Estudio experimental de la viscosidad de un fluido magneto-reológico a base de magnetita mineral

F. Donado, C.Y. Mendoza, R. Valencia, J.A. Santiago-García

Abstract


We experimentally study the viscosity of a magnetorheological (MR) fluid based on mineral magnetite and automotive oil for brakes. We use a Brookfield cone-plate rheometer to which it was adapted a solenoid that produces and controls a magnetic field parallel to the cone rotation axis. Even though the particles contain variable amounts of silica impurities and present a wide dispersion in the sizes, the system experiments important changes in the viscosity as a function of the magnetic field, shear rate and particle mean size. We study the behavior of a simplified MR damper and show some of its advantages respect to a conventional damper.

Keywords


magnetorheological fluid; mineral magnetite; magnetorheological damper

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REVISTA MEXICANA DE FÍSICA E, year 18, issue 1, January-June 2021. Semiannual Journal published by Sociedad Mexicana de Física, A. C. Departamento de Física, 2º Piso, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad Universitaria, Alcaldía Coyacán, C.P. 04510 , Ciudad de México. Apartado Postal 70-348. Tel. (+52)55-5622-4946, https://rmf.smf.mx/ojs/rmf-e, rmf@ciencias.unam.mx. Chief Editor: José Alejandro Ayala Mercado.  INDAUTOR Certificate of Reserve: 04-2019-080216402500-203, ISSN: 2683-2216 (on line), 1870-3542 (print), both granted by Instituto Nacional del Derecho de Autor.  Responsible for the last update of this issue, Technical Staff of Sociedad Mexicana de Física, A. C., Fís. Efraín Garrido Román, 2º. Piso, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad Universitaria, Alcaldía Coyacán, C.P. 04510 , Ciudad de México. Date of last modification, January 04, 2021.

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