Results 251 to 260 of about 220,281 (307)

MR Imaging of Body Fluid Collections

Journal of Computer Assisted Tomography, 1986
To evaluate the potential of magnetic resonance (MR) to characterize body fluids in vivo, we determined the relaxation times and the relative MR signal intensities of 42 body fluid collections in 42 patients. Twelve normal volunteers served as controls. We also studied albumin solutions at different concentrations and blood at various periods in vitro.
F, Terrier, D, Revel, H, Pajannen, M, Richardson, H, Hricak, C B, Higgins   +5 more
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TEMPERATURE DEPENDENCE OF MR FLUIDS

Electrorheological Fluids and Magnetorheological Suspensions, 2002
The rheological properties of MR fluids, MRF-132LD, are investigated under the steady shear and oscillatory shear for a range of operating temperatures from 20°C to 60°C. This was accomplished by using an advanced rheometer with the parallel-plate configuration. Under the steady shear, the Herschel–Bulkley model is used to model the rheology of the MR
W. H. LI, G. CHEN, S. H. YEO, H. DU
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A Concept of a Miniaturized MR Clutch Utilizing MR Fluid in Squeeze Mode

2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2020
This paper presents a novel design concept of a miniaturized Magneto-Rheological (MR) clutch. The design uses a set of spur gears as a means to control the torque. MR clutches with various configurations such as disk-, drum-, and armature-based have in the past been reported in the literature.
Sergey Pisetskiy, Mehrdad R. Kermani
openaire   +1 more source

Viscoelastic properties of MR fluids

Smart Materials and Structures, 1999
Mechanical properties of magnetorheological (MR) fluids are classified into pre-yield and post-yield regions according to whether the shear stress is below or above the yield stress. MR fluids within the pre-yield region exhibit viscoelastic properties; and these properties are important for understanding MR suspensions, especially for vibration ...
W H Li, G Chen, S H Yeo
openaire   +1 more source

Modeling of MR Fluids and Devices

AIP Conference Proceedings, 2008
Magnetorheological (MR) fluids and MR fluid devices have been under development at General Motors RD an analysis of the transient shear behavior of MR fluids; a model of the behavior of MR particles in a gravitational field; and a lumped parameter model of a MR clutch.
John C. Ulicny, Daniel J. Klingenberg, David Kittipoomwong, Mark A. Golden, Anthony L. Smith, Chandra S. Namuduri, Zongxuan Sun, Srinivasan M. Sivakumar, Vidyashankar Buravalla, Arun R. Srinivasa   +9 more
openaire   +1 more source

Rheometry on magnetorheological (MR) fluids

Rheologica Acta, 1996
Test fixtures of a commercial concentric cylinder rheometer (Physica Rheolab MC 20) were modified to enable measurements under magnetic inductions up to 0.5 Tesla in a shear rate range of 0.1 up to 1000 s −1 and temperatures 0° to 150°C. In the 2 x90°-cups only two 90° sectors of the stationary part of the double concentric cylinder arrangement are ...
H. Martin Laun, Claudius Kormann, Norbert Willenbacher   +2 more
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WHAT MAKES A GOOD MR FLUID?

Electrorheological Fluids and Magnetorheological Suspensions, 2002
Experience in manufacturing magnetorheological (MR) fluids for commercial application has shown that some of the greatest barriers to commercial success are not factors or conditions normally considered in the laboratory. The present paper looks at conditions found in MR fluid devices operating in real-world applications where ...
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Constitutive equation of MR fluids

Journal of Central South University of Technology, 2007
Magnetorheological(MR) fluids are intelligent materials whose mechanical properties will change with the magnetic field strength. Based on this behavior, the MR fluids can be used in wide practice fields. The constitutive equation is the most important problem of research of MR fluids.
Yan Yang, Shi-guo Huang, Bo-seon Kang
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Models and Modes in MR Fluids

2016
To design magnetorheological devices and to understand how they work, one should first know the relationship between the sheer stress and sheer rate in the magnetorheological fluid [1].
Abdollah Hajalilou, Saiful Amri Mazlan, Hossein Lavvafi, Kamyar Shameli   +3 more
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A Review of the State of the Art in Magnetorheological Fluid Technologies - Part I: MR fluid and MR fluid models

The Shock and Vibration Digest, 2006
This paper presents a review of the state of the art in magnetorheological technology. As magnetorheological fluids continue to gain attention, the research and development of these fluids must keep pace. Since their invention in 1948, MR fluid development has made significant advancements.
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