Development of eddy current testing instrument on metal testing for non-destructive testing applications

Eddy current facilities are rapidly developing in the field of industry and the effectiveness of the eddy current testing (ECT) instrument is well established on market and yet, the instruments were very expensive and hard to get in this country. Moreover, the optimization for the specification of m...

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Main Author:	Elva Alias
Format:	Thesis
Language:	English English
Published:	2019
Subjects:	TA401-492 Materials of engineering and construction Mechanics of materials
Online Access:	https://eprints.ums.edu.my/id/eprint/41649/1/ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/41649/2/FULLTEXT.pdf
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spelling	my-ums-ep.416492024-11-26T05:31:07Z Development of eddy current testing instrument on metal testing for non-destructive testing applications 2019 Elva Alias TA401-492 Materials of engineering and construction. Mechanics of materials Eddy current facilities are rapidly developing in the field of industry and the effectiveness of the eddy current testing (ECT) instrument is well established on market and yet, the instruments were very expensive and hard to get in this country. Moreover, the optimization for the specification of metals testing is still lacking in research and development. The alternative approach as discussed in this research is by design and construct a low-cost non-destructive metal testing instrument using eddy current method that able to examine the signal imperfection, detect thickness (1.5, 3.0 and 5.0 mm) and lift-off distance (1.0-5.0 mm). The frequency ranges between 250 kHz-3.5 MHz by using 50 ohms function generator is selected to find the optimal frequency for each metal testing (i.e., Brass, Cu, Mg Alloy, Ni and Ti). The important part in constructing the ECT instrument is the dual coil sensor which is known as exciter-receiver coil designed in appropriate turns of coils and the instrument amplifier that give a high output voltage that excel at extracting very weak signals from noisy environments. The output voltage signals from the sensor circuit of the ECT instrument were analyzed and compared. The result of this research showed that the designed ECT instrument able to examine the signal imperfection and also to detect the thickness. The lift-off distance for the ECT instrument is at 1 mm. Meanwhile, the optimal frequency on each metal for the ECT instrument is at 2.90 MHz for Brass, 2.95 MHz for Copper, 2.89 MHz for Magnesium Alloy, 2.85 MHz for Nickel and 2.83 MHz for Titanium. The ECT instrument that is developed from this study can efficiently generate an accurate output reading and suitable for industrial application requirements. 2019 Thesis https://eprints.ums.edu.my/id/eprint/41649/ https://eprints.ums.edu.my/id/eprint/41649/1/ABSTRACT.pdf text en public https://eprints.ums.edu.my/id/eprint/41649/2/FULLTEXT.pdf text en validuser masters Universiti Malaysia Sabah Fakulti Sains dan Sumber Alam
institution	Universiti Malaysia Sabah
collection	UMS Institutional Repository
language	English English
topic	TA401-492 Materials of engineering and construction Mechanics of materials
spellingShingle	TA401-492 Materials of engineering and construction Mechanics of materials Elva Alias Development of eddy current testing instrument on metal testing for non-destructive testing applications
description	Eddy current facilities are rapidly developing in the field of industry and the effectiveness of the eddy current testing (ECT) instrument is well established on market and yet, the instruments were very expensive and hard to get in this country. Moreover, the optimization for the specification of metals testing is still lacking in research and development. The alternative approach as discussed in this research is by design and construct a low-cost non-destructive metal testing instrument using eddy current method that able to examine the signal imperfection, detect thickness (1.5, 3.0 and 5.0 mm) and lift-off distance (1.0-5.0 mm). The frequency ranges between 250 kHz-3.5 MHz by using 50 ohms function generator is selected to find the optimal frequency for each metal testing (i.e., Brass, Cu, Mg Alloy, Ni and Ti). The important part in constructing the ECT instrument is the dual coil sensor which is known as exciter-receiver coil designed in appropriate turns of coils and the instrument amplifier that give a high output voltage that excel at extracting very weak signals from noisy environments. The output voltage signals from the sensor circuit of the ECT instrument were analyzed and compared. The result of this research showed that the designed ECT instrument able to examine the signal imperfection and also to detect the thickness. The lift-off distance for the ECT instrument is at 1 mm. Meanwhile, the optimal frequency on each metal for the ECT instrument is at 2.90 MHz for Brass, 2.95 MHz for Copper, 2.89 MHz for Magnesium Alloy, 2.85 MHz for Nickel and 2.83 MHz for Titanium. The ECT instrument that is developed from this study can efficiently generate an accurate output reading and suitable for industrial application requirements.
format	Thesis
qualification_level	Master's degree
author	Elva Alias
author_facet	Elva Alias
author_sort	Elva Alias
title	Development of eddy current testing instrument on metal testing for non-destructive testing applications
title_short	Development of eddy current testing instrument on metal testing for non-destructive testing applications
title_full	Development of eddy current testing instrument on metal testing for non-destructive testing applications
title_fullStr	Development of eddy current testing instrument on metal testing for non-destructive testing applications
title_full_unstemmed	Development of eddy current testing instrument on metal testing for non-destructive testing applications
title_sort	development of eddy current testing instrument on metal testing for non-destructive testing applications
granting_institution	Universiti Malaysia Sabah
granting_department	Fakulti Sains dan Sumber Alam
publishDate	2019
url	https://eprints.ums.edu.my/id/eprint/41649/1/ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/41649/2/FULLTEXT.pdf
_version_	1818611421546545152

Development of eddy current testing instrument on metal testing for non-destructive testing applications

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