Automotive Noise Insulation Composite Panel Using Natural Fibres with Different Perforation Areas

Abstract:

This research was carried out to study the acoustic properties of natural organic fibres; kenaf and coir fibres using impedance tube method. Kenaf fibre was used as noise absorber filler in an insulation panel while the coir fibre as reinforcement in the perforated composite panel. The perforated panel was made from coir fibre/polyester composites with coir fibre volume fraction of 10%, 20% and 30%. The perforation area of the perforated panel was also varied at 10%, 20% and 30%. During the processing stage, the kenaf fibre sheet has been treated with PVA and cut into 100 mm and 30 mm diameter sample for low and high frequency test. The density of the coir fibre is determined to be 32.2 g/cm3 while the density of the kenaf fibre is 42.6 g/cm3. The tests were carried out using impedance tube at acoustic lab, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia using ISO 10534-2 standard for noise absorption coefficients to determine their noise absorption coefficient. The results obtained show that the optimum noise absorption coefficient index for kenaf fibre is 0.8 with 10% fibre volume fraction of coir fibre/polyester perforated composites panel at 10% perforation areas.

• Periodical: Applied Mechanics and Materials (Volume 165)
• Pages: 63-67
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.165.63
• Online since: April 2012
• Authors: Zulkifli R., T.K. Thye, Mohd Faizal Bin Mat Tahir, Ahmad Rasdan Ismail, Mohd Jailani Mohd Nor
• Keywords: Acoustic Materials, Coir Fibre, Kenaf Fiber, Noise Absorption Coefficient

References

[1] R. Zulkifli M.J. Mohd Nor, A.R. Ismail, M.Z. Nuawi, and M.F. Mat Tahir: European J. Scientific Research, 28(2) (2009), p.242.

[2] H.S. Yang, , D.J. Kim, and H.J. Kim, 86, (2003), p.117.

[3] R. Zulkifli, Zulkarnain and M.J. Mohd Nor: American J. Appl Sci, 7(2) (2010), p.260.

[4] J. Khedari, S. Charoenvai and J. Hirunlabh: Building and Environment 38 (2003), p.435.

DOI: 10.1016/s0360-1323(02)00030-6

[5] P. Wambua, J. Ivens and I. Verpoest: Compos Sci Technol 63 (2003), p.1259.

[6] T. Nishinoa, K. Hiraoa, M. Koteraa, K. Nakamaea and H. Inagakib: Comp. Sci. Tech. 63 (2003), p.1281.

[7] Zulkarnain, R. Zulkifli, and M. J. Mohd Nor: Sains Malaysiana, 40(6) (2011), p.623.

[8] W. A. Davern: Appl. Acous. 10 (1977), p.85.

[9] F. C. Lee and W. H. Chen: J. Sound. Vib. 4 (2001), p.621.