Experimental Study on an Influence of Bearing Geometry and TiO2 Nanoparticle Additives on the Performance Characteristics of Fluid Film Lubricated Journal Bearing

Suryawanshi, Shubham R.; Pattiwar, J.T.

doi:10.24874/ti.2019.41.02.08

Cited by 11 publications

(10 citation statements)

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“…Studies have already proven the beneficial tribological effects of cupric oxide in commercial motor oil [21], in base oil [22] and in vegetable oil [23] as well. The titania nanoadditive is excellent for the friction, wear and lubrication of closed mechanical equipment such as electric vehicle transmission [24] or journal bearings [25,26]. In addition to using nanoparticles as a lubricant additive, another significant potential is their use in cutting fluids.…”

Section: Introductionmentioning

confidence: 99%

Tribological Investigation of the Effect of Nanosized CuO and TiO2 on a Base Oil Containing Komad 323 Dispersant

Szabó,

Marsicki,

Hargitai

2023

Preprint

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In this article, copper(II) oxide and titanium dioxide nanoparticles were added to Group III base oil formulated with 8 wt% Komad 323 dispersant. The nanoparticles were treated with ethyl oleate surface modification. The tribological properties of the homogenized oil samples were tested on a linear oscillating tribometer with continuous monitoring of static friction. Friction absolute integral values were calculated from high data acquisition. The wear was evaluated using a digital optical and confocal microscope. The wear types were characterized with scanning electron microscopy, while the remaining additives were located and quantified with energy-dispersive X-ray spectroscopy. The measurement results show that the CuO nanoparticles did not work well with the Komad 323 dispersant. As a result of their antagonistic effect, in the case of low CuO concentrations (≤0.3 wt%), the friction increased, while in the case of high concentrations (≥0.4%), surface fatigue caused a high wear rate. The cooperation between TiO2 and the dispersant showed synergistic effects. The oxygen-rich boundary layer formed on the worn surface with a titanium content of 0.33-0.39 norm.wt% provides both lower friction and high wear resistance.

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Section: Introductionmentioning

confidence: 99%

Tribological Investigation of the Effect of Nanosized CuO and TiO2 on a Base Oil Containing Komad 323 Dispersant

Szabó,

Marsicki,

Hargitai

2023

Preprint

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“…The presence of nanoparticles affects the rheology of the lubricant, hence understanding the rheological behaviour of nano-lubricant is required [27]. Various rheological tests of nano-lubricants confirm that the nano-additives increase the viscosity of base lubricant [28][29][30][31][32][33], control the reduction of the viscosity with increasing temperature and enhances the thermal conductivity [29][30][31][32]34], which improves the static [13,14,35] and dynamic performance [20,36] of the bearing. The inclusion of nano-additives in lubricant significantly improves the tribological properties of the lubricant [37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

A critical review of the effect of nano-lubricant on the performance of hydrodynamic journal bearing

Mishra,

Aggarwal

2023

Finnish J. Trib.

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The applications of nano-lubricants in journal bearing are found to be capable of improving load-carrying capacity and reducing friction. Many numerical and experimental investigations have been performed to find the effect of nano-lubricants on the performance of the journal bearing. In this paper, a state-of-the-art review is done of the articles of numerical and experimental assessments of the effect of nano-lubricants on the performance of journal bearings. Here research articles are classified on the basis of nanoparticles used as nano-additive, which are further classified in the category of numerical and experimental study. It is seen that the application of nano TiO2, CuO and Al2O3 based nano-lubricants gives much higher load-carrying capacity than the base lubricants. This article concludes by discussing the effect of different nanoparticle-based nano-lubricants on the performance characteristics of the journal bearing and mathematical models used for numerical investigations.

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“…Pressure distribution and load capacity increased with the addition of nanoparticles, while there was a reduction in side leakage and oil flow rate. Later, they [28] experimentally investigated the performance of circular and elliptical bearings with three types of base oils and also with 0.5wt% of TiO2 nanoparticles blended in these oils. There was a maximum improvement in the static and dynamic performance of elliptical bearing operated with nanolubricant.…”

Section: Introductionmentioning

confidence: 99%

Effect of TiO2 and CuO Based Nanolubricants on the Static Thermal Performance of Circular Journal Bearings

Dang¹,

Dhami²,

Goyal³

et al. 2021

Tribol. Ind.

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Circular journal bearings constitute the heart of power generation equipments due to their simple design, ease in manufacturing and high loadcarrying capacity. Hydrodynamic action in these bearings is manifested by the presence of a single oil film, which increases the oil film temperature at higher loads. However, in order to improve the performance of bearings and for overall optimization of equipment efficiency, lubricants with specialized additives are being explored. With the advancements in nanotechnology, lubricants have been blended with nanoparticles for enhancing tribological characteristics. The existing studies are more focused on examining the influence of nanolubricants for boundary lubrication regime. Hence, this article investigates the effect of CuO and TiO2 based nanolubricants in hydrodynamic lubrication regime by studying the static thermal characteristics of circular bearing. Comparative performance analysis has been conducted with both the nanoparticles based lubricants at different concentrations by mixing them in two mineral-based oils having different viscosities. The modified Krieger Dougherty method has been applied for determining the viscosity of nanolubricants. Hydrodynamic pressure and oil film temperature calculations have been performed by developing a model in MATLAB ® R2020a software by considering the effect of variation in the thermophysical properties of nanolubricants. There has been a significant increase in load capacity with just small rise in oil film temperature with the use of nanolubricants. Load capacity with 2wt% addition of TiO2 increased by 14.23% at a journal speed of 2000rpm and eccentricity ratio of 0.6, while there was an increase of 9.23% in the case of CuO at the same parameters. The proposed methodology has an enormous potential for assessing the performance enhancement of turbomachinery used for power generation.

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Experimental Study on an Influence of Bearing Geometry and TiO2 Nanoparticle Additives on the Performance Characteristics of Fluid Film Lubricated Journal Bearing

Cited by 11 publications

References 0 publications

Tribological Investigation of the Effect of Nanosized CuO and TiO2 on a Base Oil Containing Komad 323 Dispersant

Tribological Investigation of the Effect of Nanosized CuO and TiO2 on a Base Oil Containing Komad 323 Dispersant

A critical review of the effect of nano-lubricant on the performance of hydrodynamic journal bearing

Effect of TiO2 and CuO Based Nanolubricants on the Static Thermal Performance of Circular Journal Bearings

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