Magnetorheology of fiber suspensions. I. Experimental

摘要: This work reports a detailed study on the shear magnetorheology of suspensions magnetic microfibers. The steady-state regime was investigated using controlled-stress rheometer for different concentrations particles and under presence broad range applied fields (up to 512kAm−1). results were compared with those obtained conventional magnetorheological fluids (suspensions microspheres). It found that fibers show an enhanced effect. We proposed existence field-dependent solid friction between as main physical reason this enhancement. In order ascertain relevance interfiber friction, microscopic structure fiber optical microscope. absence field, form entangled network approximately isotropic orientation. Upon field application, becomes deformed alig...