Estudio de las propiedades mecánicas de los fluidos magnetoreológicos MRF-140CG para determinar su resistencia al flujo bajo la aplicación de campos magnéticos de intensidad variable

Abstract

The research assesses the extent to which the properties of MRF-140CG magnetorheological fluids are altered as the intensity of the magnetic field increases, in order to predict their behavior in devices that use these materials, thus contributing to the design of intelligent mechanical devices, each more sophisticated, reliable and efficient, according to each need. To measure the properties of the MRF-140CG fluid, a Anton Paar Physica MCR-501 rotational rheometer equipped with a MRD- 70 / 1Text magneto-rheological cell was used. From the results of the investigation, it was determined that Bingham's plastic model predicts the dynamic behavior of the MRF-140CG fluid with greater precision compared with others, with an average error rate close to 4%, demonstrating that in the absence of magnetic field the viscosity of the fluid decreases as the temperature increases, whilst under the action of a magnetic field, the resistance to the flow of the fluid increases with the intensity of the field, reaching a maximum value of 42.014 kPa at 800 mT.