Banco de pruebas para el análisis de vibraciones en maquinaria

n the field of vibration analysis, in machinery, it is important to generate vibration records in differentmachine states to identify the relationship between the recorded signals and possible failures.A rotary motion machine can be simulated as a Jeffcott rotor. The work presents the main design parametersand the final construction of a test bench, for the analysis of vibrations in machinery. For the design, themechanical theory of vibration modeling was taken into account, as well as the different force diagramsto show how each of its parts interacts. The versatility of the test bench was also taken into account sothat it was possible to induce different failures. Once the design was consolidated, each of the parts wasmachined and the test bench was installed. In addition, a damping configuration was established, withneoprene, at the base; which was determined through a transmissibility analysis.Once the test bench has been implemented, a methodology for measuring and analyzing the vibratorysignals, captured at two non-rotating points, is designed and put into practice with the intention ofidentifying changes in rigidity and mass unbalance, through the orbits described by the center of the axis atthe two measurement points. In addition to this, a test is established to analyze the spectrum generated bythe system shutdown in order to find the possible resonance frequency. Four different operating scenarioswere analyzed, through which the incidence of the length of the axis between the bearings, the incidenceof the variation of the location of the unbalance disc along the axis and the variation of the centrifugalforce produced by the change of masses added to the disc were identified.Finally, it is shown the behavior of the orbits obtained which demonstrated the different unbalancesproduced in the test bench, through which it was discovered that the machine had an intrinsic unbalance.It was also demonstrated that the best configuration of neoprenes was with these located in the base,because they generated the lowest peak level and their transmissibility was low.With this project, a methodology was established for the construction, measurement and analysis ofvibratory signals captured at two non-rotating points of the rotor, which will serve as a basis for futureprojects in which failures different from those analyzed in this project can be analyzed

• Autores: Muriel Hoyos, Jaison; Herrera Arcila, Camilo
• Fecha de publicación: 2021
• Institución: Universidad de San Buenaventura
• Repositorio: Repositorio USB
• Idioma: spa
• OAI Identifier: oai:bibliotecadigital.usb.edu.co:10819/8149
• Acceso en línea: http://hdl.handle.net/10819/8149
• Palabra clave: Análisis de señales; Diseño mecánico; Banco de pruebas; Vibration; Signal analisys; Mechanic design; Yest bench; Vibraciones; Ingeniería de sonido
• License: Atribución-NoComercial-SinDerivadas 2.5 Colombia