Lift-Off Effect Evaluation by Using Eddy Current Testing Technique on Copper (C101)

Fauziah Sulaiman and Syafiqa Putri Adlina Harun and Elnetthra Folly Eldy (2023) Lift-Off Effect Evaluation by Using Eddy Current Testing Technique on Copper (C101). International Journal of Emerging Technology and Advanced Engineering, 13. pp. 53-62.

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Abstract

This study aims to develop an eddy current testing (ECT) probe that generates eddy current signals when a coil is placed above copper101 metal testing with and without nonconductive coating and the presence of lift-off height, i.e., 0, 2.5, 5.0, 7.5, and 10.0 0.5 mm. Then, the metal test with a variety of thicknesses, i.e., 1.5, 3.0, and 5.0 0.5 mm, and with varies of surface defects, i.e., 10, 20, and 30  0.5 mm, engraved on the metal testing. The coil probe is a rodshaped solenoid coil designed with an iron core with 65 mm length, 5 mm area, and 200 N turns. It demonstrates how the rod-shaped solenoid coil may be used to detect various surface defects on copper101 (C101). The optimal frequencies for C101 are 7.850 MHz. In conclusion, the output voltage signals for larger surface defect sizes increase but decrease as the thickness becomes thicker. Furthermore, as the lift-off height increases, the output voltage for both coated and non-coated metal decreases accordingly. Therefore, besides comparing the output voltage for coated and non-coated metals, there are minor differences which shows that the ECT technique in this studyis capableto detect surface defects appropriately.

Item Type:	Article
Keyword:	Eddy current testing, Defect detection, Lift-off, Non-conductivecoated, Non-destructive testing, Copper (C101)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA1-2040 Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Department:	FACULTY > Faculty of Science and Natural Resources
Depositing User:	SITI AZIZAH BINTI IDRIS -
Date Deposited:	12 Jul 2023 16:08
Last Modified:	12 Jul 2023 16:08
URI:	https://eprints.ums.edu.my/id/eprint/35811

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