MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data unter http://www.illbruck-raumakustik.de
Value from the PTB table, not verified
illbruck QUADROLINE expanded metal ceiling system with illtec FM inlay
QUADROLINE
PTB reference data
Original description
illbruck QUADROLINE expanded metal ceiling system with illtec FM inlay
Material properties
Manufacturer: illbruck GmbH
Thickness: 20 mm, 10 mm, 5 mm
Backing: illtec FM cassette inlay C1
Application: ceiling
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 3 variants
αw
0.80
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.60 | 0.85 | 0.70 | 0.90 | 0.95 | 1.00 |
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| Compare | Value | |
|---|---|---|
| 20 mm | αw0.80 | |
| 10 mm thickness der Dämmstoffschicht | αw0.55 | |
| 5 mm thickness der Dämmstoffschicht | αw0.40 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 mm · Stahllochblech | 0.80 | 0.40 | 0.60 | 0.75 | 0.77 | 0.89 | 0.82 | 0.82 | 0.66 | 0.62 | 0.86 | 0.88 | 0.94 | 0.92 | 0.94 | 0.99 | 0.98 | 1.04 | 1.05 |
| 10 mm thickness der Dämmstoffschicht · Stahllochblech | 0.55 | 0.26 | 0.40 | 0.50 | 0.50 | 0.63 | 0.78 | 0.55 | 0.43 | 0.43 | 0.57 | 0.60 | 0.68 | 0.72 | 0.77 | 0.80 | 0.85 | 0.89 | 0.91 |
| 5 mm thickness der Dämmstoffschicht · Stahllochblech | 0.40 | 0.22 | 0.34 | 0.41 | 0.42 | 0.48 | 0.43 | 0.42 | 0.27 | 0.28 | 0.38 | 0.40 | 0.44 | 0.50 | 0.57 | 0.61 | 0.64 | 0.70 | 0.73 |
Measured values as a table (3 measurements)
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