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Oil-Film Thickness in Rolling Bearings
2016There are two kinds of lubrication for the bearings, oil and grease lubrications. In fact, the base oil dissolved in grease is separated from grease due to the centrifugal force of oil at increasing oil temperatures, and it is in fact used to lubricate the rolling bearings (cf. Chap. 5).
Hung Nguyen-Schäfer
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Ultrasonic measurement of oil film thickness using piezoelectric element
The International Journal of Advanced Manufacturing Technology, 2016Ultrasonic method is promising in oil film thickness measurement, while the commonly used commercial transducers are bulky and then sometimes hinder the application of this technology in field. Using the piezoelectric element is an alternative method and has the advantage of being convenient to be fixed.
Kai Zhang +3 more
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Surfactant micelles containing solubilized oil decrease foam film thickness stability
Journal of Colloid and Interface Science, 2014Many practical applications involving three-phase foams (aqueous foams containing oil) commonly employ surfactants at several times their critical micelle concentration (CMC); in these applications, the oil can exist in two forms: (1) oil drops or macroemulsions and (2) oil solubilized within the micelles.
Jongju, Lee, Alex, Nikolov, Darsh, Wasan
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Oil–Particle Separation in a Falling Sphere Configuration: Effect of Oil Film Thickness
Energy & Fuels, 2016High-speed videos of oil-coated solid spheres falling through an aqueous solution were analyzed to determine the amount of oil separated and the velocity of the coated sphere during free fall. The oil-coated sphere configuration is relevant to understanding the recovery of oil from oil sands; hence, bitumen was used as the oil phase.
Sasan Mehrabian +2 more
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Review of ultrasonic-based technology for oil film thickness measurement in lubrication
Tribology International, 2022Lubricant film thickness is the most informative variable that reflects lubrication conditions and transmission efficiency in the mechanical equipment, therefore its measurement is highly important.
Pan Dou +6 more
semanticscholar +1 more source
Mechanical systems and signal processing, 2021
The oil film thickness in an oil-lubricated tribo-pair can be measured using reflected ultrasonic waves and various transformation models. Conventionally, this approach requires the incident signal to be calibrated using off-line methods prior to testing,
Pan Dou +5 more
semanticscholar +1 more source
The oil film thickness in an oil-lubricated tribo-pair can be measured using reflected ultrasonic waves and various transformation models. Conventionally, this approach requires the incident signal to be calibrated using off-line methods prior to testing,
Pan Dou +5 more
semanticscholar +1 more source
Temperature compensation strategy for ultrasonic-based measurement of oil film thickness
Wear, 2021Due to non-destructive testing characteristics, ultrasonic-based measurements are regarded as potential strategies in real-time monitoring of varied lubricant film thickness for tribological systems.
Yaping Jia, Tonghai Wu, Pan Dou, Min Yu
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Ultrasonic technique for measurement of oil-film thickness in metal cold rolling
Tribology - Materials, Surfaces & Interfaces, 2021Lubrication is essential in metal cold rolling operation to regulate friction at the metal–roll interface, reduce energy loss and improve the product surface finish.
G. Adeyemi +3 more
semanticscholar +1 more source
Prediction of oil film thickness in trochoidal pump
Transactions of the Canadian Society for Mechanical Engineering, 2021A model for predicting the oil film thickness between the contact surfaces of the gerotor pump teeth is given in this paper. Gerotor pumps are rotary pumps with inner trochoidal gearing. The working process of the pump is followed by mechanical losses due to friction that occurs between the coupled surfaces. To reduce these losses and avoid wearing of
Tomović, Radoslav +4 more
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, 2020
This paper investigated the performance characteristics of misaligned journal bearing lubricated using couple stress fluids. Based on micro-continuum theory, the modified Reynolds equation for couple stress lubricants was developed, in which viscosity ...
Liangyan Zheng +3 more
semanticscholar +1 more source
This paper investigated the performance characteristics of misaligned journal bearing lubricated using couple stress fluids. Based on micro-continuum theory, the modified Reynolds equation for couple stress lubricants was developed, in which viscosity ...
Liangyan Zheng +3 more
semanticscholar +1 more source