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Investigation on sound absorption of rice-husk reinforced composite

Mahzan, Shahruddin and Ahmad Zaidi , Ahmad Mujahid and Ghazali, Mohd Imran and Yahya, Musli Nizam and Ismail, Maziah Investigation on sound absorption of rice-husk reinforced composite. In: The 3rd Malaysian Technical Universities Conference on Engineering and Technology (MUCEET2009), 20-22 June 2009, Kuantan, Pahang.


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Natural fibres have become an important element in producing alternative fibrereinforced composites. The use of natural fibre for sound absorber material has recently investigated. This study investigates the use of rice-husk waste as the potential element for sound absorption material of rice-husk reinforced composite. The rice husk is initially cleaned and dried up at room temperature (25 - 30 ºC). The dried rice husk is then mixed together with Polyurethane (PU) foam as a binder to produce the rice husk reinforced composite. Six different samples have been produced according to the percentage of rice husk. The specimens were tested using an impedance tube. The result found that the best percentage of rice husk was obtained at 25 percents. The sound absorption coefficient obtained demonstrated that the mixture produced the best performance at low frequency region. The results also demonstrated that the rice husk reinforced composite have a better sound coefficient compared to other natural materials, hence promising a great potential for commercialisation.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: composite sound absorber; natural fibre; rice husk; sound absorption coefficient
Subjects: Q Science > QC Physics
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Engineering Mechanics
Depositing User: Normajihan Abd. Rahman
Date Deposited: 23 Nov 2012 10:09
Last Modified: 23 Nov 2012 10:09
URI: http://eprints.uthm.edu.my/id/eprint/2839
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