Application of microwave in wood tomography

Wood degradation and defects, such as voids and knots, affect the quality of lumber. The ability to detect the internal defects in the log can save mills time and processing costs. In this case, the microwave propagation is used to investigate the internal defect of wood. The principle of this case...

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Main Author:	A. Jalil @ Zainuddin, Mohd. Hafiz
Format:	Thesis
Language:	English
Published:	2005
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/5327/1/MohdHafizAJalilMFKE2005.pdf
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id	my-utm-ep.5327
record_format	uketd_dc
spelling	my-utm-ep.53272018-03-07T20:56:38Z Application of microwave in wood tomography 2005-11 A. Jalil @ Zainuddin, Mohd. Hafiz TK Electrical engineering. Electronics Nuclear engineering Wood degradation and defects, such as voids and knots, affect the quality of lumber. The ability to detect the internal defects in the log can save mills time and processing costs. In this case, the microwave propagation is used to investigate the internal defect of wood. The principle of this case study is to measure the attenuation of microwave signal when propagates through the wood. The microwave trainer Type (e) 4510 that transmit 14.5 GHz with 20mW microwave signal is used and the measurements are made in voltage using multi-meter that connected with detector. The development of amplification circuit has been developed to amplify the received signal from detector. Rubber wood is used as material under test, (MUT) with thickness used between 20mm to 60mm. The wood defection is created with known size and the wood is immersed in water in order to study the effect of moisture content on microwave signal. Several experiments must be performed with several samples of woods and results of measurement must be studied in order to determine the different measurement between the defect wood and good wood. Artificial Neural Network (ANN) is applied in Visual Basic to recognize the pattern voltage based on experiment data to develop 2D image and determine the internal characteristic of wood. All data presented are based on experiment results. The results from this work will determine the suitability to use microwave signal in wood scanning. 2005-11 Thesis http://eprints.utm.my/id/eprint/5327/ http://eprints.utm.my/id/eprint/5327/1/MohdHafizAJalilMFKE2005.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering A. Jalil @ Zainuddin, Mohd. Hafiz Application of microwave in wood tomography
description	Wood degradation and defects, such as voids and knots, affect the quality of lumber. The ability to detect the internal defects in the log can save mills time and processing costs. In this case, the microwave propagation is used to investigate the internal defect of wood. The principle of this case study is to measure the attenuation of microwave signal when propagates through the wood. The microwave trainer Type (e) 4510 that transmit 14.5 GHz with 20mW microwave signal is used and the measurements are made in voltage using multi-meter that connected with detector. The development of amplification circuit has been developed to amplify the received signal from detector. Rubber wood is used as material under test, (MUT) with thickness used between 20mm to 60mm. The wood defection is created with known size and the wood is immersed in water in order to study the effect of moisture content on microwave signal. Several experiments must be performed with several samples of woods and results of measurement must be studied in order to determine the different measurement between the defect wood and good wood. Artificial Neural Network (ANN) is applied in Visual Basic to recognize the pattern voltage based on experiment data to develop 2D image and determine the internal characteristic of wood. All data presented are based on experiment results. The results from this work will determine the suitability to use microwave signal in wood scanning.
format	Thesis
qualification_level	Master's degree
author	A. Jalil @ Zainuddin, Mohd. Hafiz
author_facet	A. Jalil @ Zainuddin, Mohd. Hafiz
author_sort	A. Jalil @ Zainuddin, Mohd. Hafiz
title	Application of microwave in wood tomography
title_short	Application of microwave in wood tomography
title_full	Application of microwave in wood tomography
title_fullStr	Application of microwave in wood tomography
title_full_unstemmed	Application of microwave in wood tomography
title_sort	application of microwave in wood tomography
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2005
url	http://eprints.utm.my/id/eprint/5327/1/MohdHafizAJalilMFKE2005.pdf
_version_	1747814580517601280

Application of microwave in wood tomography

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