Article
Materials Science, Multidisciplinary
Chander Prakash, Sunpreet Singh, Alokesh Pramanik, Animesk Basak, Grzegorz Krolczyk, Marta Bogdan-Chudy, Yongling Linda Wu, H. Y. Zheng
Summary: The study investigates the effect of magnetorheological fluid assisted magnetic abrasive finishing (MRAF) process on the surface topography of high strength biomedical grade I3-phase Ti-Nb-Ta-Zr alloy. The study analyzed the impact of MRAF processing parameters on surface characteristics and found that the I3-TNTZ alloy exhibited excellent biomechanical properties. The optimal conditions for achieving the lowest surface roughness and highest material removal rate were identified for the raster path finishing strategy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Engineering, Mechanical
Shanshan Li, Shichao Xiu, Wanli Song, Cong Sung, Heng Yang
Summary: This paper studies the influence of magnetorheological fluid (MRF) on the wear mechanism of sealing pairs under different surface roughness through theoretical analysis and experimental verification. The simulation analysis reveals that the coupling of roughness and microparticles changes the contact pressure and frictional stress distribution on the O-ring. The wear morphologies and analysis indicate that roughness affects the movement pattern of particles in the sealing gap, thereby determining the tribodynamic behavior of MRF. The study points out that the sealing wear under MRF is completely opposite to that of base oil.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Optics
Mahender Kumar Gupta, D. Dinakar, Inder Mohan Chhabra, Sunil Jha, Buchi Suresh Madireddy
Summary: This paper introduces a non-conventional polishing technique for fused silica glass, achieving angstrom level surface finishing using the Ball End Magneto rheological finishing method (BEMRF). This method minimizes subsurface damage and improves the surface roughness and material removal of fused silica glass, allowing for highly polished and precise optics fabrication.
Article
Engineering, Mechanical
Sunil K. Paswan, Anant K. Singh
Summary: The particles in the magnetorheological polishing fluid play a crucial role in the MR finishing processes, particularly in the newly developed R-MRH process. Utilizing the motion of these particles in the R-MRH process can significantly improve the surface finishing efficiency and quality.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2021)
Article
Acoustics
Yahya Choopani, Mohammad Reza Razfar, Mohsen Khajehzadeh, Mohammadreza Khosrojerdi
Summary: This study proposes the ultrasonic assisted-rotational magnetorheological abrasive flow finishing (UA-RMRAFF) process as a solution to the challenges of the rotational-magnetorheological abrasive flow finishing (R-MRAFF) process. Experimental results show that the UA-RMRAFF process provides a uniform and fine surface finish, increases material removal, and performs surface modification faster than the R-MRAFF process.
Article
Engineering, Chemical
H. Khajehsaeid, N. Alaghehband, P. K. Bavil
Summary: Magnetorheological fluids (MRFs) are functional materials that exhibit magneto-mechanical coupling, transitioning from free-flowing to semi-solid state under a magnetic field. The yield stress, dependent on magnetic field intensity and particle volume fraction, is crucial for MR device design. Experimental and theoretical investigations have shown that an empirical model can accurately describe the yield stress of MRFs, considering different particle concentrations. A modified magnetic dipole model with an exponential distribution function shows promising results for capturing particle chain arrangements in MRFs under a magnetic field.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Engineering, Manufacturing
Vikas Kumar, Rajesh Kumar, Harmesh Kumar
Summary: A novel form of magnetorheological abrasive finishing (MRAF) system has been designed to nano-finish the exterior cylindrical surfaces of various diameters. The optimal combination of finishing parameters has been determined using statistical analysis to achieve high-quality surfaces, demonstrating the superior capabilities of the developed MRAF process.
MATERIALS AND MANUFACTURING PROCESSES
(2023)
Article
Engineering, Multidisciplinary
Jiaye Xu, Yanhua Zou
Summary: A new MAF process with renewable abrasive particles using compound magnetic finishing fluid circulatory system was proposed to improve the finishing efficiency. The experimental results showed that stable processing of material surface without interruption can be achieved through this process, improving the surface roughness of the sus304 stainless steel plate significantly.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2021)
Article
Automation & Control Systems
Duytrinh Nguyen, Jinzhong Wu, Nguyen Minh Quang, Le Anh Duc, Phung Xuan Son
Summary: The study investigated the factors affecting the polishing process of magnetic materials using Ni-P-coated SKD11 steel, focusing on the force distribution of carbonyl iron (CIPs) and abrasive particles (APs) in the working surface of magnetorheological fluid (MRF). Results indicated that the diameters of APs had the most significant impact on the polishing effect, while the diameter of CIPs had insignificant influence. Commercially available CIPs were effectively applied for achieving extremely high accuracy in polishing magnetic materials without leaving any scratches on the surface.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Automation & Control Systems
Abbas Moghanizadeh, Fakhreddin Ashrafizadeh, Maziyar Bazmara
Summary: The novel approach of magnetic abrasive finishing enhances the potential for creating different finishing patterns on free-form surfaces without using special fixtures or tool machines. By utilizing a transmission magnetic field, the method allows the creation of various surface roughness patterns simultaneously in different directions. The experiments reveal a direct relationship between changes in surface roughness and electric current and process time.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Multidisciplinary
Gourhari Ghosh, Ajay Sidpara, P. P. Bandyopadhyay
Summary: Thermally sprayed tungsten carbide coating is widely used for wear resistance applications. In this study, magnetorheological fluid based finishing (MRF) process with diamond powder abrasive particles is used to achieve a nanolevel surface finish on pre-polished tungsten carbide coating. The incorporation of a chemical etchant in MRF results in a higher finishing rate. However, the MRF technique's effectiveness is limited at higher wheel velocities. To overcome this, CIPdiamond and CIP-diamond-graphene composite abrasives are introduced, which show higher material removal rates and better stability at elevated wheel speeds. The MRF process with CIPdiamond-graphene abrasives achieves the lowest surface roughness (Sa) of 55 nm and highest MRR.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Rebecca Pierce, Young-Tai Choi, Norman M. Wereley
Summary: This study evaluated mesocarbon microbeads (MCMBs) as alternative passive particles to enhance MR yield force, showing greater durability and non-linear increase in yield force in flow mode; Theoretical analysis illustrated a potential mechanism for the yield force augmentation effect.
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
(2022)
Article
Nanoscience & Nanotechnology
Andy T. Clark, David Marchfield, Zheng Cao, Tong Dang, Nan Tang, Dustin Gilbert, Elise A. Corbin, Kristen S. Buchanan, Xuemei M. Cheng
Summary: This study systematically investigates the effect of polymer stiffness on magnetization reversal of ultrasoft magnetorheological elastomers (MREs). The results show that the magnetic hysteresis loops of MREs exhibit characteristic shapes that vary with increasing polymer stiffness.
Article
Automation & Control Systems
Zhe Lv, Rongguo Hou, Guoyong Zhao
Summary: The use of magnetorheological (MR) fluid can prevent the instability and spreading out of jet flow outside the focusing tube in abrasive waterjet machining, while an external axial magnetic field can improve erosion footprint and processing performance. Results from experiments on alumina validate the effectiveness of applying magnetic field to enhance jet flow concentration and restrain velocity attenuation.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Nitesh Kumar Dubey, Ajay Sidpara, Rajaram Lakkaraju
Summary: Magnetorheological fluid-based finishing is a recognized technique for precise finishing of components, with material removal depending on MR fluid ribbon's velocity and compression during interaction with the workpiece. This article investigates the ejection of magnetic and abrasive particles during carrier wheel rotation by balancing centrifugal and magnetic forces. Experimental results demonstrate reduction in MR fluid ribbon thickness and surface roughness initially decreases and then increases with increasing carrier wheel speed. The theoretical and actual departure speed of magnetic particles from the MR fluid ribbon show good agreement.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2023)
Article
Instruments & Instrumentation
Nitesh Kumar Dubey, Ajay Sidpara
Summary: The study investigates the influence function of magnetorheological finishing process through numerical simulation and experiments, analyzing the relationship between dynamic pressure, wall shear stress, and the workpiece surface. The correlation between depth of indentation and influence function is examined, with the understanding that spindle speed and working gap size affect both parameters.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Engineering, Industrial
Gourhari Ghosh, Ajay Sidpara, P. P. Bandyopadhyay
Summary: In this study, a wheel-based magnetorheological finishing process was used to achieve nanolevel surface roughness on oxygen-free high conductivity copper. By adjusting the process parameters, it was found that a lower residual stress and minimal surface roughness could be attained by using a higher working gap, lower wheel speed, and feed rate.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2021)
Article
Engineering, Mechanical
Gourhari Ghosh, Ajay Sidpara, P. P. Bandyopadhyay
Summary: The study focuses on MRF of WC-Co coating using B4C abrasives, and improves the processing efficiency by fabricating composite abrasives, achieving higher MRR and lower surface roughness.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Engineering, Mechanical
Jagannath Verma, Leeladhar Nagdeve, Harish Kumar
Summary: This research examines the interaction between aluminum alloy and EN-31 steel under dry sliding conditions at different temperatures, and finds that the wear volume loss is lower in a steel disc compared to the aluminum alloy pin at room temperature.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Gourhari Ghosh, Ajay Sidpara, P. P. Bandyopadhyay
Summary: The effects of tool compression, backing pad hardness, and abrasive particle size of the polishing pads on the normal force, material removal rate and surface roughness of tungsten carbide-cobalt coating are investigated. Increasing tool compression results in higher material removal rate and lower surface roughness, while using a harder tool produces deeper finishing grooves and increases surface roughness.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2021)
Article
Engineering, Multidisciplinary
Meena Pant, Leeladhar Nagdeve, Harish Kumar, Girija Moona
Summary: Metal Additive Manufacturing is a transformative technique that allows for the production of complex and customized products in a small scale. It has played a significant role in reconstructing the global production and logistics parts system. However, it is limited by issues such as low productivity and quality problems.
SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES
(2022)
Article
Engineering, Manufacturing
Mayank Kumar, Ajay M. Sidpara, Vikranth Racherla
Summary: In this study, open-cell porous flexible abrasive tools were developed for super finishing of copper disks, achieving a good surface finish.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2023)
Article
Engineering, Multidisciplinary
Gourhari Ghosh, Ajay Sidpara, P. P. Bandyopadhyay
Summary: Thermally sprayed tungsten carbide coating is widely used for wear resistance applications. In this study, magnetorheological fluid based finishing (MRF) process with diamond powder abrasive particles is used to achieve a nanolevel surface finish on pre-polished tungsten carbide coating. The incorporation of a chemical etchant in MRF results in a higher finishing rate. However, the MRF technique's effectiveness is limited at higher wheel velocities. To overcome this, CIPdiamond and CIP-diamond-graphene composite abrasives are introduced, which show higher material removal rates and better stability at elevated wheel speeds. The MRF process with CIPdiamond-graphene abrasives achieves the lowest surface roughness (Sa) of 55 nm and highest MRR.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Mayank Kumar, Tharra Bhavani, Sunil Rawal, Ajay Sidpara
Summary: This research reports a method of nanofinishing on chemically nickel-plated surfaces and studies the effect of chemical treatment on surface properties. Hydrogen peroxide forms a passivated layer for easy material removal, while hydrofluoric acid improves surface quality and removes contaminants.
Article
Engineering, Mechanical
Mayank Kumar, Ajay Sidpara, Vikranth Racherla
Summary: This study uses the solvent casting method to fabricate a porous elastomeric tool with self-replenishing and self-lubrication properties. By selecting different materials as workpieces, the wear mechanisms and loading of the flexible abrasive tool are studied, and the mechanism of tool wear and tool loading is analyzed.
Article
Engineering, Manufacturing
Nitesh Kumar Dubey, Ajay Sidpara, Rajaram Lakkaraju
Summary: Magnetorheological fluid-based finishing is a recognized technique for precise finishing of components, with material removal depending on MR fluid ribbon's velocity and compression during interaction with the workpiece. This article investigates the ejection of magnetic and abrasive particles during carrier wheel rotation by balancing centrifugal and magnetic forces. Experimental results demonstrate reduction in MR fluid ribbon thickness and surface roughness initially decreases and then increases with increasing carrier wheel speed. The theoretical and actual departure speed of magnetic particles from the MR fluid ribbon show good agreement.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2023)
Article
Materials Science, Multidisciplinary
Nitesh Kumar Dubey, Ajay Sidpara, Rajaram Lakkaraju
Summary: A dynamic viscosity model is proposed based on the varying magnetic flux density of the neodymium permanent magnet. The model provides a better analysis of the influence function compared to standard non-Newtonian fluid models. Numerical and experimental investigations are conducted to examine the flow behavior of the MR fluid on a freeform surface and understand its influence function.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Sunil Rawal, Mayank Kumar, Ajay M. Sidpara, Jinu Paul
Summary: This study investigated the fabrication of micro channels on stir cast Al6061 alloy using the bottom pouring stir casting method. The influence of micromachining parameters on burr formation, cutting force, and surface roughness was studied. The surface morphology of the micro channels and the mechanism of top burr formation in stir cast Al6061 alloy were analyzed. The results showed that at the optimum parameter, the stir cast Al6061 alloy exhibited improved cutting performance and surface quality compared to the base Al6061 alloy.
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2023)
Article
Polymer Science
Jomy Joseph, Ajith Koroth Koyadan, Ajay M. Sidpara, Jinu Paul
Summary: Hybrid composites of PMMA/graphene/Bentonite and PVC/graphene/Bentonite were prepared by solution casting method and studied for thermal stability, electrical conductivity, and EMI shielding effectiveness in X-band. The presence of Bentonite in the hybrid composites was found to improve thermal stability but decrease electrical conductivity and overall shielding effectiveness in X band. Absorption played a significant role in the overall shielding effectiveness of the hybrid nanocomposites compared to polymer/graphene composites.
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS
(2022)
Article
Engineering, Multidisciplinary
Tikendra Nath Verma, Prem Kumar Chaurasiya, Upendra Rajak, Krishnakant Dhakar, Leeladhar Nagdeve
Summary: The study analyzed the characteristics of a diesel engine using different fuel blends, identifying the optimum ratio as a combination of 20% Moringa Oleifera biodiesel and 20% ethanol. The results indicated improvements in certain performance and emission parameters with this specific fuel blend.
JOURNAL OF ENGINEERING RESEARCH
(2021)