Acoustic Properties of Low Density Oil Palm (Elaeis Guineensis Jacq) Fibreboard

An ultrasonic test was carried out to determine the acoustic properties of low density oil palm fibreboard. The main objective of this study was to investigate the suitability of using oil palm empty fruit bunches (EFB) as partial replacement for the acoustic materials in audio room. The board...

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Main Author:	Bokhari, Semsolbahri
Format:	Thesis
Language:	English English
Published:	2000
Subjects:	Oil palm - Fiberboard - Case studies
Online Access:	http://psasir.upm.edu.my/id/eprint/10017/1/FH_2000_5_IR.pdf
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id	my-upm-ir.10017
record_format	uketd_dc
spelling	my-upm-ir.100172023-12-06T03:06:38Z Acoustic Properties of Low Density Oil Palm (Elaeis Guineensis Jacq) Fibreboard 2000-03 Bokhari, Semsolbahri An ultrasonic test was carried out to determine the acoustic properties of low density oil palm fibreboard. The main objective of this study was to investigate the suitability of using oil palm empty fruit bunches (EFB) as partial replacement for the acoustic materials in audio room. The board was manufactured by using rubberwood (Hevea bracilliensis) and oil palm (Elaeis guineensis, Jacq). The rubberwood was used as the control. Three levels of board density and five thicknesses were used to investigate the relationship of acoustic parameters (wave velocity and attenuation coefficient) to these independent variables. In addition, this study consisted of two sub-studies; (i) the effect of resin content on the acoustic properties, and (ii) the trend of pulse velocity travelling through the boards of different thicknesses. The result showed that the acoustic properties of oil palm boards were significantly affected by a variation in board densities and thicknesses, as well as resin content. On the other hand, it was found that the velocity of pulse was influenced by the variation in the resin content, thickness and density of the boards. The pulse velocity, which travels through the EFB, was similar to that of rubberwood boards, suggesting that the acoustic properties of EFB were in the same class as that of rubberwood. The board with 12 mm thickness was found to be able to absorb more pulse wave than the board of other thicknesses for each type of board density. Based on the result, the low density oil palm fibreboard was suitable to be used as a core layer for building a wall in audio room. However, it needs further improvement on it's design and structure to have a better performance as the absorbent materials. This study also found that the ultrasonic test could be a good non-destructive test method to assess the acoustic properties. Oil palm - Fiberboard - Case studies 2000-03 Thesis http://psasir.upm.edu.my/id/eprint/10017/ http://psasir.upm.edu.my/id/eprint/10017/1/FH_2000_5_IR.pdf text en public masters Universiti Putra Malaysia Oil palm - Fiberboard - Case studies Faculty of Forestry Jamaludin, Mohd. Ariff English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
advisor	Jamaludin, Mohd. Ariff
topic	Oil palm - Fiberboard - Case studies
spellingShingle	Oil palm - Fiberboard - Case studies Bokhari, Semsolbahri Acoustic Properties of Low Density Oil Palm (Elaeis Guineensis Jacq) Fibreboard
description	An ultrasonic test was carried out to determine the acoustic properties of low density oil palm fibreboard. The main objective of this study was to investigate the suitability of using oil palm empty fruit bunches (EFB) as partial replacement for the acoustic materials in audio room. The board was manufactured by using rubberwood (Hevea bracilliensis) and oil palm (Elaeis guineensis, Jacq). The rubberwood was used as the control. Three levels of board density and five thicknesses were used to investigate the relationship of acoustic parameters (wave velocity and attenuation coefficient) to these independent variables. In addition, this study consisted of two sub-studies; (i) the effect of resin content on the acoustic properties, and (ii) the trend of pulse velocity travelling through the boards of different thicknesses. The result showed that the acoustic properties of oil palm boards were significantly affected by a variation in board densities and thicknesses, as well as resin content. On the other hand, it was found that the velocity of pulse was influenced by the variation in the resin content, thickness and density of the boards. The pulse velocity, which travels through the EFB, was similar to that of rubberwood boards, suggesting that the acoustic properties of EFB were in the same class as that of rubberwood. The board with 12 mm thickness was found to be able to absorb more pulse wave than the board of other thicknesses for each type of board density. Based on the result, the low density oil palm fibreboard was suitable to be used as a core layer for building a wall in audio room. However, it needs further improvement on it's design and structure to have a better performance as the absorbent materials. This study also found that the ultrasonic test could be a good non-destructive test method to assess the acoustic properties.
format	Thesis
qualification_level	Master's degree
author	Bokhari, Semsolbahri
author_facet	Bokhari, Semsolbahri
author_sort	Bokhari, Semsolbahri
title	Acoustic Properties of Low Density Oil Palm (Elaeis Guineensis Jacq) Fibreboard
title_short	Acoustic Properties of Low Density Oil Palm (Elaeis Guineensis Jacq) Fibreboard
title_full	Acoustic Properties of Low Density Oil Palm (Elaeis Guineensis Jacq) Fibreboard
title_fullStr	Acoustic Properties of Low Density Oil Palm (Elaeis Guineensis Jacq) Fibreboard
title_full_unstemmed	Acoustic Properties of Low Density Oil Palm (Elaeis Guineensis Jacq) Fibreboard
title_sort	acoustic properties of low density oil palm (elaeis guineensis jacq) fibreboard
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Forestry
publishDate	2000
url	http://psasir.upm.edu.my/id/eprint/10017/1/FH_2000_5_IR.pdf
_version_	1794018857425305600

Acoustic Properties of Low Density Oil Palm (Elaeis Guineensis Jacq) Fibreboard

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