Design of 1 3 0 3 viscoelastic composite layer for augmented active passive constrained layer damping of structural vibration

Abstract

In this dissertation two kinds of viscoelastic composite VEC layers are proposed by the names of 1 3 and 0 3 VEC layers The 1 3 VEC layer is comprised of the inclusion of unidirectional graphite wafers or strips while the other one 0 3 VEC is composed of a rectangular array of thin rectangular graphite wafers The objective in these designs of the VEC layers is to augment the damping in the unconstrained layer damping UCLD passive constrained layer damping PCLD and active constrained