Acoustic properties of multi-layer coir fibres sound absorption panel

Rozli Zulkifli, Mohd. Jailani Mohd Nor, Mohd Faizal Mat Tahir, A. R. Ismail, Mohd. Zaki Nuawi

Research output: Contribution to journalArticle

87 Citations (Scopus)

Abstract

A comparison between acoustic sound absorption coefficient and transmission loss index of absorption panel using natural organic multi-layer coir fibre as the filler with and without perforated panels were studied this research. Experimental data obtained using reverberation room test method were compared with data from numerical simulation. The innovative sound absorption panel was developed and fabricated using treated coir fibre layers as sound absorption materials. The outer layer of the panel was fabricated from natural fibre/polyester composite panel. This innovative acoustic panel was tested at acoustic lab, faculty of engineering, Universiti Kebangsaan Malaysia using ISO 354 (1985) standard for noise absorption coefficient and ISO 717-1 standard for the transmission lost index. Simulation study was also conducted for the sound absorption panel using the Win FLAG™ software. For the sound absorption coefficient, the experiment gives the value between 0.70 and 0.80 for the frequency range of 1000 to 1800 Hz while the sound absorption coefficient obtained from simulation gives 0.7 to 0.85 for the frequency range of 500 to 2500 Hz. Transmission lost index gives an average of 20 dB for the panel. The results showed that the sound absorption coefficient obtained through both the experimental and simulation methods were comparable to those use commercially in the market such as rock wool and synthetic fibres.

Original languageEnglish
Pages (from-to)3709-3714
Number of pages6
JournalJournal of Applied Sciences
Volume8
Issue number20
DOIs
Publication statusPublished - 2008

Fingerprint

acoustic properties
sound transmission
fibers
absorptivity
acoustics
simulation
synthetic fibers
frequency ranges
Malaysia
wool
transmission loss
polyesters
reverberation
fillers
rooms
engineering
rocks
computer programs
composite materials

Keywords

  • Acoustic materials
  • Coir fibre
  • Reverberation room
  • Sound absorption coefficient
  • Transmission lost index

ASJC Scopus subject areas

  • General

Cite this

Acoustic properties of multi-layer coir fibres sound absorption panel. / Zulkifli, Rozli; Mohd Nor, Mohd. Jailani; Mat Tahir, Mohd Faizal; Ismail, A. R.; Nuawi, Mohd. Zaki.

In: Journal of Applied Sciences, Vol. 8, No. 20, 2008, p. 3709-3714.

Research output: Contribution to journalArticle

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