Nanowire-Based Magnetorheological Elastomers

ORAL

Abstract

Magnetorheological elastomers (MREs) are composite materials consisting of ferromagnetic particles aligned within an elastomer matrix. The stiffness of the elastomer can be controlled by varying the magnitude of an applied magnetic field. In this study, we present the static and dynamic characteristics of nanowire-based MREs and compare their response to those containing conventional particles. The MRE samples were fabricated using various ferromagnetic materials (iron, cobalt, and nickel) and particle loadings in a silicone rubber matrix and their characteristics evaluated using a material test machine. The static and dynamic properties of the MREs were evaluated under a compressive load for the various compositions. The equivalent damping coefficient of the MRE samples was measured and compared under various magnetic field intensities. The dynamic characteristics, including the dynamic stiffness and loss factor, were measured under sinusoidal excitation in the frequency domain.

–

Authors

  • Richard C. Bell

    The Pennsylvania State University, Altoona, Dept. of Chemistry, Pennsylvania State University, Altoona College, Altoona, PA 16601 USA

  • Jacob L. Planinsek

    Dept. of Chemistry, Pennsylvania State University, Altoona College, Altoona, PA 16601 USA

  • Joseph A. Filer II

    The Pennsylvania State University, Altoona, Dept. of Chemistry, Pennsylvania State University, Altoona College, Altoona, PA 16601 USA

  • Hyun J. Song

    Dept. of Aerospace Engineering, University of Maryland, College Park, MD 20742 USA

  • Norman M. Wereley

    The University of Maryland, Dept. of Aerospace Engineering, University of Maryland, College Park, MD 20742 USA