FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Value from the PTB table, not verified
Polyether urethane foam, reinforced polyester surface
Type E-100RM – Tufcote
PTB reference data
Original description
Polyether urethane foam, reinforced polyester surface
Material properties
Manufacturer: E-A-R Specialty Composites
Thickness: 1 inch
Wall distance: 0 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.75
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.50 | 0.70 | 0.85 | 0.75 | 0.65 |
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Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 1 inch · 0.17 lb/ft² · 0 | 0.75 | 0.21 | 0.52 | 0.71 | 0.87 | 0.75 | 0.66 |
Measured values as a table (1 measurement)
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