|
|||||
|
|
Acoustic Properties of Micro-Perforated Panels Made from Oil Palm Empty Fruit Bunch Fiber Reinforced Polylactic Acid |
|
| Authors: | Vignesh Sekar Se Yong Eh Noum Azma Putra Sivakumar Sivanesan Kok Chun Chin Yi San Wong Dg Hafizah Kassim |
| Institution: | 1 School of Computer Science and Engineering, Taylor’s University, Subang Jaya, 47500, Malaysia2 Centre for Advanced Research on Energy, Universiti Teknikal Malaysia Melaka (UTeM), Melaka, 76100, Malaysia3 Fakulti Kejuruteraan Mekanikal, Universiti Teknikal Malaysia Melaka (UTeM), Melaka, 76100, Malaysia |
| 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 |
| 点击此处可从《声与振动》浏览原始摘要信息 | |
| 点击此处可从《声与振动》下载免费的PDF全文 | |