FoamHigh-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 185
Value from the PTB table, not verified
Idikell M Series 8000 flexible PUR foam panel
Idikell M – Serie 8000
PTB reference data
Original description
Idikell M Series 8000 flexible PUR foam panel
Material properties
Manufacturer: Siegfried Keller AG
Thickness: 10 mm, 20 mm, 40 mm
Wall distance: 0 mm
Up to fire class: self-extinguishing
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 3 variants
αw
0.40
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.15 | 0.35 | 0.75 | 0.90 | 0.90 |
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| Compare | Value | |
|---|---|---|
| 40 mm | αw0.40 | |
| 20 mm | αw0.25 | |
| 10 mm | αw0.15 |
Weight / density: ca. 30 kg / m³
Distance: 0
Measured values as a table (3 measurements)
| Build-up | αw | 100 Hz | 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 | 6300 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 mm · ca. 30 kg / m³ · 0 | 0.15 | 0.02 | 0.02 | 0.02 | 0.04 | 0.05 | 0.06 | 0.06 | 0.03 | 0.08 | 0.12 | 0.16 | 0.20 | 0.23 | 0.33 | 0.40 | 0.41 | 0.52 | 0.65 | 0.84 |
| 20 mm · ca. 30 kg / m³ · 0 | 0.25 | 0.04 | 0.06 | 0.09 | 0.09 | 0.09 | 0.11 | 0.13 | 0.13 | 0.16 | 0.23 | 0.29 | 0.39 | 0.45 | 0.64 | 0.65 | 0.75 | 0.78 | 0.73 | 0.70 |
| 40 mm · ca. 30 kg / m³ · 0 | 0.40 | 0.09 | 0.10 | 0.13 | 0.13 | 0.13 | 0.17 | 0.23 | 0.36 | 0.43 | 0.60 | 0.80 | 0.86 | 0.87 | 0.92 | 0.84 | 0.80 | 0.90 | 0.99 | 0.90 |
Measured values as a table (3 measurements)
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