HREL Department of Mechanical Engineering
Composite and Intelligent Materials Laboratory
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Magnetorheological Fluid

A magnetorheological fluid (MRF) is a material that can change its rheological properties, such as effective viscosity, in the presence of a magnetic field in milliseconds, and return to its original state once the magnetic field is removed.   We have conducted fundamental theoretical and experimental studies on MRF:

  • Flow through microchannels
  • Flow on various surface roughnesses
  • Incompressible and compressible forms of the fluid
  • Sealing of at high pressures and high temperatures
  • Encapsulated in a flexible medium (MRF-E)
  • Dampers for:  bicycles, motorcycles, cars, buses, HMMWVs, bridges and buildings
  • Two-way dampers
  • Controllable clutches
     

Magnetorheological Elastomer

A magnetorheological elastomer (MRE) is a material that its material properties, such as stiffness, changes in the presence of a magnetic field in milliseconds, and return to its original state once the magnetic field is removed.  We have conducted fundamental theoretical and experimental studies on:

  • Thick MRE’s behavior
  • Thick MRE's dynamic performance
  • MRE-base isolation devices
  • MREs as Sensors and actuators

Forward Closure System

The forward closure system is a closure for use in underwater vehicles.   We have performed studies on:

  • Reusable closure for submarine missile launches
  • Small and large-scale prototypes
 
Designed by M. Behrooz.