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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
https://eprints.ums.edu.my/id/eprint/41649/
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spelling my.ums.eprints.416492024-11-26T05:31:07Z https://eprints.ums.edu.my/id/eprint/41649/ Development of eddy current testing instrument on metal testing for non-destructive testing applications 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 NonPeerReviewed text en https://eprints.ums.edu.my/id/eprint/41649/1/ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/41649/2/FULLTEXT.pdf Elva Alias (2019) Development of eddy current testing instrument on metal testing for non-destructive testing applications. Masters thesis, Universiti Malaysia Sabah.
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
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
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
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
https://eprints.ums.edu.my/id/eprint/41649/
_version_ 1817843827565658112
score 13.222552

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