A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Limiting Friction in a Slider-Disk Interface with Nanometer-Scale Lubricant Films
Abstract Previous studies involving a “starved” liquid-lubricated slider-disk interface with film thicknesses on the scale of 10-100 ran showed unusual results. The friction force, after increasing nearly linearly with speed was found to decrease beyond a certain sliding speed and then reach a plateau. Similarly, the interface capacitance was found to decrease and plateau. The reason for these effects has not yet been established. In the current work, friction and capacitance measurements are conducted in both starved and nominally fully flooded modes. In the fully flooded case, the friction force exhibits behavior similar to that of the starved condition, but with a much less significant drop in friction once the peak is reached. A theoretical analysis is performed in conjunction with the experiments. The results of this study suggest that the lubricant can sustain a peak shear stress at a lower shear rate that is higher than the maximum shear stress that can be supported at higher shear rates.
Limiting Friction in a Slider-Disk Interface with Nanometer-Scale Lubricant Films
Abstract Previous studies involving a “starved” liquid-lubricated slider-disk interface with film thicknesses on the scale of 10-100 ran showed unusual results. The friction force, after increasing nearly linearly with speed was found to decrease beyond a certain sliding speed and then reach a plateau. Similarly, the interface capacitance was found to decrease and plateau. The reason for these effects has not yet been established. In the current work, friction and capacitance measurements are conducted in both starved and nominally fully flooded modes. In the fully flooded case, the friction force exhibits behavior similar to that of the starved condition, but with a much less significant drop in friction once the peak is reached. A theoretical analysis is performed in conjunction with the experiments. The results of this study suggest that the lubricant can sustain a peak shear stress at a lower shear rate that is higher than the maximum shear stress that can be supported at higher shear rates.
Limiting Friction in a Slider-Disk Interface with Nanometer-Scale Lubricant Films
Zheng, J. (author) / Streator, J. L. (author)
2001-01-01
8 pages
Article/Chapter (Book)
Electronic Resource
English
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