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Title: Further proof for the theory of elastic sound absorption about flexible porous materials

Authors: Ren Yonghua; Feng Feilong; Ma Baoke

Addresses: School of Textiles and Materials, Xi'an Polytechnic University, Xi'an 710048, China ' Institute of Applied Acoustics, Shaanxi Normal University, Xi'an 710062, China ' Physics Department, Xi'an Polytechnic University, Xi'an 710048, China

Abstract: A new theory about porous materials has evolved in recent years, and it differs from traditional theories to a large extent. In this paper, by referring to documents to test the new theory experimentally and theoretically, we make analysis of the relationship between thickness of porous materials and the frequency of incident sound wave, so as to further discuss about the new theory. Results prove that the new sound absorption theory is of great significance in the sound absorption mechanism of porous material and very useful in practical application.

Keywords: porous materials; elastic sound absorption theory; further proof.

DOI: 10.1504/IJVNV.2018.093110

International Journal of Vehicle Noise and Vibration, 2018 Vol.14 No.1, pp.62 - 63

Received: 08 Apr 2017
Accepted: 12 Feb 2018

Published online: 27 Jun 2018 *

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