Utilisation of indigenous resources for acoustical applications / Valliyappan D. Natarajan and Mohd Jailani Mohd Nor

This paper presents the development of novel sound absorbing materials based on natural indigenous resources particularly that of fibrous nature. Coir fiber in the form of stitched mat, which is porous and fuzzy, was utilized as the main sound absorbing component. Composite panels support the coir m...

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Main Authors:	Natarajan, Valliyappan David, Mohd Nor, Mohd Jailani
Format:	Article
Language:	English
Published:	UPENA 2004
Subjects:	Acoustics in engineering. Acoustical engineering
Online Access:	http://ir.uitm.edu.my/id/eprint/11395/ http://ir.uitm.edu.my/id/eprint/11395/1/AJ_VALLIYAPPAN%20D.%20NATARAJAN%20JOME%2005.pdf

id	uitm-11395
recordtype	eprints
spelling	uitm-113952016-07-22T07:57:35Z http://ir.uitm.edu.my/id/eprint/11395/ Utilisation of indigenous resources for acoustical applications / Valliyappan D. Natarajan and Mohd Jailani Mohd Nor Natarajan, Valliyappan David Mohd Nor, Mohd Jailani Acoustics in engineering. Acoustical engineering This paper presents the development of novel sound absorbing materials based on natural indigenous resources particularly that of fibrous nature. Coir fiber in the form of stitched mat, which is porous and fuzzy, was utilized as the main sound absorbing component. Composite panels support the coir mat laterally. The panels were made from oil palm frond fibre (OPF) and rice husk (RH) bounded in either unsaturated polyester (UP) or polypropylene (PP) matrix. The acoustical properties of the composite structures were determined in an impedance tube based on the two-microphone transfer function method in the frequency range of 125Hz to 4000Hz. Overall results indicate that the coir mat-composite panel structure is a potential absorbent-barrier with not less than 50% of sound absorption. General improvements were achieved in the absorption properties over the entire frequency range using the more flexible RH-PP panel while superior low frequency absorption was attained using panel made of 50% volume fraction of OPF I RH mixture in UP. The product of this research offers exceptional cost-performance balance to the existing, relatively expensive noise control industry while reducing waste disposal problems in the plantation industry. UPENA 2004 Article PeerReviewed text en http://ir.uitm.edu.my/id/eprint/11395/1/AJ_VALLIYAPPAN%20D.%20NATARAJAN%20JOME%2005.pdf Natarajan, Valliyappan David and Mohd Nor, Mohd Jailani (2004) Utilisation of indigenous resources for acoustical applications / Valliyappan D. Natarajan and Mohd Jailani Mohd Nor. Journal of Faculty of Mechanical Enginering, 1 (1). pp. 29-37. ISSN 1823-5514
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Acoustics in engineering. Acoustical engineering
spellingShingle	Acoustics in engineering. Acoustical engineering Natarajan, Valliyappan David Mohd Nor, Mohd Jailani Utilisation of indigenous resources for acoustical applications / Valliyappan D. Natarajan and Mohd Jailani Mohd Nor
description	This paper presents the development of novel sound absorbing materials based on natural indigenous resources particularly that of fibrous nature. Coir fiber in the form of stitched mat, which is porous and fuzzy, was utilized as the main sound absorbing component. Composite panels support the coir mat laterally. The panels were made from oil palm frond fibre (OPF) and rice husk (RH) bounded in either unsaturated polyester (UP) or polypropylene (PP) matrix. The acoustical properties of the composite structures were determined in an impedance tube based on the two-microphone transfer function method in the frequency range of 125Hz to 4000Hz. Overall results indicate that the coir mat-composite panel structure is a potential absorbent-barrier with not less than 50% of sound absorption. General improvements were achieved in the absorption properties over the entire frequency range using the more flexible RH-PP panel while superior low frequency absorption was attained using panel made of 50% volume fraction of OPF I RH mixture in UP. The product of this research offers exceptional cost-performance balance to the existing, relatively expensive noise control industry while reducing waste disposal problems in the plantation industry.
format	Article
author	Natarajan, Valliyappan David Mohd Nor, Mohd Jailani
author_facet	Natarajan, Valliyappan David Mohd Nor, Mohd Jailani
author_sort	Natarajan, Valliyappan David
title	Utilisation of indigenous resources for acoustical applications / Valliyappan D. Natarajan and Mohd Jailani Mohd Nor
title_short	Utilisation of indigenous resources for acoustical applications / Valliyappan D. Natarajan and Mohd Jailani Mohd Nor
title_full	Utilisation of indigenous resources for acoustical applications / Valliyappan D. Natarajan and Mohd Jailani Mohd Nor
title_fullStr	Utilisation of indigenous resources for acoustical applications / Valliyappan D. Natarajan and Mohd Jailani Mohd Nor
title_full_unstemmed	Utilisation of indigenous resources for acoustical applications / Valliyappan D. Natarajan and Mohd Jailani Mohd Nor
title_sort	utilisation of indigenous resources for acoustical applications / valliyappan d. natarajan and mohd jailani mohd nor
publisher	UPENA
publishDate	2004
url	http://ir.uitm.edu.my/id/eprint/11395/ http://ir.uitm.edu.my/id/eprint/11395/1/AJ_VALLIYAPPAN%20D.%20NATARAJAN%20JOME%2005.pdf
first_indexed	2023-09-18T22:47:54Z
last_indexed	2023-09-18T22:47:54Z
_version_	1777417348443013120

Utilisation of indigenous resources for acoustical applications / Valliyappan D. Natarajan and Mohd Jailani Mohd Nor

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