GypsumBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 204
Knauf Perlgips cassette, perforated 6/18 with mineral fiber
Perlgips cassette, perforated – 4520 01-06 perforation 6/18
PTB reference data
Original description
Knauf Perlgips cassette, perforated 6/18 with mineral fiber
Material properties
Manufacturer: Knauf Hauptverwaltung Iphofen
Thickness: 9.5 mm
Wall distance: 53 mm
Perforation: 7.5%
Hole size: 6 mm
Backing: Paratex non-woven and 20 mm mineral fiber mat
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.51
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.30 | 0.65 | 0.75 | 0.65 | 0.45 | 0.25 |
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Method (354): Measured
