Recently Published Paper

: Eighth International Conference on ER fluids and MR Suspensions

- Nice, July 9-13 2001-

1) Title : Electrostriction Effect in Solid-State Electrorheological Composites for Sensing Application

            G.H.Kim and Y.M.Shkel

Abstract :

Solid electrorheological (ER) composites are prepared by arranging suspended particles in polymer melts with an electric field and cross-linking the obtained structure. Electrostriction phenomenon of ER composites is defined as a deformation effect on the dielectric properties. Composite materials with a chain-like structure demonstrate large electrostriction response to normal and shear deformations. High sensitivity of anisotropic composites to shear electrostriction can be utilized for vibration control and for shear stress/strain sensor applications. We model an electrostriction behavior and provide experimental data characterizing electromechanical properties of the synthesized ER composites

2) Title : Determination of Rheological and Magnetic Properties for Magnetorheological Composites via Shear Magnetization Measurements

            A.T.Horvart, D.J.Klingenberg and Y.M.Shkel

Abstract :

Anisotropic solid-state magnetorheological (MR) composites are prepared by applying magnetic fields to isotropic suspensions in polymer melts and preserved by cross-linking the melts. The composites are studied through a continuum-level perspective at various magnetic field strengths under oscillatory shear. The minimum number of constraints are applied in the derivation of the magnetic and rheological invariants, which relate the measured macroscopic magnetostriction coefficients to the discrete parameters of any microscopic model. The field-induced stress is defined by magnetostriction coefficients, which are material parameters that describe the strain dependence of the magnetization tensor. A comparison of the independently measured rheological and magnetic properties allow for the determination of the magnetostriction coefficients.

Next paper

1) Field-aided manufacturing of polymer composites with anisotropic structure.

            G.H.Kim, T.Filanc-Bowen, Lih-Sheng Turng, and Y.M.Shkel