Vibro-acoustic coupling in composite plate-cavity systems

Composite materials are extensively utilized today as strategic products. Although this widespread use, their vibro-acoustics characteristics have not been examined extensively. Specifically, the interactive coupling between the vibration and acoustics of composite plate-cavity systems is an untapped field. In this paper, the results of a modal structural-acoustic coupling analysis for plates with different composite parameters are presented. Natural frequencies of the coupled systems are tabulated. The effects of material, ply angle and number of layers on the coupled vibro-acoustic characteristics of composite plate-cavity systems have been examined and compared with the behaviour of isotropic plate systems