PlasticHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe unter www.ibp.fhg.de/rata
Fraunhofer IBP micro-perforated polycarbonate foil absorber
PTB reference data
Original description
Fraunhofer IBP micro-perforated polycarbonate foil absorber
Material properties
Manufacturer: Fraunhofer IBP
Wall distance: 130 mm, 100 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.49
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.05 | 0.30 | 0.70 | 0.70 | 0.70 | 0.55 |
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Method (354): Measured