Non-linear Impedance of a New Sound Absorptive Fibreless Material Title

DOI

10.2991/mic-15.2015.44How to use a DOI?

Keywords

acoustic materials; absorptive materials; soundproof materials; micro-perforated panels; micro-grooved elements, acoustical impedance, non-linear impedance.

Abstract

The Micro-Grooved Element (MGE) is a novel acoustic solution for noise control aiming to provide high sound absorption coefficient with cost effective technology. In this paper the main characteristics of the MGEs are described, including the geometry and the impedance model. The non-linear part of the impedance is investigated experimentally by using the 2-port method and modeled with ansatz equations. The different behavior exhibited by the MGEs at different levels of sound excitations is highlighted and general guidelines are included in order to choose the most suitable element according to the operating conditions.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Fabio Auriemma
AU  - Heiki Tiikoja
PY  - 2015/08
DA  - 2015/08
TI  - Non-linear Impedance of a New Sound Absorptive Fibreless Material Title
BT  - Proceedings of the 2nd International Conference on Modelling, Identification and Control
PB  - Atlantis Press
SP  - 195
EP  - 199
SN  - 1951-6851
UR  - https://doi.org/10.2991/mic-15.2015.44
DO  - 10.2991/mic-15.2015.44
ID  - Auriemma2015/08
ER  -