The absorption characteristics of elastic framed absorbers in combination with impervious films has been investigated. The effect of bonding the film to the absorber and the absorbers to their rear surface was examined experimentally and theoretically. The absorption of a foam with a film bonded to its top surface is much more sensitive to the rear surface bonding condition than if the film is simply placed on the top surface of the foam. The results demonstrate that test data used to predict absorption performance need to reflect the absorber mounting conditions.
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