N2 - Urethane foam mattresses are commonly used as cushioning when placing panel flooring on the floor slab of a building. Urethane foam consists of elastic fibres with pores. Both elements can affect the performance of the insulation against impact sounds. However, these effects have not yet been detailed, and they may change if the material properties or constitution of the fibres and pores in the cushioning change. In this paper, we propose an analytical model for use in evaluating the performance of insulation against floor impact sound. This model was used to examine the contribution of the pores versus the elastic fibres to wave transmissions from the flooring surface to the slab. The results reveal that the constitution of the foam (either open or closed cells of pores) and the thickness and hardness of the cushion layer strongly affect the sound insulation performance of the floor. L1 - http://journals.pan.pl/Content/101331/PDF/aoa-2016-0010.pdf L2 - http://journals.pan.pl/Content/101331 PY - 2016 IS - No 1 EP - 106 DO - 10.1515/aoa-2016-0010 KW - urethane foam KW - direct pasted flooring KW - floor impact sound KW - sound pressure level KW - sound insulation performance A1 - Mu, RuiLin A1 - Toyoda, Masahiro A1 - Takahashi, Daiji PB - Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics VL - vol. 41 DA - 2016 T1 - Effect of Urethane Foam Cushioning on Structure-Borne Sound Transferby a Slab with Panel Flooring SP - 99 UR - http://journals.pan.pl/dlibra/publication/edition/101331 T2 - Archives of Acoustics