Analysis of Rheological Properties of MR Fluid Based on Variation in Concentration of Iron Particles

Kamble, Vikram G.; Kolekar, Shreedhar

doi:10.3844/ajnsp.2014.12.16

Cited by 7 publications

(3 citation statements)

References 14 publications

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“…The shear action on the work-part surface with MRP fluid helps to clip off the roughness crests in the form of micro-chips. 18,19 To understand the material removal mechanism, the in-depth study of the forces imposed on the active abrasives is studied. The iron particles organized themselves in the chains due to the influence of the magnetic field.…”

Section: Rotary Rectangular Tool Core-based Magnetorheological Finishmentioning

confidence: 99%

Theoretical investigations into magnetorheological finishing of external cylindrical surfaces for improved performance

Singh

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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Fine finishing entails increased percentage contact area, less friction, and less wear. The magnetorheological finishing is a precision process to obtain the fine finishing on the workpiece surface for improved functional applications. So, the rotary rectangular core-based magnetorheological finishing process is utilized for the precise finishing of the cylindrical external surfaces. The rotary-rectangular shaped tool core tip surface provides the uniformly magnetic flux concentration that further benefit to offer the uniform fine finishing on the cylindrical work-part's external surface. In this work, a theoretical model is developed to predict the reduction in the surface asperities during the magnetorheological finishing of the external cylindrical surfaces. The rotational speed of the rectangular tool core on the rotating cylindrical work-part enhances the relative speed of active abrasives, which decreases the pitch, helix angle, and increases the helical path length. These results enhance the uniform precise finishing on the cylindrical work-parts and also enhances the process performance. For validation of the theoretical roughness model, the experiments have been performed on the cylindrical external surface of the H13 die steel workpiece. The percentage error between the experimentally obtained Ra value and theoretical Ra value is found to be −4.76% to 3.06%, which shows the good agreement between the theoretical model and experimental results. It also shows the practicality and accuracy of the present process while finishing the H13 die steel and it is useful for many industrial applications.

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Section: Rotary Rectangular Tool Core-based Magnetorheological Finishmentioning

confidence: 99%

Theoretical investigations into magnetorheological finishing of external cylindrical surfaces for improved performance

Singh

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Shah et al [37] reported that large particles provide 15 times higher yield stress than small-sized particles. Furthermore, it has been reported that on mixing smaller and larger particles with different weight fractions, the Bingham yield stress value increases by a factor of three compared with large-sized particles dispersed in fluid [38,39]. The finding implies the mechanical properties of MR fluids are the function of temperature; the steps involved in bringing down the off-state viscosity and shear stress at elevated temperatures were studied, as was the performance degradation for a low-high-low temperature cycle [40].…”

Section: Synthesis Of Mr Fluidsmentioning

confidence: 99%

Design, fabrication and testing of a magnetorheologic fluid braking system for machine tool application

Jinaga

Thimmaiah

Kolekar³

et al. 2019

SN Appl. Sci.

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This technical article introduces a governable brake system that can be relevant for different machines, developed using magnetorheologic (MR) fluids. As an initial step, new MR fluids are developed considering different compositions of various constituents pursued by the formulation of a numerical model considering various elements such as magnetic field strength, magnetic particle size and MR fluid yield strength. Using a commercial software, COMSOL, a magnetically energized circuit is examined to obtain the details regarding the number of turns, current supply and strength of the magnetic field at predefined points, and a simulation study is carried out. Successively, the developed and optimized MR fluid is introduced between the gap of the fixed plate and rotating disk under the influence of the magnetic field over the fluid territory. A full-fledged test rig setup for the MR brake system is established, and an experimental study is carried out focusing on the shaft speed and braking torque developed during the braking process. The results are also plotted for various current input values. The current input value ranges from 0 to 2 amp, and the respective torque value is obtained. Likewise, the performance of the torque by the proposed MR brake system used simulated results in a derived theoretical model, and a comparative study is carried out with the experimented results.

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“…A major advantage of a coating of polycyclophenazene is that it would help to reduce the tendency of the magnetic nanoparticles to aggregate together. The potential of such nanoparticles is an active area of research (Zhang et al, 2015;Kamble and Kolckar, 2014). …”

Section: In Vivo Applicationsmentioning

confidence: 99%

New Opportunities for Fullerenes and for Graphene

Delmonte¹

2015

American Journal of Nanotechnology

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This is a conjecture which defines a new class of electrically conducting polymer that chemically confines metals, ions or clusters within an electric potential constraining them to react in ways novel to chemistry. The polymers are planar on a planar surface and adhere as a ∏-bonded electron sheet to planar, electron-delocalized surfaces as in Fullerenes, graphene (both sides) and graphite. The new polymers offer an extension of the properties of solid state Physics into catalytic Chemistry. With the empirical formula typically C 6 X 3 where X is mostly chosen from Groups 3A [B, Ga, In] Table, or a mixture of these, the molecules can form the polymer in Figure 1. Typically X = N, P, As, Sb, O, S, Se and Te. With an electric potential applied by the researcher to the polymer in Figure 3, this amounts to the creation of a new chemistry for each of the ions, clusters and neutral compounds of some 60 elements. Basically, this wide range of new complexes offers scientists access to fresh chemical opportunities when coated onto Fullerenes, graphene and graphite to force reactions not observed before and to explore both their chemical, medical and industrial implications.

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Analysis of Rheological Properties of MR Fluid Based on Variation in Concentration of Iron Particles

Cited by 7 publications

References 14 publications

Theoretical investigations into magnetorheological finishing of external cylindrical surfaces for improved performance

Theoretical investigations into magnetorheological finishing of external cylindrical surfaces for improved performance

Design, fabrication and testing of a magnetorheologic fluid braking system for machine tool application

New Opportunities for Fullerenes and for Graphene

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