Attenuated total reflection technique for on-line oil monitoring by means of a FTIR fiber-optic probe [Elektronische Ressource] / Katarzyna Kudlaty

Institute for Measurement Systems and SensorTechnologyAttenuated Total Re ection techniquefor on-line oil monitoringby means of a FTIR b er-optic probeKatarzyna KudlatyVollst andiger Abdruck der von der Fakult at fur Elektrotechnik undInformationstechnik der Technischen Universit at Munc hen zur Erlangung desakademischen Grades einesDoktor-Ingenieursgenehmigten Dissertation.Vorsitzender: Univ.-Prof. Dr. rer. nat. Doris Schmitt-LandsiedelPrufer der Dissertation: 1. Dr.-Ing. habil. Alexander W. Koch2. Univ.-Prof. Markus-Christian AmannDie Dissertation wurde am 29.04.2004 bei der Technischen Universit at Munc heneingereicht und durch die Fakult at fur Elektrotechnik und Informationstechnikam 01.10.2004 angenommen.AbstractIn the presented thesis, infrared measurement techniques adapted to on-line mon-itoring of the deterioration of lubricants are presented. The deterioration of lubri-cants is revealed by changes of their infrared spectra. For purposes of on-line mon-itoring a Fourier-Transform Infrared Spectroscopy (FTIR) was combined withthe Attenuated Total Re ectance (ATR) measurement technique using infraredtransmitting b ers. The proposed set-up enables direct access to the investigatedsubstances and is characterized by its high measurement sensitivity. The spectro-scopic results enabled the development of a novel, robust and industry-suitableATR-sensor to monitoring of lubricant while in use.