MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Perforated steel panel backed by 2 inch layer of 2 pcf OCF Type RA-23 Fiberglass
PTB reference data
Original description
Perforated steel panel backed by 2 inch layer of 2 pcf OCF Type RA-23 Fiberglass
Material properties
Manufacturer: Commercial Acoustics
Thickness: 57.15 mm
Wall distance: 0 mm
Backing: 50.8 mm OCF Type RA-23 Fiberglass
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.93
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.30 | 0.80 | 1.20 | 1.10 | 1.05 | 1.05 |
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Method (354): Measured
