A study on the acoustical absorption behavior of coir fiber using miki model

M. Ayub, Rozli Zulkifli, M. H. Fouladi, Nowshad Amin, Mohd. Jailani Mohd Nor

Research output: Contribution to journalArticle

Abstract

Sound absorption capacity of natural coir fiber collected from coconut husk has been explored and predicted using Miki's empirical model. Experiments are conducted in impedance tube to validate the analytical outcomes for three samples having different thickness backed with and without air gap. Results show that the empirical model can estimate the absorption coefficient of coir fiber favourably well and shows higher accuracy than the Delany-Bazley model. Discrepancies between the predicted and measured absorption coefficient is very low although some inevitable irregularities is observed in the peak positions. However, presented Miki model can evaluate the overall acoustic behavior of coir fiber. This approach can be considered as a very simple and preliminary analytical solution for coir fiber acoustical characterization without considering several physical parameters of porous media. In addition, as a result, no complicated measuring procedure has to be followed to initiate the preliminary study for this material.

Original languageEnglish
Pages (from-to)343-349
Number of pages7
JournalInternational Journal of Mechanical and Materials Engineering
Volume6
Issue number3
Publication statusPublished - Dec 2011

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Fibers
Natural fibers
Porous materials
Acoustics
Acoustic waves
coir
Air
Experiments

Keywords

  • Empirical model
  • Miki model
  • Natural coir fiber
  • Noise absorption

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

A study on the acoustical absorption behavior of coir fiber using miki model. / Ayub, M.; Zulkifli, Rozli; Fouladi, M. H.; Amin, Nowshad; Mohd Nor, Mohd. Jailani.

In: International Journal of Mechanical and Materials Engineering, Vol. 6, No. 3, 12.2011, p. 343-349.

Research output: Contribution to journalArticle

Ayub, M. ; Zulkifli, Rozli ; Fouladi, M. H. ; Amin, Nowshad ; Mohd Nor, Mohd. Jailani. / A study on the acoustical absorption behavior of coir fiber using miki model. In: International Journal of Mechanical and Materials Engineering. 2011 ; Vol. 6, No. 3. pp. 343-349.
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