Optimisation frequency for different lift off on aluminium using Eddy Current Testing (ECT) technique
One of the main hindrances of Eddy-current Testing (ECT) technique is the lift-off (LO) effect which it can easily mask defect signals. This paper is an ongoing study on analysing the optimum lift-off value distance for specific design of ECT technique theoretically and experimentally. Through this...
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| Format: | Article |
| Jezik: | English English |
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e-VIBS, Faculty of Science and Natural Resources
2019
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| Online dostop: | https://eprints.ums.edu.my/id/eprint/41000/1/ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/41000/2/FULL%20TEXT.pdf |
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| author | Salmia Santa Fauziah Sulaiman Elnetthra Folly Eldy |
| author_facet | Salmia Santa Fauziah Sulaiman Elnetthra Folly Eldy |
| author_sort | Salmia Santa |
| collection | UMS |
| description | One of the main hindrances of Eddy-current Testing (ECT) technique is the lift-off (LO) effect which it can easily mask defect signals. This paper is an ongoing study on analysing the optimum lift-off value distance for specific design of ECT technique theoretically and experimentally. Through this approach, the detection of imperfections was determined by the slope of the peak value of the different frequency varied by various lift off values and was verified by experiment with an established circuit. This circuit is efficient and could be used with different range of desired frequencies (i.e., 250 kHz -3.5 MHz) by using a function generator and an established probe consists of excitation coils and receiver coils known as dual sensors device. Result obtained from the output voltage signal at higher frequency becomes much lower as the lift-off distance increases. It showed that the signal responses for measuring the various lift-off values, whilst at certain lower frequency could not been detected, however convenient for detect imperfections. Throughout this, the applicable lift-off distance that used to detect imperfection for aluminium with different imperfection sizes was 3 mm for frequency 2.65 MHz, 2 mm for frequency 2.75 MHz, 1 mm for frequency 2.85MHz, and 0 mm for frequency 2.95MHz. It can be concluded that, using higher excitation can be used to measure suitable lift-off, however lower frequency can be used to detect imperfection including its sizes. |
| first_indexed | 2024-09-24T00:52:46Z |
| format | Article |
| id | ums.eprints-41000 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-09-24T00:52:46Z |
| publishDate | 2019 |
| publisher | e-VIBS, Faculty of Science and Natural Resources |
| record_format | dspace |
| spelling | ums.eprints-410002024-09-05T02:43:47Z https://eprints.ums.edu.my/id/eprint/41000/ Optimisation frequency for different lift off on aluminium using Eddy Current Testing (ECT) technique Salmia Santa Fauziah Sulaiman Elnetthra Folly Eldy Q1-390 Science (General) TA401-492 Materials of engineering and construction. Mechanics of materials One of the main hindrances of Eddy-current Testing (ECT) technique is the lift-off (LO) effect which it can easily mask defect signals. This paper is an ongoing study on analysing the optimum lift-off value distance for specific design of ECT technique theoretically and experimentally. Through this approach, the detection of imperfections was determined by the slope of the peak value of the different frequency varied by various lift off values and was verified by experiment with an established circuit. This circuit is efficient and could be used with different range of desired frequencies (i.e., 250 kHz -3.5 MHz) by using a function generator and an established probe consists of excitation coils and receiver coils known as dual sensors device. Result obtained from the output voltage signal at higher frequency becomes much lower as the lift-off distance increases. It showed that the signal responses for measuring the various lift-off values, whilst at certain lower frequency could not been detected, however convenient for detect imperfections. Throughout this, the applicable lift-off distance that used to detect imperfection for aluminium with different imperfection sizes was 3 mm for frequency 2.65 MHz, 2 mm for frequency 2.75 MHz, 1 mm for frequency 2.85MHz, and 0 mm for frequency 2.95MHz. It can be concluded that, using higher excitation can be used to measure suitable lift-off, however lower frequency can be used to detect imperfection including its sizes. e-VIBS, Faculty of Science and Natural Resources 2019 Article NonPeerReviewed text en https://eprints.ums.edu.my/id/eprint/41000/1/ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/41000/2/FULL%20TEXT.pdf Salmia Santa and Fauziah Sulaiman and Elnetthra Folly Eldy (2019) Optimisation frequency for different lift off on aluminium using Eddy Current Testing (ECT) technique. Transactions on Science and Technology, 6 (2-2). pp. 191-197. |
| spellingShingle | Q1-390 Science (General) TA401-492 Materials of engineering and construction. Mechanics of materials Salmia Santa Fauziah Sulaiman Elnetthra Folly Eldy Optimisation frequency for different lift off on aluminium using Eddy Current Testing (ECT) technique |
| title | Optimisation frequency for different lift off on aluminium using Eddy Current Testing (ECT) technique |
| title_full | Optimisation frequency for different lift off on aluminium using Eddy Current Testing (ECT) technique |
| title_fullStr | Optimisation frequency for different lift off on aluminium using Eddy Current Testing (ECT) technique |
| title_full_unstemmed | Optimisation frequency for different lift off on aluminium using Eddy Current Testing (ECT) technique |
| title_short | Optimisation frequency for different lift off on aluminium using Eddy Current Testing (ECT) technique |
| title_sort | optimisation frequency for different lift off on aluminium using eddy current testing ect technique |
| topic | Q1-390 Science (General) TA401-492 Materials of engineering and construction. Mechanics of materials |
| url | https://eprints.ums.edu.my/id/eprint/41000/1/ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/41000/2/FULL%20TEXT.pdf |
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