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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 24 — Aug. 20, 2004
  • pp: 4718–4722

Characterization of used mineral oil condition by spectroscopic techniques

Jarmo Vanhanen, Marcus Rinkiö, Jukka Aumanen, Jouko Korppi-Tommola, Erkki Kolehmainen, Tuula Kerkkänen, and Päivi Törmä  »View Author Affiliations


Applied Optics, Vol. 43, Issue 24, pp. 4718-4722 (2004)
http://dx.doi.org/10.1364/AO.43.004718


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Abstract

Optical absorption, fluorescence, and quantitative 13C NMR spectroscopy have been used to study the degradation of mineral gearbox oil. Samples of used oil were collected from field service. Measured absorption, fluorescence, and quantitative 13C NMR spectra of used oils show characteristic changes from the spectra of a fresh oil sample. A clearly observable, ∼20-nm blueshift of the fluorescence emission occurs during the early stages of oil use and correlates with changes in intensity of some specific 13C NMR resonance lines. These changes correlate with oil age because of the connection between the blueshift and breaking of the larger conjugated hydrocarbons of oil as a result of use.

© 2004 Optical Society of America

OCIS Codes
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.4630) Instrumentation, measurement, and metrology : Optical inspection
(300.1030) Spectroscopy : Absorption
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

History
Original Manuscript: January 28, 2004
Published: August 20, 2004

Citation
Jarmo Vanhanen, Marcus Rinkiö, Jukka Aumanen, Jouko Korppi-Tommola, Erkki Kolehmainen, Tuula Kerkkänen, and Päivi Törmä, "Characterization of used mineral oil condition by spectroscopic techniques," Appl. Opt. 43, 4718-4722 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-24-4718

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