Detection of corrosion under a thin layer of paint using microwave non-destructive (MNDT) testing at frequency 17.5 GHz TO 28GHz (K-BAND) / Normunira Aini Zulkifli

The Vector Network Analyzer is used to measure the complex reflection coefficient (real and imaginary). By using free-space method, the dielectric properties for the samples of Aluminium Alloy were measured. The complex reflection coefficient (Sn) for the 10 samples of corrosion and non-corrosion Al...

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Main Author:	Zulkifli, Normunira Aini
Format:	Thesis
Language:	English
Published:	2009
Subjects:	Microwave communication systems
Online Access:	https://ir.uitm.edu.my/id/eprint/67867/1/67867.pdf
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id	my-uitm-ir.67867
record_format	uketd_dc
spelling	my-uitm-ir.678672023-05-08T04:00:18Z Detection of corrosion under a thin layer of paint using microwave non-destructive (MNDT) testing at frequency 17.5 GHz TO 28GHz (K-BAND) / Normunira Aini Zulkifli 2009 Zulkifli, Normunira Aini Microwave communication systems Microwaves. Including microwave circuits The Vector Network Analyzer is used to measure the complex reflection coefficient (real and imaginary). By using free-space method, the dielectric properties for the samples of Aluminium Alloy were measured. The complex reflection coefficient (Sn) for the 10 samples of corrosion and non-corrosion Aluminum Alloy were measured. The dielectric constants and loss fact were measured for the non-corrosion and the corrosion metals in the frequency range of 17.5 to 28 GHz (K-Band). From the measurements results, the dielectric properties for corrosion metals are higher than the non-corrosion metals. The ranges of dielectric constant for corrosion metals are from 2.7750 to 2.9461 while the value of dielectric constant for non-corrosion metals are 2.4021 to 2.4901. Therefore, we can distinguish whether the metal is corroded or not. The thru, reflect and line (TRL) calibration technique were used to eliminate the effect of undesirable multiple reflection. For thin samples, the sample had to be sandwiched between two half-wavelength Teflon™ planes, to eliminate the effect of sagging. The measurement system consists of Vector Network Analyzer (VNA), a pair of spot focusing horn lens antenna, mode transitions, coaxial cable and computer. A computer program, FORTRAN was used for calculation of dielectric constant. Data from VNA measurement is the input to this program. 2009 Thesis https://ir.uitm.edu.my/id/eprint/67867/ https://ir.uitm.edu.my/id/eprint/67867/1/67867.pdf text en public degree Universiti Teknologi MARA (UiTM) Faculty of Electrical Engineering Khadri, Norasimah
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Khadri, Norasimah
topic	Microwave communication systems Microwave communication systems
spellingShingle	Microwave communication systems Microwave communication systems Zulkifli, Normunira Aini Detection of corrosion under a thin layer of paint using microwave non-destructive (MNDT) testing at frequency 17.5 GHz TO 28GHz (K-BAND) / Normunira Aini Zulkifli
description	The Vector Network Analyzer is used to measure the complex reflection coefficient (real and imaginary). By using free-space method, the dielectric properties for the samples of Aluminium Alloy were measured. The complex reflection coefficient (Sn) for the 10 samples of corrosion and non-corrosion Aluminum Alloy were measured. The dielectric constants and loss fact were measured for the non-corrosion and the corrosion metals in the frequency range of 17.5 to 28 GHz (K-Band). From the measurements results, the dielectric properties for corrosion metals are higher than the non-corrosion metals. The ranges of dielectric constant for corrosion metals are from 2.7750 to 2.9461 while the value of dielectric constant for non-corrosion metals are 2.4021 to 2.4901. Therefore, we can distinguish whether the metal is corroded or not. The thru, reflect and line (TRL) calibration technique were used to eliminate the effect of undesirable multiple reflection. For thin samples, the sample had to be sandwiched between two half-wavelength Teflon™ planes, to eliminate the effect of sagging. The measurement system consists of Vector Network Analyzer (VNA), a pair of spot focusing horn lens antenna, mode transitions, coaxial cable and computer. A computer program, FORTRAN was used for calculation of dielectric constant. Data from VNA measurement is the input to this program.
format	Thesis
qualification_level	Bachelor degree
author	Zulkifli, Normunira Aini
author_facet	Zulkifli, Normunira Aini
author_sort	Zulkifli, Normunira Aini
title	Detection of corrosion under a thin layer of paint using microwave non-destructive (MNDT) testing at frequency 17.5 GHz TO 28GHz (K-BAND) / Normunira Aini Zulkifli
title_short	Detection of corrosion under a thin layer of paint using microwave non-destructive (MNDT) testing at frequency 17.5 GHz TO 28GHz (K-BAND) / Normunira Aini Zulkifli
title_full	Detection of corrosion under a thin layer of paint using microwave non-destructive (MNDT) testing at frequency 17.5 GHz TO 28GHz (K-BAND) / Normunira Aini Zulkifli
title_fullStr	Detection of corrosion under a thin layer of paint using microwave non-destructive (MNDT) testing at frequency 17.5 GHz TO 28GHz (K-BAND) / Normunira Aini Zulkifli
title_full_unstemmed	Detection of corrosion under a thin layer of paint using microwave non-destructive (MNDT) testing at frequency 17.5 GHz TO 28GHz (K-BAND) / Normunira Aini Zulkifli
title_sort	detection of corrosion under a thin layer of paint using microwave non-destructive (mndt) testing at frequency 17.5 ghz to 28ghz (k-band) / normunira aini zulkifli
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Electrical Engineering
publishDate	2009
url	https://ir.uitm.edu.my/id/eprint/67867/1/67867.pdf
_version_	1783735738820460544

Detection of corrosion under a thin layer of paint using microwave non-destructive (MNDT) testing at frequency 17.5 GHz TO 28GHz (K-BAND) / Normunira Aini Zulkifli

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