Numerical and experimental characterization of the transmission loss of complex composite panels
Keywords:
Acoustic noise, Acoustic wave transmission, Boundary element method, Composite materials, Finite element method, Noise abatement, Porosity, Radiation impedance matrix, Sound transmission lossesAbstract
A numerical method was used to predict the sound transmission loss of simple and complex composite panels. The configurations which were used are a simple plate, an air-filled double plate, and a double plate with cavity absorption. Both the finite element method and boundary element method are used for numerical calculations. The experimental setup is a coupled anechoic-reverberant room. Two sources are used to generate the diffuse sound field.
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