Experimental investigation of sound absorption of acoustic wedges for anechoic chambers

The results of measuring the sound absorption by acoustic wedges, which were performed in AC-3 and AC-11 reverberation chambers at the Central Aerohydrodynamic Institute (TsAGI), are presented. Wedges of different densities manufactured from superfine basaltic and thin mineral fibers were investigat...

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Bibliographic Details
Published in:Acoustical physics 2015-09, Vol.61 (5), p.606-614
Main Authors: Belyaev, I. V., Golubev, A. Yu, Zverev, A. Ya, Makashov, S. Yu, Palchikovskiy, V. V., Sobolev, A. F., Chernykh, V. V.
Format: Article
Language:English
Subjects:
Absorption
Acoustic absorption
Acoustics
Analogs
Construction
Density
Physical Foundations of Engineering Acoustics
Physics
Physics and Astronomy
Reverberation chambers
Sound
Wedges
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Summary:The results of measuring the sound absorption by acoustic wedges, which were performed in AC-3 and AC-11 reverberation chambers at the Central Aerohydrodynamic Institute (TsAGI), are presented. Wedges of different densities manufactured from superfine basaltic and thin mineral fibers were investigated. The results of tests of these wedges were compared to the sound absorption of wedges of the operating AC-2 anechoic facility at TsAGI. It is shown that basaltic-fiber wedges have better sound-absorption characteristics than the investigated analogs and can be recommended for facing anechoic facilities under construction.
ISSN:1063-7710
1562-6865
DOI:10.1134/S1063771015050048