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 losses
AbstractA 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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