Normal incidence sound transmission through double-panel systems lined with relatively stiff, partially reticulated polyurethane foam
JS Bolton, ER Green - Applied Acoustics, 1993 - Elsevier
In this paper we present calculations of the normal incidence sound transmission
performance of double-panel structures when lined with an elastic porous material, in
particular, polyurethane foam. The predictions have been made using a theory for one-
dimensional wave propagation in elastic porous media that makes allowance for two
longitudinal wave-types, ie airborne and frame-borne waves. The boundary conditions that
occur at foam surfaces in noise control treatments are then discussed in detail. To make the …
performance of double-panel structures when lined with an elastic porous material, in
particular, polyurethane foam. The predictions have been made using a theory for one-
dimensional wave propagation in elastic porous media that makes allowance for two
longitudinal wave-types, ie airborne and frame-borne waves. The boundary conditions that
occur at foam surfaces in noise control treatments are then discussed in detail. To make the …
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