FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 187
Value from the PTB table, not verified
Idikell sound insulation mat M 3815/33 PU foam
Idikell sound insulation mat – M 3815/33
PTB reference data
Original description
Idikell sound insulation mat M 3815/33 PU foam
Material properties
Manufacturer: Siegfried Keller AG
Thickness: 1.3 in
Surface: gray oil- and waterproof skin
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.60
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.45 | 0.75 | 0.70 | 0.55 | 0.50 |
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Value from the PTB table, not verified
NRC: 0.60 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 32 mm · 3,5 kg / m² | 0.60 | 0.13 | 0.21 | 0.32 | 0.40 | 0.56 | 0.67 | 0.80 | 0.77 | 0.73 | 0.70 | 0.64 | 0.60 | 0.54 | 0.53 | 0.52 | 0.50 |
Measured values as a table (1 measurement)
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