Effects of compression on the sound absorption of porous materials with an elastic frame
Journal
Applied Acoustics
Journal Volume
69
Journal Issue
1
Pages
31-39
Date Issued
2008
Author(s)
Abstract
The absorption characteristics of a porous material are well known to vary during compression. The transfer matrix method is applied with an elastic frame to explore the effect of compression on absorption properties. In this work, the materials are treated as elastic rather than being made of rigid models. The absorption coefficients of the uncompressed and compressed porous material are initially calculated and verified from the experimental measurements. Then, numerical predictions of absorption coefficient are made for the compressed porous material. © 2006 Elsevier Ltd. All rights reserved.
SDGs
Type
journal article