Evaluation of selected timber properties using dielectric constant by low frequency techniques / Rohana Hassan

Currently, nondestructive studies have been carried out in various fields in timber engineering. However, fewer of the research focus on non-destructive evaluation by means of electromagnetic field in low frequencies. This research is focuses on the application and development of Capacitor Probe and...

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Main Author:	Hassan, Rohana
Format:	Thesis
Language:	English
Published:	2006
Subjects:	Timber Dielectric devices
Online Access:	https://ir.uitm.edu.my/id/eprint/101807/1/101807.pdf
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id	my-uitm-ir.101807
record_format	uketd_dc
spelling	my-uitm-ir.1018072024-11-13T07:56:11Z Evaluation of selected timber properties using dielectric constant by low frequency techniques / Rohana Hassan 2006 Hassan, Rohana Timber Dielectric devices Currently, nondestructive studies have been carried out in various fields in timber engineering. However, fewer of the research focus on non-destructive evaluation by means of electromagnetic field in low frequencies. This research is focuses on the application and development of Capacitor Probe and Parallel Plate Electrode System in low frequency range of 1 kHz to 100 kHz. A Capacitor Probe and Parallel Plate Electrode System developed at Universiti Teknologi MARA were used to measure the electromagnetic property that is the dielectric constant of wood. For this study, 61 selected small-size specimens from seven strength groups of timber were taken for observation. Another 120 selected full-size specimens from Strength Group 5, 6 and 7 specified in MS 544:2001 were taken for static bending test. The experimental results proved that 100 kHz is the most suitable frequency for timber application. The dielectric constant with respect to timber grade, strength group, moisture content, density, timber defects and modulus of elasticity were discussed. The results indicated that dielectric constant has strong significance relations to the moisture content and density. Moderate relation was found between MOE and the dielectric constant. However, it shows potential for prediction of timber grade, strength group and defects detection in timber. Nonetheless, the use of the measured dielectric constant shows the ability of the approach systems in the evaluation of the properties of timber. 2006 Thesis https://ir.uitm.edu.my/id/eprint/101807/ https://ir.uitm.edu.my/id/eprint/101807/1/101807.pdf text en public masters Universiti Teknologi MARA (UiTM) Faculty of Civil Engineering
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
topic	Timber Dielectric devices
spellingShingle	Timber Dielectric devices Hassan, Rohana Evaluation of selected timber properties using dielectric constant by low frequency techniques / Rohana Hassan
description	Currently, nondestructive studies have been carried out in various fields in timber engineering. However, fewer of the research focus on non-destructive evaluation by means of electromagnetic field in low frequencies. This research is focuses on the application and development of Capacitor Probe and Parallel Plate Electrode System in low frequency range of 1 kHz to 100 kHz. A Capacitor Probe and Parallel Plate Electrode System developed at Universiti Teknologi MARA were used to measure the electromagnetic property that is the dielectric constant of wood. For this study, 61 selected small-size specimens from seven strength groups of timber were taken for observation. Another 120 selected full-size specimens from Strength Group 5, 6 and 7 specified in MS 544:2001 were taken for static bending test. The experimental results proved that 100 kHz is the most suitable frequency for timber application. The dielectric constant with respect to timber grade, strength group, moisture content, density, timber defects and modulus of elasticity were discussed. The results indicated that dielectric constant has strong significance relations to the moisture content and density. Moderate relation was found between MOE and the dielectric constant. However, it shows potential for prediction of timber grade, strength group and defects detection in timber. Nonetheless, the use of the measured dielectric constant shows the ability of the approach systems in the evaluation of the properties of timber.
format	Thesis
qualification_level	Master's degree
author	Hassan, Rohana
author_facet	Hassan, Rohana
author_sort	Hassan, Rohana
title	Evaluation of selected timber properties using dielectric constant by low frequency techniques / Rohana Hassan
title_short	Evaluation of selected timber properties using dielectric constant by low frequency techniques / Rohana Hassan
title_full	Evaluation of selected timber properties using dielectric constant by low frequency techniques / Rohana Hassan
title_fullStr	Evaluation of selected timber properties using dielectric constant by low frequency techniques / Rohana Hassan
title_full_unstemmed	Evaluation of selected timber properties using dielectric constant by low frequency techniques / Rohana Hassan
title_sort	evaluation of selected timber properties using dielectric constant by low frequency techniques / rohana hassan
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Civil Engineering
publishDate	2006
url	https://ir.uitm.edu.my/id/eprint/101807/1/101807.pdf
_version_	1818588017633263616

Evaluation of selected timber properties using dielectric constant by low frequency techniques / Rohana Hassan

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