Análise de vibração de um sistema de engrenagens na presença de óleo lubrificante

• Autor(a) principal: Freitas, Felipe Martins de
• Data de Publicação: 2017
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
• Texto Completo: http://www.repositorio.ufc.br/handle/riufc/55027
• topic: Tribologia; Lubrificação; FFT; Sinais vibratórios; RMS; Fator K

Analyze and study the lubrication of rotating machines and any other type of machine in which the contact generates unwanted friction, causing problems like fatigue of the material is essential for the improvement of future projects. Thus, this work had as main objective to detect and quantify the improvement of a rotating machine by means of an oil bath system, in which the lubricant remains in a closed system, continuously lubricating the transmission gears. For this purpose, bench tests were performed that transmit power between axes through gears and analyzed vibration signals generated using accelerometer, signal conditioner, oscilloscope and a computer with computational software to implement the program developed for the calculations of the functions and graphs required for analysis. The FFT (Fast Fourier Transform) technique was not only used to initially detect the point of greatest vibration in the bench (which was fixed as the point of analysis for all subsequent tests), but also to check the smoothness of the results obtained through technique chosen as focus that was the analysis of RMS, K and Crest factors. These factors showed great sensitivity in the difference between the dry and lubricated system. However, it was not possible to detect them by altering their comparative values, the presence of an additive in the lubricant which changes the tribology of the contact