✦ LIBER ✦

Equipment for measuring the flow-resistance of porous and fibrous materials

✍ Scribed by D. Huszty; A. Illenyi; Gy. Vass

Publisher: Elsevier Science
Year: 1972
Tongue: English
Weight: 735 KB
Volume: 5
Category: Article
ISSN: 0003-682X
DOI: 10.1016/0003-682x(72)90002-3

No coin nor oath required. For personal study only.

✦ Synopsis

We constructed a sh:gle-purpose equipment for the investigation of the flow resistance' of porous and fibrous acoustical materials utilised in sound absorbing devices. The equipment serving for the measurement underlies on the arrangement reported also by Beranek. 5-9 In its appropriate shaping supplemented with a commutator switch of rotameter tubes and an air-flow regulator with needle-valve. The attainable measuring range is:

for the flow resistance of different materials.

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