An approach on the vibro-acoustic properties of composite sandwich plates with foam core

In this paper, an approach is proposed and presented to tackle the vibro-acoustic properties of finite clamped composite sandwich plates with foam core. Composite are treated as being orthotropic apparent bending stiffnesses calculated for two principal directions. The plate estimated by element calculation on beam elements cut from considered plates. sound transmission loss predicted using Kirchhoff’s theory, together obtained in Several measurements were conducted laboratory fiberglass/polyester polyurethane compared measured data agreement reasonable.