2105 光学的手法を用いた潤滑油の簡易劣化診断法(OS2-2 トライボロジーとその応用(2))

概要

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In this work, we gathered lubricating oils used in actual machines at random and collected contaminants on membrane filter. Using UV-VIS-NIR spectrophotometer, we studied diagnosis method by reflectance of contaminants caught on membrane filter and transmittance of lubricating oil, and we also used colorimetric analysis. We calculated average reflectance of a visible light wavelength and investigated relationships between average reflectance and transmittance at the wavelength of 496nm. As a result, we found there were differences in tendency by degradation grade of lubricating oil. The membrane patches of lubricating oils degraded by oxidation were colored brown and the change in average reflectance and transmittance was large. On the other hand, the membrane patches of lubricating oil contaminated by solid particle were colored gray or black and the change in average reflectance was large but the change in transmittance was little.
2006-05-28