FoamBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerunterlagen 1991
illbruck illsonic waterproof PE foam resonator panel
illsonic waterproof Resonator-Struktur
PTB reference data
Original description
illbruck illsonic waterproof PE foam resonator panel
Material properties
Manufacturer: illbruck GmbH
Thickness: 55 mm
Wall distance: 50 mm
Surface: closed-cell with resonator structure
Application: hygiene area
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.38
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.30 | 0.40 | 0.35 | 0.85 | 0.30 |
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Method (354): Measured