Abstract:
In this present work, we investigate damping behavior of filled and layered composite material that has its inclusions coated by viscoelastic coating material. To analyze its behavior, we use generalized self-consistent Eshelby method with correspondence principle approach. The viscous coating layer is assumed to possess properties at its glass transition temperature. This analytical study reveals that at ultra thin coating layer, the composite exhibits very high loss characteristics where its effective loss moduli significantly exceed the loss moduli of both coating and matrix materials. High shearing dissipation mechanism in ultra thin layer of viscoelastic coating material is found to be responsible for this peculiar behavior. This remarkable loss amplification effect is technologically appealing as such composites with high damping and high stiffness properties might be attainable. © 2014 Springer Science+Business Media Dordrecht.
