Magnetorheological finishing of UHMWPE acetabular cup surface and its performance analysis

Arora, Kunal; Singh, Anant Kumar

doi:10.1080/10426914.2020.1784928

Cited by 31 publications

(18 citation statements)

References 37 publications

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“…The MRP fluid is a smart fluid that consists of the electrolytic iron particles (EIPs), polishing abrasives, and the carrier fluid [25]. Under normal conditions, the MRP fluid behaves as a Newtonian fluid, however, once the magnetic field is applied, the EIPs present in the MRP fluid get magnetized [26].…”

Section: Experimentation For Fine Finishing Of An Aerostatic Bearingmentioning

confidence: 99%

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Investigating The Effect of Surface Finishing On Performance of Designed Aerostatic Bearing For Its Improved Precision Applications

Jamwal¹,

Singh²,

Arora³

et al. 2021

Preprint

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Aerostatic bearing is an ultra-precision component that uses a spindle surrounded by a thin film of air. Due to the high accuracy of aerostatic bearing, the demand for these components is very high in electronic, instrumentation, healthcare, and other manufacturing or processing industries. In the present work, the main focused area is on the experimental determination of the effect of roughness parameter on the performance of the aerostatic journal and thrust bearings. To achieve the aim, the aerostatic bearing is designed based on theoretical analysis. The present design is numerically investigated by simulation of airflow in ANSYS Fluent with computational fluid dynamics module. The results from the simulation are validated by the results generated for pressure distribution in previous researches. After performing the finishing on the bearing and spindle surface, the manufactured components are assembled for analysing the variation in radial and axial loads acting on the spindle with the spindle displacement (1-5 μm) in the direction of the load at supply pressures (3-6 bar) in the clearance of 30 μm. For surface improvement of the air bearing, three different techniques are used namely machining, grinding, and magnetorheological finishing. For each roughness reduction technique, the variation in axial and radial loads acting on the spindle is determined with variation in spindle displacement. The experimental results showed the increase in load capacity due to improvement in the surface finish for journal bearing and thrust bearing at 5 µm displacement in the spindle is found to be 0.68 N for machining to grinding and 2.0 N from grinding to magnetorheological finishing respectively. The results determined for the surface finish parameter reveals the effect of surface roughness on the load-carrying capacity of the aerostatic journal and thrust bearing. The current study on the surface finishing of aerostatic bearing is found effective for the applications such as drives in production machines where good grade of surface finish are the major parameters for improving the overall functional efficiency.

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Section: Experimentation For Fine Finishing Of An Aerostatic Bearingmentioning

confidence: 99%

“…The magnetic force acting over a single magnetic iron particle in the presence of the magnetic field towards external spindle surface (Fne) can be evaluated by using Eq. ( 7) [26].…”

Section: Materials Removal Mechanism For Magnetorheological Finishing Of the Spindle And Bearingmentioning

confidence: 99%

Investigating The Effect of Surface Finishing On Performance of Designed Aerostatic Bearing For Its Improved Precision Applications

Jamwal¹,

Singh²,

Arora³

et al. 2021

Preprint

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“…B tl ¼ 0:465 � 0:0017t (18) where B tr and B tl represents the magnetic flux density (MFD) in the working gap 't' (mm) at right and leftside profile of the gear tooth surface. The result of the mathematical calculated MFD is depicted in Figure 6.…”

Section: Calculation Of Number Of Abrasive Particles Eips and Chain Structure Of Eips In Working Gapmentioning

confidence: 99%

“…where M eip represents the magnetization of electrolytic iron particles (EIPs) which can be calculated from the corresponding variation of MFD on it in the working gap from the M-B curve. 34 B t is total MFD variation in the working gap (t) which can be calculated for the right gear tooth profile from equation ( 17) and for left gear tooth profile from equation (18). Further, the MFD is varied along with the working space of MRP fluid amid the tool profile and gear tooth surface.…”

Section: Calculation Of Magnetic Normal Indentation Force On the Aaps At The Right And Left Side Profile Of The Gear Tooth In The Workingmentioning

confidence: 99%

“…These advanced finishing processes based on the magnetic field include the smart fluid known as magnetorheological polishing (MRP) fluid. 18 In the MR fluid-based finishing processes, the applied magnetic field is utilized for controlling the external finishing forces. 19 The MRP fluid consists of electrolytic iron particles (EIPs) powder and abrasive particles powder mixed in a base fluid medium of grease and silicone oil etc.…”

Section: Introductionmentioning

confidence: 99%

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Modeling of surface roughness in a novel magnetorheological gear profile finishing process

Yadav

Singh

Arora

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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Fine finishing of spur gears reduces the vibrations and noise and upsurges the service life of two mating gears. A new magnetorheological gear profile finishing (MRGPF) process is utilized for the fine finishing of spur gear teeth profile surfaces. In the present study, the development of a theoretical mathematical model for the prediction of change in surface roughness during the MRGPF process is done. The present MRGPF is a controllable process with the magnitude of the magnetic field, therefore, the effect of magnetic flux density (MFD) on the gear tooth profile has been analyzed using an analytical approach. Theoretically calculated MFD is validated experimentally and with the finite element analysis. To understand the finishing process mechanism, the different forces acting on the gear surface has been investigated. For the validation of the present roughness model, three sets of finishing cycle experimentations have been performed on the spur gear profile by the MRGPF process. The surface roughness of the spur gear tooth surface after experimentation was measured using Mitutoyo SJ-400 surftest and is equated with the values of theoretically calculated surface roughness. The results show the close agreement which ranges from −7.69% to 2.85% for the same number of finishing cycles. To study the surface characteristics of the finished spur gear tooth profile surface, scanning electron microscopy is used. The present developed theoretical model for surface roughness during the MRGPF process predicts the finishing performance with cycle time, improvement in the surface quality, and functional application of the gears.

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Production and tribological performance under sliding contact conditions of zirconia and reduced graphene oxide loaded polymer nanocomposites for biomedical applications

Singh,

Verma,

Singh

et al. 2023

Polymer Composites

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This work targets the production of novel biomaterials and an optimized process to disperse Zirconia (ZrO2) and reduced graphene oxide (rGO) in the ultra‐high molecular weight polyethylene (UHMWPE) matrix. The mechanical and wear performance of the developed samples were evaluated through compression and tribological tests utilizing a bio‐tribometer. The developed samples are tested under simulated body fluid (SBF) lubricating media. In particular, the hybrid material is made of 5 wt% zirconia and 1 wt% rGO have an enhanced compression modulus of 0.29 GPa. This indicates a 26.08% improvement over pristine UHMWPE. Besides this, the compressive strength of this hybrid material is about 46.75% higher than that of pristine UHMWPE. The gray theory provided optimum settings as 1 wt% rGO and 5 wt% ZrO2 fillers are loading with 60 N load and 900 sec cycle time. The long‐range organized lamellar structures and microfibers were formed between the crystals with the help of the graphene layers. The inclusion of rGO nanofillers (1 wt%) and zirconia improve the wear resistance, which signifies the best‐desired values for coefficient of friction (Cf) and Specific wear rate (Wr). Improved loading conditions for prosthetics and implant components are possible with modified UHMWPE.Highlights This work highlights the tribological performances of hybrid nanocomposites. The effect of rGO and ceramic (ZrO2) nanofillers on UHMWPE was examined. Zirconia/rGO enhanced bio‐inert, wear‐resistant and biocompatibility. Compared to pristine, 1 wt% rGO and 5 wt% ZrO2 sample shows better results. Orthopedic and dental prostheses may be made using hybrid nanocomposite.

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Magnetorheological finishing of UHMWPE acetabular cup surface and its performance analysis

Cited by 31 publications

References 37 publications

Investigating The Effect of Surface Finishing On Performance of Designed Aerostatic Bearing For Its Improved Precision Applications

Investigating The Effect of Surface Finishing On Performance of Designed Aerostatic Bearing For Its Improved Precision Applications

Modeling of surface roughness in a novel magnetorheological gear profile finishing process

Production and tribological performance under sliding contact conditions of zirconia and reduced graphene oxide loaded polymer nanocomposites for biomedical applications

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