Mineral woolHigh-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 74
Armstrong Fissured mineral fiber acoustic panels
Fissured
PTB reference data
Original description
Armstrong Fissured mineral fiber acoustic panels
Material properties
Manufacturer: Armstrong Cork International GmbH
Thickness: 15 mm
Wall distance: 500 mm
Dimensions: 300 x 300 mm, 625 x 625 mm, 600 x 1200 mm
Surface weight: 4.7 kg/m²
Surface: three-layer PVAC-based paint coating
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.67
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.40 | 0.40 | 0.50 | 0.70 | 0.90 | 1.00 |
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Method (354): Measured