Physical properties and damping characteristics of MR fluids in low magnetic fields

Tadamasa Oyama, Toyohisa Fujita, Hideya Nishiyama

Research output: Contribution to journalArticlepeer-review


Magnetic fluid and MR fluids are representative functional fluids because their properties and characteristics can be controlled easily by applying a magnetic field. Especially, MR fluids has controllable high viscosity, high sensitivity, controllable large yield stress and strong magnetic force in the applied magnetic field due to the robust cluster formation compared with those of magnetic fluid. In the present study, two kinds of nano-MR fluids dispersed iron particle with different diameters are prepared. Vizualization of cluster formation of particles and measurements of physical properties are conducted in the low applied magnetic fields. Finally, damping characteristics of an oscillating flat plate immersed in MR fluids under the low applied magnetic fields are compared with those of magnetic fluid.

Original languageEnglish
Pages (from-to)1372-1376
Number of pages5
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Issue number646
Publication statusPublished - 2000 Jun


  • Cluster
  • Drag force
  • Functional fluids
  • Low magnetic field
  • MR fluids
  • Magnetic fluid
  • Viscosity
  • Viscous damping coefficient

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering


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