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Journal of Porous Media
Fator do impacto: 1.49 FI de cinco anos: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508

Volumes:
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Journal of Porous Media

DOI: 10.1615/JPorMedia.v8.i6.40
pages 589-597

Sound Absorption Properties of Porous Aluminum

He Siyuan
LASMIS University of Technology of Troyes, 12 rue Marie Curie, 10010 Troyes, France; and Department of Materials Science, Southeast University, Nanjing 210096, China
Gong Xiaolu
Laboratory of Mechanical System and Simultaneous Engineering, P2MN, ICD, University of Technology of Troyes, UMR CNRS STMR 6279,12 Rue Marie Curie, 10010, Troyes, France
Chen Feng
Department of Materials Science, Southeast University, Nanjing 210096, China

RESUMO

The work presented in this paper concerns an investigation of the sound absorption characteristics of a porous aluminum prepared by the negative-pressure infiltration method. In order to examine the sound absorption mechanism, the curves of the sound absorption coefficient of the material studied were compared to those of a typical sound absorption structure. The effects of different porous structure parameters on the sound absorption properties have been studied. The results show that the porous aluminum has the frequency characteristics of a resonance cavity structure at low frequency, whereas those of a traditional porous sound absorption material are at high frequency. The sound absorption capability of the porous aluminum has been seen increasing with the increase of the material porosity and the decrease of pore diameters.