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HomeSolid State PhenomenaSolid State Phenomena Vol. 317Acoustic Performance Mixture of Natural Fibres of...

Acoustic Performance Mixture of Natural Fibres of Oil Palm Frond (OPF) and Empty Fruit Bunch (EFB)

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Abstract:

The expansion of the oil palm industry has affected the environment and the poor handling of oil palm waste has greatly endangered the habitat surrounds it. The oil palm natural fibre waste can be put to good use and used as a sound absorber for its amazing acoustic properties. At the same time, the demand for natural fibre sound-absorbing panels is increasing due to its low-cost fabrication and its healthier than synthetic fibre. This research has studied 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 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, 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.

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Solid State Science and Technology VII

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Periodical:

Solid State Phenomena (Volume 317)

Pages:

361-368

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.317.361

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Online since:

May 2021

Authors:

Mageswaran Ravi Chandran, Ewe Lay Sheng*, Yew Weng Kean, Mohammad Nazhan Nasir, Zawawi Ibrahim

Keywords:

Empty Fruit Bunch (EFB), Oil Palm Frond (OPF), Scanning Electron Microscope (SEM), Sound Absorption Coefficient (SAC)

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© 2021 Trans Tech Publications Ltd. All Rights Reserved

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