文档介绍：A Study on Sound Absorption Behavior of
Compound Aluminum Foam
Xiaohong Zhang, Haibin Li Songling Wang
School of Mathematics and Physics Department of Power
North China Electric Power University North China Electric Power University
Baoding 071003, P. R. China Baoding 071003, P. R. China
******@ncepubd.
Abstract—Sound absorption characteristic of pound was measured in different conditions by transfer function
aluminum foam was investigated in this paper. The absorption method. parison of sound absorption curves between
coefficient of the foam was measured in different conditions by the single pound Al foam and the relationship between
the transfer function method. Compared with the single structural parameters of pound Al foam and the
aluminum foam, pound aluminum foam shows a absorption performance was researched. So this study can
significant improvement in sound absorption if the single foam provide a reference data and experimental basis for the
and pound foam have a same thickness of sample and practical application.
depth of air-gap. The effect of structural parameters of the
compound aluminum foam on the sound absorption II. EXPERIMENTAL
performance is significant. And there is a reasonable structural
configuration makes the acoustic properties of pound A. Samples
aluminum foam to the optimal in the usual noise frequencies The