Influence of Particle Size and Bulk Density on Sound Absorption Performance of Oil Palm Frond-Reinforced Composites Particleboard

Budi Istana; I. Made Londen Batan; Samrith Khem; U. Ubaidillah; Iwan Yahya

doi:10.3390/polym15030510

Influence of Particle Size and Bulk Density on Sound Absorption Performance of Oil Palm Frond-Reinforced Composites Particleboard

Budi Istana, I. Made Londen Batan^*, Sutikno, Samrith Khem, U. Ubaidillah^*, Iwan Yahya

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

The present study deals with the sound absorption performance of natural fibres from the oil palm frond (OPF), mainly considered agricultural waste. Therefore, this study aimed to investigate the sound absorption performance of OPF fibre-reinforced composite under normal incidence sound. The materials used were OPF particles and urea-formaldehyde was used as an adhesive. The particleboards were produced with three particle sizes and four target densities. The absorption coefficient of normal incidence sound (α_n) was tested using an impedance tube. The effects of particle size and bulk density were also evaluated. The findings reveal thatα_n exceeded 0.45 at 1000 Hz and could reach 0.95 above 3.3 kHz. This occurred when the bulk density of the OPF composite particleboards ranged between 0.3–0.4 g/cm³, and the particle size varied between medium to coarse. The results also indicated that the absorption frequency and the degree of α_n significantly increased as the bulk density decreased. Therefore, OPF fibres can be used to create sound-absorbing composite particleboards.

Original language	English
Article number	510
Journal	Polymers
Volume	15
Issue number	3
DOIs	https://doi.org/10.3390/polym15030510
Publication status	Published - Feb 2023

Keywords

acoustic absorber
composite
oil palm frond
particleboards
sound absorption coefficient

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title = "Influence of Particle Size and Bulk Density on Sound Absorption Performance of Oil Palm Frond-Reinforced Composites Particleboard",

abstract = "The present study deals with the sound absorption performance of natural fibres from the oil palm frond (OPF), mainly considered agricultural waste. Therefore, this study aimed to investigate the sound absorption performance of OPF fibre-reinforced composite under normal incidence sound. The materials used were OPF particles and urea-formaldehyde was used as an adhesive. The particleboards were produced with three particle sizes and four target densities. The absorption coefficient of normal incidence sound (αn) was tested using an impedance tube. The effects of particle size and bulk density were also evaluated. The findings reveal thatαn exceeded 0.45 at 1000 Hz and could reach 0.95 above 3.3 kHz. This occurred when the bulk density of the OPF composite particleboards ranged between 0.3–0.4 g/cm3, and the particle size varied between medium to coarse. The results also indicated that the absorption frequency and the degree of αn significantly increased as the bulk density decreased. Therefore, OPF fibres can be used to create sound-absorbing composite particleboards.",

keywords = "acoustic absorber, composite, oil palm frond, particleboards, sound absorption coefficient",

author = "Budi Istana and Batan, {I. Made Londen} and Sutikno and Samrith Khem and U. Ubaidillah and Iwan Yahya",

note = "Publisher Copyright: {\textcopyright} 2023 by the authors.",

year = "2023",

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doi = "10.3390/polym15030510",

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journal = "Polymers",

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AU - Istana, Budi

AU - Batan, I. Made Londen

AU - Sutikno,

AU - Khem, Samrith

AU - Ubaidillah, U.

AU - Yahya, Iwan

PY - 2023/2

Y1 - 2023/2

N2 - The present study deals with the sound absorption performance of natural fibres from the oil palm frond (OPF), mainly considered agricultural waste. Therefore, this study aimed to investigate the sound absorption performance of OPF fibre-reinforced composite under normal incidence sound. The materials used were OPF particles and urea-formaldehyde was used as an adhesive. The particleboards were produced with three particle sizes and four target densities. The absorption coefficient of normal incidence sound (αn) was tested using an impedance tube. The effects of particle size and bulk density were also evaluated. The findings reveal thatαn exceeded 0.45 at 1000 Hz and could reach 0.95 above 3.3 kHz. This occurred when the bulk density of the OPF composite particleboards ranged between 0.3–0.4 g/cm3, and the particle size varied between medium to coarse. The results also indicated that the absorption frequency and the degree of αn significantly increased as the bulk density decreased. Therefore, OPF fibres can be used to create sound-absorbing composite particleboards.

AB - The present study deals with the sound absorption performance of natural fibres from the oil palm frond (OPF), mainly considered agricultural waste. Therefore, this study aimed to investigate the sound absorption performance of OPF fibre-reinforced composite under normal incidence sound. The materials used were OPF particles and urea-formaldehyde was used as an adhesive. The particleboards were produced with three particle sizes and four target densities. The absorption coefficient of normal incidence sound (αn) was tested using an impedance tube. The effects of particle size and bulk density were also evaluated. The findings reveal thatαn exceeded 0.45 at 1000 Hz and could reach 0.95 above 3.3 kHz. This occurred when the bulk density of the OPF composite particleboards ranged between 0.3–0.4 g/cm3, and the particle size varied between medium to coarse. The results also indicated that the absorption frequency and the degree of αn significantly increased as the bulk density decreased. Therefore, OPF fibres can be used to create sound-absorbing composite particleboards.

KW - acoustic absorber

KW - composite

KW - oil palm frond

KW - particleboards

KW - sound absorption coefficient

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ER -

Influence of Particle Size and Bulk Density on Sound Absorption Performance of Oil Palm Frond-Reinforced Composites Particleboard

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Keywords

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