FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 186
Value from the PTB table, not verified
Idikell M 3815/22 PU foam absorber, oil- and water-resistant
Idikell – M 3815/22
PTB reference data
Original description
Idikell M 3815/22 PU foam absorber, oil- and water-resistant
Material properties
Manufacturer: Siegfried Keller AG
Thickness: 0.9 in
Surface: gray, oil- and water-resistant skin
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.50
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.20 | 0.40 | 0.70 | 0.65 | 0.50 |
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Value from the PTB table, not verified
NRC: 0.50 (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 | 5000 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 22 mm · 3,1 kg / m² | 0.50 | 0.10 | 0.13 | 0.17 | 0.20 | 0.26 | 0.34 | 0.40 | 0.51 | 0.62 | 0.75 | 0.72 | 0.67 | 0.64 | 0.59 | 0.53 | 0.48 | 0.55 |
Measured values as a table (1 measurement)
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