Abstract
In this paper the development of a new experimental method tailored to investigate the lubricant film in sealing contacts is presented and discussed in detail. This technology is based on a new 3-Dimensional mapping technique achieved by image processing the fluorescent emission induced in the oil film of the sealing contact.
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— In a first step, the equipment for calibration was designed and used to optimise the optical system and the concentration of fluorescent dye.
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— In a second step, the lubricant film under a radial seal lip and its correlation to shaft speed and friction torque were studied.
The first calibration trials showed that, with appropriate optimisation, the fluorescent method and the existing tools would be adequate. More detailed investigations and optimisation resulted in a maximum resolution of 0.02 μm between zero and 3.0 μm and a total measuring range of 10 μm. The experimental observation of the fluid film in the sealing contact area using this newly developed fluorescent imaging technology allowed the discrete measurement of the 3-D field of the fluid film thickness under dynamic condition. The average height of the lubricant film under a seal lip was determined also in the submicron range. Scaled 3-D graphs of the shape of the lubricant film were produced from the digitised intensity values of the fluorescent emission.
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© 1992 Springer Science+Business Media Dordrecht
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Poll, G., Gabelli, A., Binnington, P.G., Qu, J. (1992). Dynamic Mapping of Rotary Lip Seal Lubricant Films by Fluorescent Image Processing. In: Nau, B.S. (eds) Fluid Sealing. Fluid Mechanics and its Applications, vol 8. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2412-6_5
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DOI: https://doi.org/10.1007/978-94-011-2412-6_5
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