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Synthesis and characterization of low cost magnetorheological (MR) fluids - art. no. 65262R

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Title Synthesis and characterization of low cost magnetorheological (MR) fluids - art. no. 65262R
 
Creator SUKHWANI, VK
HIRANI, H
 
Subject particle-size
smart fluids
mr fluid
magnetorheology
particle distribution
guar gum
xanthan gum
pdms
low cost
 
Description Magnetorheological fluids have great potential for engineering applications due to their variable rheological behavior. These fluids find applications in dampers, brakes, shock absorbers, and engine mounts [1].However their relatively high cost (approximately US$600 per liter) limits their wide usage. Most commonly used magnetic material "Carbonyl iron" cost more than 90% of the MR fluid cost [2]. Therefore for commercial viability of these fluids there is need of alternative economical magnetic material. In the present work synthesis of MR fluid has been attempted with objective to produce low cost MR fluid with high sedimentation stability and greater yield stress. In order to reduce the cost, economical electrolytic Iron powder (US$ 10 per Kg) has been used. Iron powder of relatively larger size (300 Mesh) has been ball milled to reduce their size to few microns (I to 10 microns). Three different compositions have been prepared and compared for MR effect produced and stability. All have same base fluid (Synthetic oil) and same magnetic phase i.e. Iron particles but they have different additives. First preparation involves organic additives Polydimethylsiloxane (PDMS) and Stearic acid. Other two preparations involve use of two environmental friendly low-priced green additives guar gum (US$ 2 per Kg) and xanthan gum (US$ 12 per Kg) respectively. Magnetic properties of Iron particles have been measured by Vibrating Sample Magnetometer (VSM). Morphology of Iron particles and additives guar gum and xanthan gum has been examined by Scanning Electron Microscopy (SEM) and Particles Size Distribution (PSD) has been determined using Particle size analyzer. Microscopic images of particles, M-H plots and stability of synthesized MR fluids have been reported. The prepared low cost MR fluids showed promising performance and can be effectively used for engineering applications demanding controllability in operations.
 
Publisher SPIE-INT SOC OPTICAL ENGINEERING
 
Date 2011-10-24T03:48:52Z
2011-12-15T09:11:24Z
2011-10-24T03:48:52Z
2011-12-15T09:11:24Z
2007
 
Type Proceedings Paper
 
Identifier Behavior and Mechanics of Multifunctional and Composite Materials 2007,6526,R5262-R5262
978-0-8194-6647-1
0277-786X
http://dx.doi.org/10.1117/12.720870
http://dspace.library.iitb.ac.in/xmlui/handle/10054/15322
http://hdl.handle.net/100/2047
 
Source Conference on Behavior and Mechanics of Multifunctional and Composite Materials,San Diego, CA,MAR 19-22, 2007
 
Language English