A review of the vibroacoustics of sandwich panels: models and experiments

This paper reviews the most significant works in literature about the acoustic behaviour of sandwich panels, starting from the first examples of multi-layered structures, comprising a series of different layers enclosing an air-gap, to the actual configurations in which the opportunities of emerging manufacturing technologies are considered in the design stages. The focus is on presenting an exhaustive list of dedicated and validated models, which are able to predict the sound transmission through Sandwich panels according to their specific configuration. Some experimental works, aimed to the model correlations, are reviewed, too.