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...

Full description

Saved in:
Bibliographic Details
Main Author: A. Jalil @ Zainuddin, Mohd Hafiz
Format: Thesis
Language:English
Published: 2005
Subjects:
Online Access:http://eprints.uthm.edu.my/7674/1/24p%20MOHD%20HAFIZ%20A.%20JALIL%20%40%20ZAINUDDIN.pdf
Tags: Add Tag
No Tags, Be the first to tag this record!
id my-uthm-ep.7674
record_format uketd_dc
spelling my-uthm-ep.76742022-09-08T02:48:18Z Application of microwave in wood tomography 2005-11 A. Jalil @ Zainuddin, Mohd Hafiz TK Electrical engineering. Electronics Nuclear engineering TK7800-8360 Electronics 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 20m W 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, (rvlUT) 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.uthm.edu.my/7674/ http://eprints.uthm.edu.my/7674/1/24p%20MOHD%20HAFIZ%20A.%20JALIL%20%40%20ZAINUDDIN.pdf text en public mphil masters Universiti Teknologi Malaysia Fakulti Kejuruteraan Elektrik
institution Universiti Tun Hussein Onn Malaysia
collection UTHM Institutional Repository
language English
topic TK Electrical engineering
Electronics Nuclear engineering
TK7800-8360 Electronics
spellingShingle TK Electrical engineering
Electronics Nuclear engineering
TK7800-8360 Electronics
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 20m W 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, (rvlUT) 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_name Master of Philosophy (M.Phil.)
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
granting_department Fakulti Kejuruteraan Elektrik
publishDate 2005
url http://eprints.uthm.edu.my/7674/1/24p%20MOHD%20HAFIZ%20A.%20JALIL%20%40%20ZAINUDDIN.pdf
_version_ 1747831178539302912