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Analysis Of Vibro-Acoustic Effect Of Micro-Perforated Panel Sound Absorber

The application of micro-perforated panel (MPP) in the silencers and optimization of dual layer MPP sound absorber are evaluated in this study. MPP is a good candidate to be used in the silencer for achieving high transmission loss as it delivers high sound absorption performance. Boundary ele...

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Main Author: Tan, Wei Hong
Format: Thesis
Language:English
Published: 2013
Subjects:
TJ1-1570 Mechanical engineering and machinery
Online Access:http://eprints.usm.my/43977/1/Tan%20Wei%20Hong24.pdf
http://eprints.usm.my/43977/
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spelling my.usm.eprints.43977 http://eprints.usm.my/43977/ Analysis Of Vibro-Acoustic Effect Of Micro-Perforated Panel Sound Absorber Tan, Wei Hong TJ1-1570 Mechanical engineering and machinery The application of micro-perforated panel (MPP) in the silencers and optimization of dual layer MPP sound absorber are evaluated in this study. MPP is a good candidate to be used in the silencer for achieving high transmission loss as it delivers high sound absorption performance. Boundary element method (BEM) in acoustical simulation has been used to assess the transmission loss performance of silencer attached with MPP, and when compared with the measurement using two-load method shows good agreement with the strong correlation coefficient, which is between 0.77 to 0.89. This verifies the BEM model of the silencer transmission loss analysis. For simple expansion chamber silencer, the application of MPP in the BEM model shows improvement in the transmission loss results with broader frequency bandwidth compared to the simple expansion chamber silencer without the MPP. The simulation work and analysis continues with the reflective system silencer and perforated tube silencer with MPP. The second part of this study is the optimization of the dual layer MPP sound absorber with consideration of the vibro-acoustic effect in which the classical plate equation is coupled to the acoustic wave equation. This is enhancing the sound absorption performance of an MPP sound absorber by taking the advantage of MPP plate vibration effect. The results of the vibro-acoustic model when applied to the single layer MPP, were found to be in good agreement with other published results. 2013-09 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/43977/1/Tan%20Wei%20Hong24.pdf Tan, Wei Hong (2013) Analysis Of Vibro-Acoustic Effect Of Micro-Perforated Panel Sound Absorber. PhD thesis, Universiti Sains Malaysia.
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic TJ1-1570 Mechanical engineering and machinery
spellingShingle TJ1-1570 Mechanical engineering and machinery
Tan, Wei Hong
Analysis Of Vibro-Acoustic Effect Of Micro-Perforated Panel Sound Absorber
description The application of micro-perforated panel (MPP) in the silencers and optimization of dual layer MPP sound absorber are evaluated in this study. MPP is a good candidate to be used in the silencer for achieving high transmission loss as it delivers high sound absorption performance. Boundary element method (BEM) in acoustical simulation has been used to assess the transmission loss performance of silencer attached with MPP, and when compared with the measurement using two-load method shows good agreement with the strong correlation coefficient, which is between 0.77 to 0.89. This verifies the BEM model of the silencer transmission loss analysis. For simple expansion chamber silencer, the application of MPP in the BEM model shows improvement in the transmission loss results with broader frequency bandwidth compared to the simple expansion chamber silencer without the MPP. The simulation work and analysis continues with the reflective system silencer and perforated tube silencer with MPP. The second part of this study is the optimization of the dual layer MPP sound absorber with consideration of the vibro-acoustic effect in which the classical plate equation is coupled to the acoustic wave equation. This is enhancing the sound absorption performance of an MPP sound absorber by taking the advantage of MPP plate vibration effect. The results of the vibro-acoustic model when applied to the single layer MPP, were found to be in good agreement with other published results.
format Thesis
author Tan, Wei Hong
author_facet Tan, Wei Hong
author_sort Tan, Wei Hong
title Analysis Of Vibro-Acoustic Effect Of Micro-Perforated Panel Sound Absorber
title_short Analysis Of Vibro-Acoustic Effect Of Micro-Perforated Panel Sound Absorber
title_full Analysis Of Vibro-Acoustic Effect Of Micro-Perforated Panel Sound Absorber
title_fullStr Analysis Of Vibro-Acoustic Effect Of Micro-Perforated Panel Sound Absorber
title_full_unstemmed Analysis Of Vibro-Acoustic Effect Of Micro-Perforated Panel Sound Absorber
title_sort analysis of vibro-acoustic effect of micro-perforated panel sound absorber
publishDate 2013
url http://eprints.usm.my/43977/1/Tan%20Wei%20Hong24.pdf
http://eprints.usm.my/43977/
_version_ 1643710883809984512
score 13.211869

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