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Acoustic Properties of Micro-Perforated Panels Made from Oil Palm Empty Fruit Bunch Fiber Reinforced Polylactic Acid

Vignesh Sekar1,*, Se Yong Eh Noum1, Azma Putra2, Sivakumar Sivanesan1, Kok Chun Chin1, Yi San Wong1, Dg Hafizah Kassim3
1 School of Computer Science and Engineering, Taylor’s University, Subang Jaya, 47500, Malaysia
2 Centre for Advanced Research on Energy, Universiti Teknikal Malaysia Melaka (UTeM), Melaka, 76100, Malaysia
3 Fakulti Kejuruteraan Mekanikal, Universiti Teknikal Malaysia Melaka (UTeM), Melaka, 76100, Malaysia
* Corresponding Author: Vignesh Sekar. Email:

Sound & Vibration 2021, 55(4), 343-352. https://doi.org/10.32604/sv.2021.014916

Received 07 November 2020; Accepted 22 July 2021; Issue published 18 October 2021

Abstract

This paper presents the development and performance of micro-perforated panels (MPP) from natural fiber reinforced composites. The MPP is made of Polylactic Acid (PLA) reinforced with Oil Palm Empty Fruit Bunch Fiber (OPEFBF). The investigation was made by varying the fiber density, air gap, and perforation ratio to observe the effect on the Sound Absorption Coefficient (SAC) through the experiment in an impedance tube. It is found that the peak level of SAC is not affected, but the peak frequency shifts to lower frequency when the fiber density is increased. This phenomenon might be due to the presence of porosity in the inner wall of the holes. Increasing or decreasing the air gap and perforation ratio shifts the peaks of acoustic absorption either way.

Keywords

Acoustics; micro-perforated panel; natural fiber reinforced composite; laser cutting; impedance tube

Cite This Article

Sekar, V., Yong, S., Putra, A., Sivanesan, S., Chin, K. C. et al. (2021). Acoustic Properties of Micro-Perforated Panels Made from Oil Palm Empty Fruit Bunch Fiber Reinforced Polylactic Acid. Sound & Vibration, 55(4), 343–352.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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