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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| Format: | Article |
| Language: | English |
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UPENA
2004
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| Online Access: | https://ir.uitm.edu.my/id/eprint/11395/1/AJ_VALLIYAPPAN%20D.%20NATARAJAN%20JOME%2005.pdf |
| _version_ | 1796899646053810176 |
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| author | Natarajan, Valliyappan David Mohd Nor, Mohd Jailani |
| author_facet | Natarajan, Valliyappan David Mohd Nor, Mohd Jailani |
| author_sort | Natarajan, Valliyappan David |
| collection | UITM |
| 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. |
| first_indexed | 2024-03-06T01:24:01Z |
| format | Article |
| id | oai:ir.uitm.edu.my:11395 |
| institution | Universiti Teknologi MARA |
| language | English |
| last_indexed | 2024-03-06T01:24:01Z |
| publishDate | 2004 |
| publisher | UPENA |
| record_format | dspace |
| spelling | oai:ir.uitm.edu.my:113952016-07-22T07:57:35Z https://ir.uitm.edu.my/id/eprint/11395/ Utilisation of indigenous resources for acoustical applications / Valliyappan D. Natarajan and Mohd Jailani Mohd Nor jmeche 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 https://ir.uitm.edu.my/id/eprint/11395/1/AJ_VALLIYAPPAN%20D.%20NATARAJAN%20JOME%2005.pdf Utilisation of indigenous resources for acoustical applications / Valliyappan D. Natarajan and Mohd Jailani Mohd Nor. (2004) Journal of Mechanical Engineering (JMechE) <https://ir.uitm.edu.my/view/publication/Journal_of_Mechanical_Engineering_=28JMechE=29/>, 1 (1). pp. 29-37. ISSN 1823-5514 ; 2550-164X https://jmeche.uitm.edu.my/ |
| 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 |
| title | 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_short | 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 |
| topic | Acoustics in engineering. Acoustical engineering |
| url | https://ir.uitm.edu.my/id/eprint/11395/1/AJ_VALLIYAPPAN%20D.%20NATARAJAN%20JOME%2005.pdf |
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