Porous hard foil in trapezoidal profile on battening

PTB reference data

Original description

Material properties

Thickness: 1 mm

Wall distance: 200 mm

ISO 354 – reverberation chamber

αw

0.65

αp nach ISO 11654

125 Hz

0.20

250 Hz

0.65

500 Hz

0.85

1000 Hz

0.65

2000 Hz

0.75

4000 Hz

0.75

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Method (354): Measured