A study of sound absorption performance of micro-perforated panel absorbers with irregular holes distribution

The demand for comfort environment in terms of the noise level is important in buildings such as classrooms, health care facilities, and auditoriums. Mineral and synthetic porous absorbing materials are commonly used for this purpose. The micro-perforated panel absorber (MPP) is increasingly popular...

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Main Author:	Esraa Amer, Jameel
Format:	Thesis
Language:	English English
Published:	2022
Subjects:	T Technology (General) TH Building construction
Online Access:	http://eprints.utem.edu.my/id/eprint/26893/1/A%20study%20of%20sound%20absorption%20performance%20of%20micro-perforated%20panel%20absorbers%20with%20irregular%20holes%20distribution.pdf http://eprints.utem.edu.my/id/eprint/26893/2/A%20study%20of%20sound%20absorption%20performance%20of%20micro-perforated%20panel%20absorbers%20with%20irregular%20holes%20distribution.PDF
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spelling	my-utem-ep.268932023-10-16T09:52:20Z A study of sound absorption performance of micro-perforated panel absorbers with irregular holes distribution 2022 Esraa Amer, Jameel T Technology (General) TH Building construction The demand for comfort environment in terms of the noise level is important in buildings such as classrooms, health care facilities, and auditoriums. Mineral and synthetic porous absorbing materials are commonly used for this purpose. The micro-perforated panel absorber (MPP) is increasingly popular as one of the sound absorbing systems with high acoustical performance and more environmentally friendly to the traditional porous materials. However, the only drawback for the MPP is its narrow band of absorption frequency. This study presents the effect of holes distribution over the MPP surface on sound absorption performance for a single layer MPP model and to improve the absorption frequency bandwidth especially to the lower frequency range. The simulation employed the finite element method (FEM) using COMSOL Multiphysics by considering the viscothermal effects to calculate acoustic impedance and absorption coefficient. For both homogeneous and inhomogeneous perforation are considered in the analysis. The results demonstrate that by spreading out the holes around the edge of the MPP, the absorption coefficient can be seen to shift to the lower frequency. All results have also been shown to have good agreement with the experiment 2022 Thesis http://eprints.utem.edu.my/id/eprint/26893/ http://eprints.utem.edu.my/id/eprint/26893/1/A%20study%20of%20sound%20absorption%20performance%20of%20micro-perforated%20panel%20absorbers%20with%20irregular%20holes%20distribution.pdf text en public http://eprints.utem.edu.my/id/eprint/26893/2/A%20study%20of%20sound%20absorption%20performance%20of%20micro-perforated%20panel%20absorbers%20with%20irregular%20holes%20distribution.PDF other en validuser https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=122070 mphil masters Universiti Teknikal Malaysia Melaka Faculty of Mechanical Engineering Putra, Azma
institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English English
advisor	Putra, Azma
topic	T Technology (General) TH Building construction
spellingShingle	T Technology (General) TH Building construction Esraa Amer, Jameel A study of sound absorption performance of micro-perforated panel absorbers with irregular holes distribution
description	The demand for comfort environment in terms of the noise level is important in buildings such as classrooms, health care facilities, and auditoriums. Mineral and synthetic porous absorbing materials are commonly used for this purpose. The micro-perforated panel absorber (MPP) is increasingly popular as one of the sound absorbing systems with high acoustical performance and more environmentally friendly to the traditional porous materials. However, the only drawback for the MPP is its narrow band of absorption frequency. This study presents the effect of holes distribution over the MPP surface on sound absorption performance for a single layer MPP model and to improve the absorption frequency bandwidth especially to the lower frequency range. The simulation employed the finite element method (FEM) using COMSOL Multiphysics by considering the viscothermal effects to calculate acoustic impedance and absorption coefficient. For both homogeneous and inhomogeneous perforation are considered in the analysis. The results demonstrate that by spreading out the holes around the edge of the MPP, the absorption coefficient can be seen to shift to the lower frequency. All results have also been shown to have good agreement with the experiment
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Esraa Amer, Jameel
author_facet	Esraa Amer, Jameel
author_sort	Esraa Amer, Jameel
title	A study of sound absorption performance of micro-perforated panel absorbers with irregular holes distribution
title_short	A study of sound absorption performance of micro-perforated panel absorbers with irregular holes distribution
title_full	A study of sound absorption performance of micro-perforated panel absorbers with irregular holes distribution
title_fullStr	A study of sound absorption performance of micro-perforated panel absorbers with irregular holes distribution
title_full_unstemmed	A study of sound absorption performance of micro-perforated panel absorbers with irregular holes distribution
title_sort	study of sound absorption performance of micro-perforated panel absorbers with irregular holes distribution
granting_institution	Universiti Teknikal Malaysia Melaka
granting_department	Faculty of Mechanical Engineering
publishDate	2022
url	http://eprints.utem.edu.my/id/eprint/26893/1/A%20study%20of%20sound%20absorption%20performance%20of%20micro-perforated%20panel%20absorbers%20with%20irregular%20holes%20distribution.pdf http://eprints.utem.edu.my/id/eprint/26893/2/A%20study%20of%20sound%20absorption%20performance%20of%20micro-perforated%20panel%20absorbers%20with%20irregular%20holes%20distribution.PDF
_version_	1783728745722413056

A study of sound absorption performance of micro-perforated panel absorbers with irregular holes distribution

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