Acoustic Properties of Mixing Empty Fruit Bunch and Oil Palm Frond Natural Fibres

Mageswaran, R.; Sheng, Ewe Lay; Yew, W. K.; Ibrahim, Zelina Zaiton

doi:10.35940/ijrte.d5119.118419

Cited by 4 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Untreated Jute fibers showed an increasing trend of SAC from 0.38 to 0.95 with increasing in fiber length (5 mm to 20 mm) [11]. In addition, according to R. Mageswaran, et al, [12], a combination of EFB and OPF showed promising SAC value from 0.81-0.98 with a frequency range of 4000 -6400 Hz [12].…”

Section: Introductionmentioning

confidence: 88%

Enhancement of Acoustic Performance of Oil Palm Frond Natural Fibers by Substitution of Jute Fiber

Nasir¹,

Sheng²,

Kean³

et al. 2021

ARMS

View full text Add to dashboard Cite

Noise is defined as an unpleasant or loud sound, which may cause disturbance to others. It can damage an inner ear and even cause noise-induced hearing loss, threatening health and well-being. Researchers have successfully studied and invented many different types, shapes, and sizes of sound absorbers to absorb/control unwanted noises. A simple method used to control noise is by controlling the noise source using acoustic absorption panels, reducing noise along the transmission path, and protecting the noise at the receiving end before it reaches the receiver. Presently, the market or in most developed countries uses synthetic materials for buildings to absorb sound. The commonly used synthetic materials are glass or mineral fibers as they can be produced chemically in the factory very quickly. However, materials such as foam, rock wool, and glass wool made from minerals are recognized for their poisonous and polluting effects, which are harmful to human health and the environment. This paper reported the effect of substitution of Jute on the acoustic performance of Oil Palm Frond (OPF) natural fibers (150 kg/m3) with a thickness of 19 mm. Jute is suitable for insulating, antistatic, and low thermal conductivity. It also has a promising result of sound absorption coefficient (SAC) at lower frequency range (50 - 1000 Hz), and on the contrary for OPF, the SAC is only promising at higher frequency range (2000 Hz - 6400 Hz). Thus, it will be very remarkable to study these two blending fibers' acoustic performance. The findings show the substitution of Jute to broaden the frequency range of SAC above 0.8. For 20 % of jute substitution, SAC's frequency range above 0.8 is 1600 – 6400 Hz. Whereas for both 40 % and 60 % of jute substitution, the frequency range is marginally widened to 1400 – 6400 Hz. For 80 % of jute substitution, the frequency range of SAC above 0.8 has been increased to 1000 – 6400 Hz. An impressive result has been observed, where 100 % OPF unable to reach the SAC of 0.9 throughout the frequency range of 0 – 6400 Hz. Jute has proved its ability to improve its acoustic performance at a more comprehensive frequency range.

show abstract

Section: Introductionmentioning

confidence: 88%

Enhancement of Acoustic Performance of Oil Palm Frond Natural Fibers by Substitution of Jute Fiber

Nasir¹,

Sheng²,

Kean³

et al. 2021

ARMS

View full text Add to dashboard Cite

show abstract

“…1 to Fig. 7 show the dry LDF fabrication process, which involved chipping, refining, glue bending, mat-forming, pre-press, hot press, and cool-down process [8,17]. The density used in this research is 120 kg/m 3 .…”

Section: Methodsmentioning

confidence: 99%

“…They are renewable, biodegradable and most important of all, it is safe and healthy to humans and surrounding [8]. Some of the natural fibre that has been tested for their acoustic properties are kenaf [9], sugar palm [10], coconut [11], kapok [12], bamboo [13], OPF [14], OPT [15], etc.…”

Section: Introductionmentioning

confidence: 99%

Acoustic Performance Mixture of Natural Fibres of Oil Palm Frond (OPF) and Empty Fruit Bunch (EFB)

Chandran

Sheng

Kean

et al. 2021

SSP

View full text Add to dashboard Cite

The expansion of the oil palm industry has affected the environment and the poor handling of oil palm waste has greatly endangered the habitat surrounds it. The oil palm natural fibre waste can be put to good use and used as a sound absorber for its amazing acoustic properties. At the same time, the demand for natural fibre sound-absorbing panels is increasing due to its low-cost fabrication and its healthier than synthetic fibre. This research has studied the acoustic properties of mixing Empty Fruit Bunch (EFB) and Oil Palm Frond (OPF) in a thickness of 12 mm, 14 mm, 16 mm, and 18 mm. The fibreboard has been fabricated at a density of 120 kg/m3. The Sound Absorption Coefficient, SAC, and morphologies of all the samples were examined using the Impedance Tube Method (ITM) and Scanning Electron Microscope, (SEM). The sample’s SAC value increased with thickness. It is noteworthy that this combination percentage of natural fibres of EFB and OPF show good acoustic performance where the SAC values above 0.8 at wide frequency 3000 - 6400 Hz. Sample thickness 14 mm, 18 mm achieved unity (1.0) at frequency 4000 - 5500 Hz. In addition, all the samples were found to exceed 90 % of the absorption rate in the range of 4500 - 6400 Hz. The morphology content of EFB and OPF helps in enhancing the absorption rate.

show abstract

“…According to a study conducted by R. Mageswaran et al, the fibreboard made with a combination of an empty fruit bunch and oil palm fronds exhibited good acoustic characteristics [9]. The study conducted by David J. Oldham et al revealed that natural fibres with small diameters are proved to be the best sound absorbers.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Sound Absorption Coefficient – Acoustic Properties of Pattamadai mat

Kalaiselvi¹,

John²,

Raj

2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Noise has become one of the most critical problems to address in contemporary cities, and the awareness of the consequences of noise pollution has been increasing lately. Road traffic noise exposure is considered a serious environmental health hazard, as excessive exposure to noise increases cardiovascular diseases and anxiety. People spend most of their time in residences where they become tolerant of noisy environments and are unaware of the effects caused by them. Indoor acoustic comfort in residences is one of the unexplored parts of Indoor environmental quality (IEQ). Achieving sufficient acoustic comfort is of the main priorities in achieving IEQ. Facades are the constructive elements which act as a barrier between outdoor and indoor sound transmission. The main aim of this research is to optimize the characteristics of different elements of the façade of a residential building to enhance indoor acoustic comfort. A case study residence is chosen at Guindy, Chennai, to study the outdoor sound pattern and the corresponding indoor sound level. The outdoor sound level is measured continuously at 1 m from the facade. The indoor sound level is measured at the centre of each room at regular time intervals. Field measurements were conducted in the 2 BHK apartment, and the results were processed to assign each room's acoustic class and determine the residence’s Key Performance Index in terms of acoustic comfort. The results of this research will be optimized in the upcoming research phase using Pachyderm (Grasshopper plugin) to find the best design parameters for the facade to achieve good acoustic comfort in a residence.

show abstract

Acoustic Properties of Mixing Empty Fruit Bunch and Oil Palm Frond Natural Fibres

Cited by 4 publications

References 7 publications

Enhancement of Acoustic Performance of Oil Palm Frond Natural Fibers by Substitution of Jute Fiber

Enhancement of Acoustic Performance of Oil Palm Frond Natural Fibers by Substitution of Jute Fiber

Acoustic Performance Mixture of Natural Fibres of Oil Palm Frond (OPF) and Empty Fruit Bunch (EFB)

Evaluation of Sound Absorption Coefficient – Acoustic Properties of Pattamadai mat

Contact Info

Product

Resources

About