Electroviscoelastic materials as active dampers

Janet M. Biggerstaff; John B. Kosmatka

doi:10.1117/12.475182

11 July 2002 Electroviscoelastic materials as active dampers

Janet M. Biggerstaff, John B. Kosmatka

Proceedings Volume 4695, Smart Structures and Materials 2002: Electroactive Polymer Actuators and Devices (EAPAD); (2002) https://doi.org/10.1117/12.475182
Event: SPIE's 9th Annual International Symposium on Smart Structures and Materials, 2002, San Diego, California, United States

Abstract

Electroviscoelastic materials (EVEMs) are polymeric materials that exhibit changes in structural properties when a voltage is applied across it. In the current study, an EVEM is developed that produce large changes in stiffness and damping materials with applied voltage. The resulting material exhibits many of the same properties as an electrorheological (ER) material, except the current material is self-supporting and thus can be used to applications where viscoelastic materials are used. The EVEM is composed of three components: 20% (by mass) of poly (p-phenylene) (PPP) particles doped with CuCl₂ or FeCl₃, 64% of Dow Sylgard 527 silicone gel, and 16% Dow Corning Sylgard 182 silicone elastomer, where the elastomer is added to for stiffening. Experimental harmonic tests using a double-lap shear test and a 0.025 thick specimens between 1 and 150 Hz reveal a factor six increase in stiffening and a factor of three decrease in damping with applied voltage (1500v).

Citation Download Citation

Janet M. Biggerstaff and John B. Kosmatka "Electroviscoelastic materials as active dampers", Proc. SPIE 4695, Smart Structures and Materials 2002: Electroactive Polymer Actuators and Devices (EAPAD), (11 July 2002); https://doi.org/10.1117/12.475182

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