Manufacturing Technology 2021, 21(2):231-240 | DOI: 10.21062/mft.2021.022

Experimental characterization of microcomposite magnetorheological elastomer

Salah Rouabah¹, Salah Aguib², Mohamed Hadji¹, Lallia Kobzili²

¹ Laboratory of Studies and Research in Industrial Technology, University of Saad Dahleb Blida1, Algeria

² Dynamic Motors and Vibroacoustic Laboratory, Faculty of Technology, University of Boumerdes35000, Algeria

This work presents an analysis experimental of dynamic properties of microcomposite magnetorheological elastomer (MMRE) by a dynamic mechanical analyzer (DMA). The charge of magnetized iron particles is 40% of the total volume. A dynamic mechanical analysis DMA was carried out, in the scanning mode of the amplitude of shear strain, and for magnetic field densities varying from 0mT to 325mT. The storage modulus G’ and the loss modulus G’’, of the elastomer decrease, when the amplitude of the strain increases. This trend is more pronounced under a higher magnetic flux density (250mT and 325mT). In the presence of the magnetic field, the level of these two dynamic moduli and of the damping increases considerably, passing from one value to another of the applied external magnetic field. As a result, the MR effect of MRE elastomers has increased significantly with increasing magnetic flux density.

Keywords: Microcomposite; Magnetorheological elastomers; Magnetic flux density; Dynamic mechanical properties; Iron particles.

Received: October 21, 2020; Revised: January 20, 2021; Accepted: February 16, 2021; Prepublished online: March 22, 2021; Published: April 6, 2021  Show citation