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Absorption properties of perforate decorative aluminum ceiling strips

ZHONG Xiangzhang, LIU Jikai (Institute of Acoustics Tongji University, Shanghai·200092)  
Perforate aluminum ceiling strips is a new decorative material of ceiling and wall in modem buildings. It also can be made into good absorber. It often used for the ceilings of hotel lobby, airport, subway station, supermarket, exhibition hall, computer room, etc.This article introduces the absorption properties of this kind of absorbing structure with five kinds of air gaps behind the absorbing layer, in which there are 500mm and 1000mm gaps. At the same time, this article analyzes absorbing peak frequency, its estimative data are in accordance with the data resulted from the experiments.
【CateGory Index】: TU112.42
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