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Showing 1 to 11 of 11 for “"Magnetorheological fluids"”.
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The behaviour of magnetorheological fluids in squeeze mode
Magnetorheological (MR) fluids possess rheological properties, which can be changed in a controlled way. These rheological changes are reversible and dependent on the strength of an excitation magnetic field. MR fluids have potentially beneficial applications when placed in various applied loading …
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Magnetorheological fluids for extreme environments : stronger, lighter, hotter
The controllable properties of magnetorheological (MR) fluids offer reliable and efficient actuation means to a number of far-ranging engineering applications. In this thesis we are motivated by the applications of MR fluids in oil & gas exploration and production. These applications also bring …
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Design and optimization of micropumps using electrorheological and magnetorheological fluids
… we propose to employ electrorheological (ER) and magnetorheological (MR) fluids as the hydraulic fluids. This thesis presents two methods: one is a dynamic sealing method to be applied on current micro-scale gear pumps using MR fluids, and the other is a novel design method of micropumps using ER …
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A study of a piezoelectric energy harvesting system using magnetorheological fluids
… energy harvesting system using a thin layer of magnetorheological fluid as a soft impact mechanism to enhance the frequency of the energy generator. Currently, the major bottleneck of vibration energy harvesting is the dynamic nature of vibrations in the environment which necessitates that …
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Characterizing the Behavior of Magnetorheological Fluids at High Velocities and High Shear Rates
Magnetorheological (MR) fluids offer solutions to many engineering challenges. The success of MR fluid is apparent in many disciplines, ranging from the automotive and civil engineering communities to the biomedical engineering community. This well documented success of MR fluids continues to …
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Development, characterization and applications of magnetorheological fluid based "smart" materials on the macro-to-micro scale
Magnetorheological fluids belong to the class of field-responsive fluids that undergo large, reversible and fast changes in their rheological properties when acted upon by an external magnetic field. 'Smart' or controllable composite materials have been obtained by doping polymers, foams, fabrics …
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Magnetic fluid flow phenomena in DC and rotating magnetic fields
… a study of magnetic field induced torques in magnetorheological fluids, a characterization and quantitative measurement of properties relating to the transition of a ferrofluid drop from a continuous phase into a discrete phase and also into a spiral flow, and a study of magnetic field induced …
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In-Depth Study of Different Magnetorheological Fluid Properties Under Different Operating Parameters, and in Presence of Organic Additives
… on the application of a magnetic field makes magnetorheological fluids (MRFs) a valuable material for various damping systems. As MRFs form chains, MRFs transit from a liquid state to a solid-like state exhibiting an increase in viscosity. Since MRF discovery, commercialization, and …
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Designing Particle Tracking Software for a Theoretical Understanding of Magnetic Janus Particle Aggregation
… particle behavior and bulk properties of the magnetorheological fluids that they make up. The software used to extract the assembly-determining parameters from the system has broad applicability for studying the physical properties of other non-reversible, discrete assembly processes, such as …
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Combined Shock and Vibration Isolation Through the Self-Powered, Semi-Active Control of a Magnetorheological Damper in Parallel with an Air Spring
… of an air spring in parallel with a controlled magnetorheological fluid damper. The benefits of combining shock and vibration isolation into a single package is discussed. Modeling and control issues are investigated and test and simulation results are discussed. It is shown that this hybrid …
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Controlling the structure and dynamics of magnetoresponsive particle suspensions for enhanced transport phenomena
… combinations of various particles, suspending fluids, and magnetic fields, a vast array of behavior is possible: the formation of anisotropic particle structures for directed heat transport for use as advanced thermal interface materials; the stimulation of emergent dynamics in platelet …