elastomers are characteristic data of magnetization curve. Vibrating sample magnetometer (VSM) is a unique technique to record the magnetization curve of small samples. From measurement data the further calculations have to be done for determination of the saturation magnetisation as among other factors some materials can not be saturated with this VSM, but the saturation magnetization can be determine as the fitted curve´s parameter. It was found, that the saturation magnetisation depends on filling factor (as rate of components). To get composite saturation magnetisation components saturation magnetisation in proportion of their weight percentage should summing-up. The knowledge of error limits presents a usable tool for further examination.
Highlights
Magnetorheological elastomers (MREs) form a subgroup within those materials which are capable of changing both their mechanical properties and their geometry under the influence of the external magnetic field
From measurement data the further calculations have to be done for determination of the saturation magnetisation as among other factors some materials can not be saturated with this vibrating sample magnetometer (VSM)
6 Conclusion Our data suggest that saturation magnetisation primary depends on filling factor
Summary
Magnetorheological elastomers (MREs) form a subgroup within those materials which are capable of changing both their mechanical properties and their geometry under the influence of the external magnetic field. The characteristics of magnetization curve is crucial in the application of MREs. Main field of the application of magnetorheological elastomers is actuator technics. The commonly used parameters in the application are associated with the details of the shape of the magnetization curves. In order to determine the saturation magnetisation we applied vibrating sample magnetometer (VSM) technique in poly(dimethyl-siloxane) matrix based hyperelastic composites. On the bases of experimental data an approximate relation between the saturation magnetisation of two component composites and saturation magnetisation of components and composite filling factors will be suggested
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