Study Of The Relation Between Oil Viscosity And Vibration In A Gearbox
(Almeida, Rui Gomez Teixeira de)
The crescent implementation, by brazilian industry, of predictivemaintenance techniques demands, from vibration analyses processes, morecapability for supplying information on the state of equipment. Amongthe existent analysis procedures for rotative machines, the vibrationanalysis is one of the more used, being nowadays, present in a wideportion of important industrial sections in Brazil (as the cellulosepulp and paper for instance). This makes, therefore, more and moreimportant to explore all of the possibilities of this method. This workbegins an investigation about the relation between vibration(mechanical signature) and lubrication of rotative machines. As astarting point of this study, it tries to evaluate the effect of thevariation of the viscosity of the lubricant on the vibration signatureof a gear box. The work presents a large experimental database,discusses several methods of signal processing and presents acharacteristic of the vibration signal capable to identify alterationsin the viscosity of the lubricating oil in the tested equipment.
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