Sound Absorption Performance Of Natural Kenaf Fibres
In recent years, kenaf fibre has been highlighted for its superiority as the filler for composite materials. However, study of the fibres as an acoustic absorber is still lacking. In this paper, the sound absorption of kenaf fibre specimens are studied both under normal and random sound incidence....
Saved in:
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Elsevier Ltd.
2017
|
Subjects: | |
Online Access: | http://eprints.utem.edu.my/id/eprint/20875/2/Kenaf-APAC2017.pdf http://eprints.utem.edu.my/id/eprint/20875/ https://www.sciencedirect.com/science/article/pii/S0003682X17305583?via%3Dihub http://dx.doi.org/10.1016/j.apacoust.2017.09.012 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
my.utem.eprints.20875 |
---|---|
record_format |
eprints |
spelling |
my.utem.eprints.208752021-07-09T13:47:55Z http://eprints.utem.edu.my/id/eprint/20875/ Sound Absorption Performance Of Natural Kenaf Fibres Lim, Z.Y. Putra, Azma Mohd Nor, Mohd Jailani Yaakob, Mohd Yuhazri T Technology (General) TA Engineering (General). Civil engineering (General) In recent years, kenaf fibre has been highlighted for its superiority as the filler for composite materials. However, study of the fibres as an acoustic absorber is still lacking. In this paper, the sound absorption of kenaf fibre specimens are studied both under normal and random sound incidence. The normal-incidence sound absorption coefficient measurement was conducted using the impedance tube method. The effects of thickness involving full fibre and air-fibre specimen and the effect of bulk density were discussed. For the random-incidence sound absorption coefficient, the test was conducted in a reverberation chamber. From both methods, the results in general reveal that for bulk density of 140–150 kg/m3 and thickness of 25–30 mm, the absorption coefficient is above 0.5 starting from 500 Hz and can reach 0.85 on average above 1.5 kHz. These frequency bandwidth of absorption and the level of absorption coefficient improve significantly when bulk density and thickness are increased. Additional air gap also improve the absorption toward lower frequency. Elsevier Ltd. 2017-09 Article PeerReviewed text en http://eprints.utem.edu.my/id/eprint/20875/2/Kenaf-APAC2017.pdf Lim, Z.Y. and Putra, Azma and Mohd Nor, Mohd Jailani and Yaakob, Mohd Yuhazri (2017) Sound Absorption Performance Of Natural Kenaf Fibres. Applied Acoustics, 130. pp. 107-114. ISSN 0003-682X https://www.sciencedirect.com/science/article/pii/S0003682X17305583?via%3Dihub http://dx.doi.org/10.1016/j.apacoust.2017.09.012 |
institution |
Universiti Teknikal Malaysia Melaka |
building |
UTEM Library |
collection |
Institutional Repository |
continent |
Asia |
country |
Malaysia |
content_provider |
Universiti Teknikal Malaysia Melaka |
content_source |
UTEM Institutional Repository |
url_provider |
http://eprints.utem.edu.my/ |
language |
English |
topic |
T Technology (General) TA Engineering (General). Civil engineering (General) |
spellingShingle |
T Technology (General) TA Engineering (General). Civil engineering (General) Lim, Z.Y. Putra, Azma Mohd Nor, Mohd Jailani Yaakob, Mohd Yuhazri Sound Absorption Performance Of Natural Kenaf Fibres |
description |
In recent years, kenaf fibre has been highlighted for its superiority as the filler for composite materials. However,
study of the fibres as an acoustic absorber is still lacking. In this paper, the sound absorption of kenaf fibre
specimens are studied both under normal and random sound incidence. The normal-incidence sound absorption
coefficient measurement was conducted using the impedance tube method. The effects of thickness involving full
fibre and air-fibre specimen and the effect of bulk density were discussed. For the random-incidence sound
absorption coefficient, the test was conducted in a reverberation chamber. From both methods, the results in
general reveal that for bulk density of 140–150 kg/m3 and thickness of 25–30 mm, the absorption coefficient is
above 0.5 starting from 500 Hz and can reach 0.85 on average above 1.5 kHz. These frequency bandwidth of
absorption and the level of absorption coefficient improve significantly when bulk density and thickness are
increased. Additional air gap also improve the absorption toward lower frequency. |
format |
Article |
author |
Lim, Z.Y. Putra, Azma Mohd Nor, Mohd Jailani Yaakob, Mohd Yuhazri |
author_facet |
Lim, Z.Y. Putra, Azma Mohd Nor, Mohd Jailani Yaakob, Mohd Yuhazri |
author_sort |
Lim, Z.Y. |
title |
Sound Absorption Performance Of Natural Kenaf Fibres |
title_short |
Sound Absorption Performance Of Natural Kenaf Fibres |
title_full |
Sound Absorption Performance Of Natural Kenaf Fibres |
title_fullStr |
Sound Absorption Performance Of Natural Kenaf Fibres |
title_full_unstemmed |
Sound Absorption Performance Of Natural Kenaf Fibres |
title_sort |
sound absorption performance of natural kenaf fibres |
publisher |
Elsevier Ltd. |
publishDate |
2017 |
url |
http://eprints.utem.edu.my/id/eprint/20875/2/Kenaf-APAC2017.pdf http://eprints.utem.edu.my/id/eprint/20875/ https://www.sciencedirect.com/science/article/pii/S0003682X17305583?via%3Dihub http://dx.doi.org/10.1016/j.apacoust.2017.09.012 |
_version_ |
1705060043031838720 |
score |
13.160551 |