Acoustic performance mixture of natural fibres of oil palm frond (Opf) and empty fruit bunch (efb)

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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. 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.

Original languageEnglish
Title of host publicationSolid State Science and Technology VII
PublisherTrans Tech Publications
Pages361-368
Number of pages8
ISBN (Electronic)9783035735802
ISBN (Print)9783035715804
DOIs
Publication statusPublished - 10 May 2021
Event7th International Conference on Solid State Science and Technology 2019 - Putrajaya, Malaysia
Duration: 11 Nov 201913 Nov 2019

Publication series

NameSolid State Phenomena
Volume317
ISSN (Print)1012-0394
ISSN (Electronic)1662-9779

Conference

Conference7th International Conference on Solid State Science and Technology 2019
Abbreviated titleICSSST 2019
Country/TerritoryMalaysia
CityPutrajaya
Period11/11/1913/11/19

Keywords

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

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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