Abstract
Statistical energy analysis (SEA) has been extensively used for predicting the transmission loss of sound and vibration through the complex structural-acoustic systems. The SEA method proved to be an effective tool for analysing the response of such complex systems at early design stage of the product. In the present study, the SEA parameters such as modal density, damping loss factor, and coupling loss factor have been evaluated by a theoretical and experimental approaches. In order to analyse the effect of different material properties on the SEA parameters, conventional materials such as mild steel, stainless steel, aluminium, and glass fibre epoxy composite have been considered. Beside in case of composite plates, the effects of different fibre orientation on the SEA parameters have been studied. The free-free boundary condition is considered for evaluating the SEA parameters.
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