Effect of perforated panel in acoustics absorption performance of coir fiber material

Mohd. Jailani Mohd Nor, Nordin Jamaludin, Fadzlita Mohd Tamiri

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

1 Citation (Scopus)

Abstract

Acoustic absorbers consisting of a perforated facing backed with a porous and fibrous material have been used in architectural acoustics to reduce reverberation properties of closed spaces and to increase acoustic energy dissipation. Perforated panel with different characterization can be used as a facing of acoustic materials, tuned resonant sound absorbers and as airflow diffusers. Previous studies have shown that coconut coir fiber have high potential to be used as acoustic materials as it has many advantages compared to conventional sound absorbers, including reduced product cost, good handling and environmental protection. In this study, the acoustic absorption of coconut coir fiber, with and without perforated facing were determined and the effect of perforated panel towards the acoustic absorption performance was also investigated. The measurements of sound absorption coefficients were done inside a reverberation room available in the Acoustic Laboratory, Department of Mechanical and Materials Engineering, Faculty of Engineering, UKM and the simulation for sound absorption coefficients using WinFLAG™ software. Results have shown that the coconut coir fiber alone can achieve high acoustic absorption at frequencies higher than 2000 Hz. However, when measured with perforated facing, we get higher acoustic absorption between 1000 Hz to 2500 Hz, but lower absorption at higher frequencies.

Original languageEnglish
Title of host publication12th International Congress on Sound and Vibration 2005, ICSV 2005
Pages353-360
Number of pages8
Volume1
Publication statusPublished - 2005
Event12th International Congress on Sound and Vibration 2005, ICSV 2005 - Lisbon
Duration: 11 Jul 200514 Jul 2005

Other

Other12th International Congress on Sound and Vibration 2005, ICSV 2005
CityLisbon
Period11/7/0514/7/05

Fingerprint

fibers
acoustics
absorbers
sound transmission
reverberation
absorptivity
engineering
mechanical engineering
diffusers
porous materials
rooms
energy dissipation
costs
computer programs
products
simulation

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Mohd Nor, M. J., Jamaludin, N., & Mohd Tamiri, F. (2005). Effect of perforated panel in acoustics absorption performance of coir fiber material. In 12th International Congress on Sound and Vibration 2005, ICSV 2005 (Vol. 1, pp. 353-360)

Effect of perforated panel in acoustics absorption performance of coir fiber material. / Mohd Nor, Mohd. Jailani; Jamaludin, Nordin; Mohd Tamiri, Fadzlita.

12th International Congress on Sound and Vibration 2005, ICSV 2005. Vol. 1 2005. p. 353-360.

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

Mohd Nor, MJ, Jamaludin, N & Mohd Tamiri, F 2005, Effect of perforated panel in acoustics absorption performance of coir fiber material. in 12th International Congress on Sound and Vibration 2005, ICSV 2005. vol. 1, pp. 353-360, 12th International Congress on Sound and Vibration 2005, ICSV 2005, Lisbon, 11/7/05.
Mohd Nor MJ, Jamaludin N, Mohd Tamiri F. Effect of perforated panel in acoustics absorption performance of coir fiber material. In 12th International Congress on Sound and Vibration 2005, ICSV 2005. Vol. 1. 2005. p. 353-360
Mohd Nor, Mohd. Jailani ; Jamaludin, Nordin ; Mohd Tamiri, Fadzlita. / Effect of perforated panel in acoustics absorption performance of coir fiber material. 12th International Congress on Sound and Vibration 2005, ICSV 2005. Vol. 1 2005. pp. 353-360
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