MetalBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968, b2.2-4
Aluminum metal panel with mineral fiber backing
PTB reference data
Original description
Aluminum metal panel with mineral fiber backing
Material properties
Thickness: 0.5 mm aluminum + 16 mm profile shaping
Wall distance: 164 mm
Backing: mineral fiber panel
Mounting: on mounting rail
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.49
Frequency values
αp nach ISO 11654
| f (Hz) | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|
| αp | 0.65 | 0.80 | 0.60 | 0.25 | 0.20 |
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Method (354): Measured