Comparison of predicted and measured structure-borne sound of an industrial washing machine on a heavy concrete floor

摘要

The Reception Plate Method (RPM) as proposed by CEN/TC126/WG7 in EN 15657-1 estimatesthe structure-borne sound power injected from a (high mobility) vibrating source into a (lowmobility) concrete reception plate. This power level can be used as an input to predict structurebornesound pressure levels in buildings according to the calculation model in EN 12354-5. Tovalidate both the RPM and the prediction model, measurements are done using two sources: astandard ISO tapping machine and an industrial washing machine placed on three different bases.Both sources are successively placed on the RP and on a concrete floor of a standard impactsound test cell. The sound pressure level in the cell underneath is measured and compared withcalculated values. Difficulties in both the test method and the prediction model are investigated.