Investigation of Depth Variations of the Bamboo Twigs for its Acoustical Performance

Abstract:

This study aims to determine the relationship between variations in the depth of bamboo twigs with the sound absorption coefficient. The sample consisted of 12 bamboo twigs made up of three types of depth variations. Measurement of sound absorption of bamboo twigs using two microphone impedance tubes and B & K Lab shop software version 16. Standardization ISO 10534-2:1998 [1] was used to test parameters between 100 and 1600 Hz. This type of research is a comparative quantitative approach, data processing using Pulse Lab shop version 16 and visualized into a curve graph using Microsoft Excel. The results showed that the bamboo twig material with a depth of 50 mm was better than 25 mm with an absorption coefficient (α) of 0,68 at a frequency of 1600 Hz. While the material with a thickness of 75 mm only absorbs at a frequency of 1100 Hz with a maximum absorption coefficient of 0,57. According to ISO 11654 [2], it shows that bamboo twigs have the potential to be used as sound-absorbing materials. The sound absorption coefficient value of bamboo twigs rises from low to high frequency with increasing twig depth.

• Periodical: Materials Science Forum (Volume 1091)
• Pages: 127-133
• DOI: https://doi.org/10.4028/p-e2nzsn
• Online since: June 2023
• Authors: Aan Kurniawan, Asniawaty Kusno*, Rosady Mulyadi
• Keywords: Bamboo Twig, Gigantochloa Apus, Impedance Tube, Sound Absorption

References

[1] L. Karlinasari, D. Hermawan, A. Maddu, B. Martianto, I.K. Lucky, N. Nugroho, Y.S. Hadi, Acoustical properties of particleboards made from betung bamboo (Dendrocalamus asper) as building construction material, BioResources. 7 (2012) 5700–5709.

DOI: 10.15376/biores.7.4.5700-5709

[2] A. Putra, F.A. Khair, M.J.M. Nor, Utilizing Hollow-Structured Bamboo as Natural Sound Absorber, Archives of Acoustics. 40 (2015) 601–608.

DOI: 10.1515/aoa-2015-0060

[3] S. Chen, Y. Jiang, The acoustic property study of polyurethane foam with addition of bamboo leaves particles, Polymer Composites. 39 (2018) 1370–1381.

DOI: 10.1002/pc.24078

[4] T. Koizumi, N. Tsujiuchi, K. Fujita, Performance improvement of sound-absorbing materials using natural bamboo fibers and their application, WIT Press, 2004.

[5] E. I Gusti Lanang Bagus, Bamboo Structure and Engineering, 1st ed., National Education University, Denpasar Bali, 2017.

[6] L. W., Anatomy and properties of bamboo., GTZ Publication. (1986) 196–207.

[7] F.A. Khair, P. Azma, J.M. Mohd Nor, N. Atiqah, M.Z. Selamat, Preliminary study on bamboo as sound absorber, Applied Mechanics and Materials. 554 (2014) 76–80.

DOI: 10.4028/www.scientific.net/amm.554.76

[8] S.H. Lee, S. Wang, Biodegradable polymers/bamboo fiber biocomposite with bio-based coupling agent, Composites Part A: Applied Science and Manufacturing. 37 (2006) 80–91.

DOI: 10.1016/j.compositesa.2005.04.015

[9] I.B.K. Arinasa, I.. N. Peneng, Types of Bamboo in Bali and Its Potential., 1st ed., LIPI Press, 2013.

[10] A. Kusno, K. Sakagami, T. Okuzono, M. Toyoda, T. Otsuru, R. Mulyadi, K. Kamil, A pilot study on the sound absorption characteristics of chicken feathers as an alternative sustainable acoustical material, Sustainability (Switzerland). 11 (2019) 1–11.

DOI: 10.3390/su11051476

[11] A. Kusno, M.T. Ishak, R. Rahim, B. Hamzah, R. Mulyadi, N. Jamala, R. Anggraeni, Coconut Leaf Midribs as an Acoustical Panel-Feasibility Study through Impedance Tube Method, in: IOP Conf. Ser. Mater. Sci. Eng., 2020: p.1–9.

DOI: 10.1088/1757-899x/875/1/012007

[12] I. Ismail, Preservative properties of seawater in ampelous bamboo using the Boucherie-Morisco method, Gadjah Mada University, 2009.

[13] Team Elsspat, Preservation of Wood and Bamboo, 1st ed., Dinamika Media, Jakarta, 2007.

[14] J. Niresh, S. Neelakrishna, S. Subharan, R. Prabhakaran, Performance Testing for Sound Absorption Coefficient by Using Impedance Tube, Research Journal of Applied Sciences, Engineering and Technology. 11 (2015) 185–189.

DOI: 10.19026/rjaset.11.1706

[15] I. Standard, ISO 10534-2:1998 Acoustics — Determination of sound absorption coefficient and impedance in impedance tubes — Part 2: Transfer-function method, (1998).

DOI: 10.3403/02552411u

[16] S. Hasniati Hasan, S. Zelviani, Testing of Density and Water Content as on Acoustic Boards Made from Pandanus Tectorius Leaves, Jft. 6 (2019) 113–120.