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Vol.5 , No. 1, Publication Date: Feb. 1, 2018, Page: 17-23
 Natural Fiber&description=Natural fibers are being widely studied as an alternative option of acoustic absorption material. It is well known that natural fiber has less health concern on human and no harm to the environment. Oil Palm Trunk (OPT) is an abundantly available resource that can be used as a substitution to synthetic material. The objective of this study was to examine the potential of OPT natural fiber as sound absorption material. The OPT natural fibers were fabricated in three different densities; 100 kg/m<sup>3</sup>, 200 kg/m<sup>3</sup> and 300 kg/m<sup>3</sup> and three different thickness; 8 mm, 12 mm and 16 mm. Fiberboards were fabricated using Low-Density Fiberboard (LDF) method with Urea Formaldehyde (UF) as binder. Sound Absorption Coefficient (SAC, α) of the samples were measured using Impedance Tube Method (ITM) at frequency range of 0 Hz to 6400 Hz. The results show that all OPT fiberboard has a very good sound absorption level with a minimum SAC, α of 0.6 at frequency below 1000 Hz. The samples also show a constant increment at a high-frequency range from 3000 Hz to 6000 Hz. OPT fiberboard with density of 100 kg/m<sup>3</sup> and thickness of 12 mm possessed the highest performance of SAC, α = 0.99 which almost reach unity at frequencies of 3000 Hz, 6000 Hz and 6400 Hz. OPT is a biodegradable material that is very much suitable to be used as an acoustical material.&picture=http://www.aascit.org/aascit/decorators/img/journal/924.jpg)
| [1] | Kalaivani Rajendran, College of Engineering, Universiti Tenaga Nasional (UNITEN), Putrajaya Campus, Selangor, Malaysia. |
| [2] | Ewe Lay Sheng, College of Engineering, Universiti Tenaga Nasional (UNITEN), Putrajaya Campus, Selangor, Malaysia. |
| [3] | Zawawi Ibrahim, Engineering and Processing Division, Malaysian Palm Oil Board (MPOB), Selangor, Malaysia. |
Natural fibers are being widely studied as an alternative option of acoustic absorption material. It is well known that natural fiber has less health concern on human and no harm to the environment. Oil Palm Trunk (OPT) is an abundantly available resource that can be used as a substitution to synthetic material. The objective of this study was to examine the potential of OPT natural fiber as sound absorption material. The OPT natural fibers were fabricated in three different densities; 100 kg/m3, 200 kg/m3 and 300 kg/m3 and three different thickness; 8 mm, 12 mm and 16 mm. Fiberboards were fabricated using Low-Density Fiberboard (LDF) method with Urea Formaldehyde (UF) as binder. Sound Absorption Coefficient (SAC, α) of the samples were measured using Impedance Tube Method (ITM) at frequency range of 0 Hz to 6400 Hz. The results show that all OPT fiberboard has a very good sound absorption level with a minimum SAC, α of 0.6 at frequency below 1000 Hz. The samples also show a constant increment at a high-frequency range from 3000 Hz to 6000 Hz. OPT fiberboard with density of 100 kg/m3 and thickness of 12 mm possessed the highest performance of SAC, α = 0.99 which almost reach unity at frequencies of 3000 Hz, 6000 Hz and 6400 Hz. OPT is a biodegradable material that is very much suitable to be used as an acoustical material.
Keywords
Oil Palm Trunk (OPT), Natural Fiber, Sound Absorption Coefficient (SAC, α)
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