Perforated Flexible Membrane Insertion Influence on The Sound Absorption Performance of Cavity Backed Micro Perforated Panel
- 10.2991/icopia-14.2015.11How to use a DOI?
- flexible perforated membrane, cavity backed MPP, sound absorption
Sound absorption performance of cavity backed perforated panel on respect to the influence of flexible perforated membrane insertion was investigated by using a laboratory experiment. A layer of perforated flexible membrane was fitted inside the cavity backed MPP and the sound absorption coefficient was measured using transfer function based impedance tube technique. Since the inserted perforated membrane oscillated while the sound waves propagated through its perforations, it increased values of oscillating masses inside orifices which was then increased energy loss due to viscous damping associated to the span of amplitudes of the membrane resonance modes. The insertion gave possibility to get a cavity backed MPP design with the higher sound absorption coefficient in a wider low and mid frequency range compared to its of surface modification technique by means variation of the MPP porosity.
- © 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/).
Cite this article
TY - CONF AU - Harjana Harjana AU - Iwan Yahya PY - 2014/09 DA - 2014/09 TI - Perforated Flexible Membrane Insertion Influence on The Sound Absorption Performance of Cavity Backed Micro Perforated Panel BT - Proceedings of the 2014 International Conference on Physics and its Applications PB - Atlantis Press SP - 60 EP - 64 SN - 2352-541X UR - https://doi.org/10.2991/icopia-14.2015.11 DO - 10.2991/icopia-14.2015.11 ID - Harjana2014/09 ER -