Investigation on Sound Absorption Coefficients of Betel Nut Fiber Reinforced Polymer Matrix Composites

Abstract:

This research investigates the sound absorption coefficients of betel nut fibers (Areca Fibers) reinforced with thermoplastic (Polypropylene) and thermoset (Unsaturated polyester) matrix composites with different fiber loadings and frequencies. In this research we used 5%, 10%, 15%, and 20% of betel nut fibers in the polymer matrix and the test frequencies are from 400 Hz to 1800 Hz. There are two standardized methods used for measuring the normal incidence sound absorption coefficient of composites namely, standing wave method (ISO 10534-1) and two fixed microphone method (ISO 10534-2). From this research, betel nut fibers reinforced with polymer matrix composites have good sound absorption coefficients at high frequency although the overall sound absorption coefficient is quiet low. The Increase in fiber loading increases the sound absorption coefficients of composites. The types of polymer did not have significant influences on sound absorption coefficients. Both methods of measurement show the same results where the two fixed microphone method is much quicker than standing wave method.

• Periodical: Applied Mechanics and Materials (Volumes 465-466)
• Pages: 901-905
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.465-466.901
• Online since: December 2013
• Authors: Elammaran Jayamani*, Pushparaj Ezhumalai, Sinin Hamdan, M. Rezaur Rahman
• Keywords: Betel Nut Fiber, Composite, Impedance Tube, Sound Absorption Coefficient

References

[1] Rozli Zulkifli, Zulkarnain, Mohd Nor and Mohd Jailani, Noise control using coconut coir fiber sound absorber with porous layer backing and perforated panel, American Journal of Applied sciences 7 (2), (2006), 260-264.

DOI: 10.3844/ajassp.2010.260.264

[2] Y. Mohd Yuhazri, A.M. Kamarul, Haeryip Sihambing, A.R. Jeefferie and Haidir, The potential of agriculture waste material for noise insulator application toward green design and material, International Journal of Civil & Environmental Engineering IJCEE-IJENS, Vol: 10 No: 05, (2008).

[3] Hoda S. Seddeq, Nermin Aly, Ali Marwa A and M H Elshakankery, Investigation on sound absorption properties for recycled fibrous materials, Journal of Industrial textiles, 0 (00) 1 – 18, (2012).

DOI: 10.1177/1528083712446956

[4] Ancuta Borlea, Tiberiu Rusu, Silviu Ionescu, Mihaiella Cretu and Adina Ionescu, Acoustical Materials – sound absorbing materials made of pine sawdust, Romanian Journal of Acoustics and Vibration, vol 8, (2011).

[5] Hoda S. Seddeq, Factors influencing acoustic performance of sound absorptive materials, Australian Journal of Basic and applied sciences, 3(4), (2009), 4610-4617.

[6] X. Sagartzazu, L. Hervella - Nieto, and J.M. Pagalday, Review in sound absorbing materials, Arch. Comput Methods Eng (2008) 15: 311-342.

DOI: 10.1007/s11831-008-9022-1

[7] P. Jorge, Arenas, J. Malcolm Crocker, Recent trends in porous sound-absorbing materials, Sound and Vibration, (2010).

[8] Lindawati Iamail, Mohd. Imran Ghazali, Sound absorption of Arenga pinnata Natural fiber, World academy of science, Engineering and Technology, 67 (2010).

[9] C.N. Wang, J.H. Torng, Experimental study of the absorption characteristic of some porous fibrous materials, Applied Acoustics (2001) 62: 447-459.

DOI: 10.1016/s0003-682x(00)00043-8

[10] J. Khedari, S. Charoenvai, J. Hirunlabh, New insulating particleboards from durian peel and coconut coir, Build. Environ (2003) 38: 435-441.

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

[11] Zulkifli, Effect of perforated size and air gap thickness on acoustic properties of coir fiber sound absorption, European Journal of Scientific Research. (2008) 28: 242-252.

[12] H.S. Yang, D.J. Kim, H.J. Kim, Rice straw wood particle composite for sound absorbing wooden construction materials, Bioresour. Technol. (2003) 86: 117-121.

DOI: 10.1016/s0960-8524(02)00163-3

[13] F. Alton Everest, Fundamental of sound, absorption of sound: "The Master Handbook of Acoustics, third ed., McGraw-Hill, United States, (1994).