In this work, the yield stress previously measured for some ferrofluid-based
magnetorheological fluids (FF-MRFs) with various volume fractions of nanosize magnetite
(⁠ φ⁠) and micrometer size iron particle (⁠ Φ F e⁠), for a wide range of magnetic fields (B),
is further investigated from a new point of view. The mean magnetization (MM)
approximation developed for conventional magnetorheological (MR) suspensions is
extended to FF-MRFs and a characteristic magnetic stress is defined and determined by …

In this paper we investigated from rheological point of view some samples of ferrofluid-
based magnetorheological fluids (FF-MRFs) with different volumic fractions of Fe
microparticles, but with the same ferrofluid used as carrier liquid. We correlated the
dimensionless flow curves, measured at different values of the magnetic field induction,
using either Mason number or Casson number. It has been shown that in this approach,
data sets measured under different conditions collapse on a single curve. This master curve …