The Effect pf Non-Homogenous Perforation Pattern on Sound Absorption Bandwidth of Micro-Perforate Panel

DOI

10.2991/icopia-14.2015.7How to use a DOI?

Keywords

Micro-perforated panel, non-homogenous perforation pattern, extending absorption bandwidth, excess sound absorber

Abstract

Absorption bandwidth of conventional Micro-Perforated Panel backed by air cavity is limited around 1 octave bands particularly for pore diameter close to 1 mm. Compared with porous material, the absorption bandwidth is relatively narrow. Hence, its applications may become limited. This research shows that multiple-peaks as result of the use of the non-homogenous perforation pattern are useful in extending the bsorption bandwidth. An analytical model is used to predict the absorption coefficient while experimental results are provided for validation

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  - Iwan Prasetiyo
AU  - Joko Sarwono
AU  - Indra Sihar
PY  - 2014/09
DA  - 2014/09
TI  - The Effect pf Non-Homogenous Perforation Pattern on Sound Absorption Bandwidth of Micro-Perforate Panel
BT  - Proceedings of the 2014 International Conference on Physics and its Applications
PB  - Atlantis Press
SP  - 35
EP  - 40
SN  - 2352-541X
UR  - https://doi.org/10.2991/icopia-14.2015.7
DO  - 10.2991/icopia-14.2015.7
ID  - Prasetiyo2014/09
ER  -