Korea-Australia Rheology Journal, Vol.19, No.3, 117-123, November, 2007
Behaviour of field-responsive suspensions under oscillatory shear flow
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There has been considerable interest in recent years in field-responsive suspensions, which are of some importance in industry in many different applications. The microstructure of these materials is a significant issue which can be probed by rheological measurements. In this study, measurements were made of a magnetorheological fluid (MRF) under steady and oscillatory shear flow, with and without a magnetic field. Mathematical inversion was used to derive the relaxation time spectrum of the MRF from oscillatory shear data. Experimental evidence is presented of the gel-like properties of this MRF.
Keywords:Magnetorheological fluid;field-responsive suspension;microstructure;cross-linking;oscillatory shear flow;mathematical inversion;non-linear regularization
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