Estudio de la confianza de la medición de la vibración radial con distintos ángulos de ubicación del sensor

Abstract

Organizations performing vibration analysis face a challenge when it comes to measuring radial vibration in equipment with designs that do not allow for perfectly horizontal or vertical placement of the sensor, so they are forced to make measurements with certain angular variations. Uncertainty arises as to whether these measurements reflect reality or are inaccurate; therefore, the objective of the present research work was to determine the influence of the sensor tilt angle on the confidence of radial vibration measurement. For this purpose, a new bearing housing was designed, built, and adapted to the accelerated life testing module in the Technical Diagnostic Laboratory of the Mechanics Faculty at ESPOCH. This new box allowed for the variation of the position of the sensor and, therefore, measurements of the radial vibration velocity to be taken every 6°. After the measurements were taken in all positions, a statistical analysis in Python was used to compare the reference measurement, which was the horizontal one, with each of the following measurements to establish up to which angle of inclination the measurement is reliable and does not vary significantly concerning the reference measurement. The methodology implemented in this research used a quantitative approach; an experimental design was used since the described variables were manipulated, and a sample size of 35 measurements was used for each angle of the sensor location. Using this methodology, it was possible to determine that if it is desired to measure the radial vibration in a horizontal position and due to the design of the equipment, it is not possible to place the sensor in that position, it is necessary to make sure to take a measurement where the sensor does not exceed 6° of inclination concerning the horizontal.