Archives of Acoustics, 40, 4, pp. 601–608, 2015

Utilizing Hollow-Structured Bamboo as Natural Sound Absorber

1. Centre for Advanced Research on Energy, Universiti Teknikal Malaysia Melaka 4 Hang Tuah Jaya, Durian Tunggal Melaka 76100, Malaysia 2. Vibro Acoustics Research Group, Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, Durian Tunggal Melaka 76100, Malaysia

Fazlin Binti Abd KHAIR
Vibro Acoustics Research Group, Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, Durian Tunggal Melaka 76100, Malaysia

Mohd Jailani Mohd NOR
Vibro Acoustics Research Group, Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, Durian Tunggal Melaka 76100, Malaysia

Studies to find alternative low environmental-impact materials for acoustic absorbers are still progressing, particularly those originated from natural materials. However, most of the established works are mainly focused on the fibrous-type absorbers. Discussion on the non-fibrous-type absorbers is still lacking and this therefore becomes the objective of this paper. Use of bamboo by utilizing its hollow structure to absorb sound energy is discussed here. The normal incidence absorption coefficient was measured based on the length and diameter of the bamboo, as well as different arrangement of the bamboo structure subjected to the incidence sound, namely, axial, transverse, and crossed-transverse arrangements. The trend of absorption coefficient appears in peaks and dips at equally spacing frequencies. For all arrangements the peak of absorption can reach above 0.8. Introducing an air gap behind the bamboo shifts the peak absorption to lower frequency. Covering the front surface of the absorber improves the sound absorption coefficient for axial arrangement by widening the frequency range of absorption also towards lower frequency range. The transverse arrangement is found to have average absorption coefficient peaks of 0.7 above 1.5 kHz. By arranging the bamboo structure with crossed-transverse arrangement, the suppressed absorption peaks in normal transverse arrangement can be recovered.
Keywords: bamboo; hollow structure; acoustic absorber; absorption coefficient.
Full Text: PDF
Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).


Asdrubali F., Schiavoni S., Horoshenkov K.V. (2012), A review of sustainable materials for acoustic applications, Journal of Building Acoustics, 19, 4, 283–311.

Asdrubali F., D’Alessandro F., Mencarelli N., Horoshenkov K.V. (2014), Sound absorption properties of tropical plants for indoor applications, Proceedings of the 21st International Congress on Sound and Vibration, China.

Azevedo L.J., Nabuco M. (2005), Sound absorption of sisal fiber panels, Proceedings of the Congress and Exposition on Noise Control Engineering, Brazil.

Ballagh K.O. (1996), Acoustical properties of wool, Applied Acoustics, 48, 2, 101–120.

Bastos L.P., de Melo G.d.S.V., Soeiro N.S. (2012), Panels manufactured from vegetable fibers: An alternative approach for controlling noises in indoor

environments. Advances in Acoustics and Vibration, Article ID 698737, 1–9.

Eriningsih R. (2009), Ramie fiber composite and ramie waste as natural sound absorber [in Indonesia], Arena Tekstil, 2, 1, 1–59.

Ersoy S., Kucuk H. (2009), Investigation of industrial tea-leaf fibre waste material for its sound absorption properties, Applied Acoustics, 70, 1, 215–220.

Fatima S., Mohanty A.R. (2011), Acoustical and fire-retardant properties of jute composit materials, Applied Acoustics, 72, 108–114.

Fouladi M.H., Ayub Md., Nor M.J.M. (2011), Analysis of coir fiber acoustical characteristics, Applied Acoustics, 72, 35–42.

Ismail L., Ghazali M.I., Mahzan S., Zaidi A.M.A. (2010), Sound absorption of Arenga pinnata fiber, World Academy of Science, Engineering and Technology, 67, 804–806.

ISO (2011), ISO 10534-2 Acoustic determination of sound absorption coefficient and impedance tubes part 2: transfer function method.

Joshi S.V., Drzal L.T., Mohanty A.K., Arora S. (2004), Are natural fiber composites environmentally superior to glass fiber reinforced composites?, Composites, 35, 371–376.

Koizumi T., Tsujiuchi N., Adachi A. (2002), The development of sound absorbing materials using natural bamboo fibers, High Performance Structures and Materials, 4, 157–166.

Oldham D.J., Egan C.A., Cookson R.D. (2011), Sustainable acoustic absorbers from the biomass, Applied Acoustics, 72, 350–363.

Putra A., Abdullah Y., Efendy H., Farid W.M., Salleh N.L. (2013a), Biomass from paddy waste fibers as sustainable acoustic material, Advances in Acoustics and Vibration, 23, 1–7.

Putra A., Abdullah Y., Efendy H., Farid W.M., Ayob R.Md., Py M.S. (2013b), Utilizing sugarcane wasted fibers as a sustainable acoustic absorber, Procedia Engineering, 53, 632–638.

Stumpf Gonzlez M.A., Flach F., Reschke Pires J., Piva Kulakowski M. (2013), Acoustic Absorption of Mortar Composites with Waste Material,

Archives of Acoustics, 38, 3, 417–423.

Wassilieff C. (1996), Sound absorption of wood-based materials, Applied Acoustics, 48, 4, 339–356.

Yang H.S., Kim D.J., Kim H.J. (2003), Rice strawwood particle composite for sound absorbing wooden construction materials, Bioresource Technology, 86, 117–121.

Zulkifli R., Zulkarnain, Nor M.J.M. (2010), Noise control using coconut coir fiber sound absorber with porous layer backing and perforated panel, American Journal and Applied Sciences, 7, 2, 260–0264.

DOI: 10.1515/aoa-2015-0060