MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Perforated steel panel, 1 1/2 pcf fiberglass backing, 2 inch thick
Flat Baf
PTB reference data
Original description
Perforated steel panel, 1 1/2 pcf fiberglass backing, 2 inch thick
Material properties
Manufacturer: Alpro Structural Systems Corp.
Thickness: 2 inch
Wall distance: 0 mm
Backing: 1 1/2 pcf fiberglass
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.84
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.65 | 1.15 | 1.15 | 1.00 | 0.90 |
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Method (354): Measured