Synthesis and Characterization of Antifriction Magnetorheological Fluids for Brake

Sarkar, Chiranjit; Hirani, Harish

doi:10.14429/dsj.63.2633

Cited by 35 publications

(23 citation statements)

References 15 publications

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“…They are mainly used to reduce sedimentation, prevent agglomeration, enhance lubricity, prevent oxidation, modify viscosity and inhibit wear. The various additives in use include Aerosil 200, oleic acid, tetramethylammonium hydroxide solution 16 , lecithin, Tween-80, Span-80 (ref. 17), etc.…”

Section: Ingredients Of Mr Fluidsmentioning

confidence: 99%

Developments in Vibration Control of Structures and Structural Components with Magnetorheological Fluids

Raju¹,

Varma²

2017

Current Science

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Vibration isolation and control of structures subjected to different types of dynamic loads due to periodic forces, impact and shock type forces and earthquake forces is an important area in structural engineering. The structures can be machine foundations, buildings, bridges, towers, automobiles, ship structures, military tanks and aeronautical structures. Some of these devices used are elastic springs, viscoelastic dampers, viscous fluid dampers, magnetorheological dampers and friction dampers. This article gives latest developments in vibration control of structures and structural components using magnetorheological fluids. The current status of technology and further research requirements to be studied in these areas are highlighted.Keywords: Automobile brakes, magnetorheological fluids, structure and structural components, suspension systems, vibration control.IMPROVEMENT in manufacturing technology has provided machines of higher ratings, longer bridges, taller buildings which requires to satisfy the static, dynamic capacity and serviceability and stability limits for members/ systems prescribed by codes of practice. These machines/ structures give rise to considerable higher dynamic forces and thereby higher stresses. This demands development of advanced control and safety systems to keep the structural members/systems static and dynamic responses within tolerable levels. The performance, safety and stability of structures supporting the machines/structures depend largely on their design of suspension systems and their interaction with the environment. In this article, current status of technology in development of magnetorheological and friction dampers and their use in vibration control of structural and structural components in different fields of engineering applications are presented.

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Section: Ingredients Of Mr Fluidsmentioning

confidence: 99%

Developments in Vibration Control of Structures and Structural Components with Magnetorheological Fluids

Raju¹,

Varma²

2017

Current Science

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“…Moreover, among the additives used, xanthan-gum-based sample has exhibited greater stability against sedimentation (Sukhwani and Hirani, 2007). Sarkar and Hirani (2013) observed that the yield strength of synthesized MR fluid increases by incorporation of oleic acid and tetramethylammonium hydroxide. Grease is added as the additive or stabilizer in the preparation of MR fluid and the effect of volume concentration of grease on the sedimentation rate of iron particles in the MR fluid has been investigated.…”

Section: Introductionmentioning

confidence: 97%

Rheological Characterization and Performance Evaluation of Magnetorheological Finishing Fluid

Kumar¹,

Kumar²,

Kumar³

2020

JAFM

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The novel controllable behaviour of magnetorheological (MR) fluid is the backbone of magnetorheological fluid-based finishing processes. MR fluid-based finishing processes facilitate better control over finishing forces as the stiffness of MR finishing fluid used in these processes can be controlled in accordance with the applied magnetic field and MR finishing fluid composition. Therefore, a detailed experimental investigation was carried out to find the effect of MR finishing fluid constituents on its yield stress through the Taguchi Design of Experiments. Rheological data obtained from a magneto-rheometer (MCR-102) was characterised by using Bingham plastic, Herschel-Bulkley and Casson's fluid constitutive modelling. The coefficient of regression (R 2) values of Herschel-Bulkley model were found to be best suited for all compositions of MR finishing fluid. Analysis of variance (ANOVA) has been used to find the contribution of selected parameters for improving the response characteristics. The optimized fluid has been then used for the finishing of biocompatible stainless steel AISI 316L, and the finishing results show that the average surface roughness value decreases down to 58 nm.

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“…This fluid transforms from the liquid state to solid state under the application of the magnetic field and vice versa on the removal of the magnetic field [3]. This change in the state of the fluid with respect to the magnetic field is based on the phenomenon of the change in the viscosity of the fluid.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Viscosity Analysis of Magneto-Rheological Fluid

Barara¹,

Srivastava²,

Dutta³

et al. 2017

IJERT

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Abstract-The Magneto-rheological fluid is a smart fluid which changes its mechanical characteristics with varying magnetic fields. This principle of Magneto-rheological fluid is used in the human prosthesis, automotive shock absorbers, cockpit seats of military and commercial aviation etc. The purpose of this research is to synthesize an MR fluid using silicone oil as the constituent carrier fluid with other additives and to determine the coefficient of viscosity at varying magnetic field using Poiseuille's equation which is an indirect method of viscosity determination. The relationship curve between the viscosity of the synthesized fluid and the magnetic field over the varying range is plotted using the obtained results.

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Synthesis and Characterization of Antifriction Magnetorheological Fluids for Brake

Cited by 35 publications

References 15 publications

Developments in Vibration Control of Structures and Structural Components with Magnetorheological Fluids

Developments in Vibration Control of Structures and Structural Components with Magnetorheological Fluids

Rheological Characterization and Performance Evaluation of Magnetorheological Finishing Fluid

Synthesis and Viscosity Analysis of Magneto-Rheological Fluid

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