ACOUSTIC PROPERTIES OF SOUND ABSORPTION PANELS USING MULTI-LAYER COIR FIBERS | ||||
The International Conference on Applied Mechanics and Mechanical Engineering | ||||
Article 124, Volume 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., May 2008, Page 92-98 PDF (1.2 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/amme.2008.39751 | ||||
View on SCiNiTO | ||||
Authors | ||||
ZULKIFLI R.1; NOR M.J. M.2; MAT TAHIR F.3; ISMAIL A. R.4 | ||||
1Senior Lecturer, Department of Mechanical & Materials Engineering, Universiti Kebangsaan Malaysia. | ||||
2Professor, Department of Mechanical & Materials Engineering, Universiti Kebangsaan Malaysia. | ||||
3Tutor, Department of Mechanical & Materials Engineering, Universiti Kebangsaan Malaysia. | ||||
4Lecturer, Department of Mechanical & Materials Engineering, Universiti Kebangsaan Malaysia. | ||||
Abstract | ||||
ABSTRACT The aim of the project was to study the potential use of an innovative acoustic absorption panel using natural organic fiber as an absorbing materials to reduce reverberation effect in closed spaces and to improve the acoustics performance of an enclosed space. This innovative acoustic absorption panel is developed and fabricated using treated coir fiber as sound absorber materials. The outer layer of the panel is fabricated from natural fiber/polyester composite. This innovative 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 absorption panel using the WinFLAGTM software. For the absorption coefficient, the experiment gives around 0.70-0.80 from the range 1000 Hz until 1800 Hz while the simulation gives 0.7 until 0.85 for the range 500 Hz until 2500 Hz. Transmission lost index gives an average of 20 dB for the panel. | ||||
Keywords | ||||
Acoustic materials; coir fiber; noise absorption coefficient; transmission lost index | ||||
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