FoamHigh-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 101
Faist Automotive empfa-Dämmstoff M 927 polyether foam absorber
empfa-Dämmstoff – M 927
PTB reference data
Original description
Faist Automotive empfa-Dämmstoff M 927 polyether foam absorber
Material properties
Manufacturer: Faist Automotive GmbH & Co. KG
Thickness: approx. 12 mm (6 mm polyether foam, 2 mm thermoplastic layer, 4 mm polyether foam)
Wall distance: 0 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.29
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.05 | 0.05 | 0.15 | 0.45 | 0.50 | 0.50 |
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Method (354): Measured