TY - GEN
T1 - Acoustic performance mixture of natural fibres of oil palm frond (Opf) and empty fruit bunch (efb)
AU - Mageswaran, Ravi Chandran
AU - Ewe, Lay Sheng
AU - Yew, Weng Kean
AU - Mohammad Nazhan, Nasir
AU - Zawawi, Ibrahim
N1 - Funding Information:
The authors thank Universiti Tenaga Nasional’s Bold grant project code: RJO10517844/060 and Malaysian Oil Palm Board (MPOB) for supporting the research work.
Publisher Copyright:
© 2021 Trans Tech Publications Ltd, Switzerland.
PY - 2021/5/10
Y1 - 2021/5/10
N2 - The expansion of the oil palm industry has affected the environment and the poor handling of oil palm waste has greatly endangered the habitat. The oil palm natural fibre waste can be put to good use as sound absorber owing to its amazing acoustic properties. This research focuses on the acoustic properties of mixing Empty Fruit Bunch (EFB) and Oil Palm Frond (OPF) in a thickness of 12 mm, 14 mm, 16 mm, and 18 mm. The fibreboard has been fabricated at a density of 120 kg/m3. The Sound Absorption Coefficient (SAC) and morphologies of all the samples were examined using the Impedance Tube Method (ITM) and Scanning Electron Microscope, (SEM). The findings of this research show the sample’s SAC value increased with thickness. It is noteworthy that this combination percentage of natural fibres of EFB and OPF show good acoustic performance where the SAC values above 0.8 at wide frequency 3000-6400 Hz. Sample thickness 14 mm and 18 mm achieved unity (1.0) at frequency 4000-5500 Hz. In addition, all the samples were found to exceed 90 % of the absorption rate in the range of 4500-6400 Hz. The morphology content of EFB and OPF helps in enhancing the absorption rate.
AB - The expansion of the oil palm industry has affected the environment and the poor handling of oil palm waste has greatly endangered the habitat. The oil palm natural fibre waste can be put to good use as sound absorber owing to its amazing acoustic properties. This research focuses on the acoustic properties of mixing Empty Fruit Bunch (EFB) and Oil Palm Frond (OPF) in a thickness of 12 mm, 14 mm, 16 mm, and 18 mm. The fibreboard has been fabricated at a density of 120 kg/m3. The Sound Absorption Coefficient (SAC) and morphologies of all the samples were examined using the Impedance Tube Method (ITM) and Scanning Electron Microscope, (SEM). The findings of this research show the sample’s SAC value increased with thickness. It is noteworthy that this combination percentage of natural fibres of EFB and OPF show good acoustic performance where the SAC values above 0.8 at wide frequency 3000-6400 Hz. Sample thickness 14 mm and 18 mm achieved unity (1.0) at frequency 4000-5500 Hz. In addition, all the samples were found to exceed 90 % of the absorption rate in the range of 4500-6400 Hz. The morphology content of EFB and OPF helps in enhancing the absorption rate.
KW - Empty Fruit Bunch (EFB)
KW - Oil Palm Frond (OPF)
KW - Scanning Electron Microscope (SEM)
KW - Sound Absorption Coefficient (SAC)
UR - http://www.scopus.com/inward/record.url?scp=85120525864&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/SSP.317.361
DO - 10.4028/www.scientific.net/SSP.317.361
M3 - Conference contribution
AN - SCOPUS:85120525864
SN - 9783035715804
T3 - Solid State Phenomena
SP - 361
EP - 368
BT - Solid State Science and Technology VII
PB - Trans Tech Publications
T2 - 7th International Conference on Solid State Science and Technology 2019
Y2 - 11 November 2019 through 13 November 2019
ER -