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Hybrid of Eddy Current Probe Based on Permanent Magnet and GMR Sensor

Faraj, Moneer A. and Fahmi, Samsuri and Abdalla, Ahmed N. (2018) Hybrid of Eddy Current Probe Based on Permanent Magnet and GMR Sensor. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 10 (1-2). pp. 7-11. ISSN 2180-1843

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Abstract

The eddy current testing (ECT) is used to inspect a material to determine its properties without destroying its utility. The applications include detection of flaws in aircrafts, pipeline, etc. An ECT is a weak sensitivity to a subsurface defect. Applications of giant magnetic sensors (GMR) are increasingly applied to the measurement of weak magnetic fields related to the currents they cause. In this paper, GMR sensor with magnet bar (permanent) is utilized. The proposed probe system is utilized to study the impact of the width and depth defect on the signal of eddy current testing. The maximum depth of flaw in a mild steel can be revealed by using this probe. The graph of the difference between the peak amplitude and the penetration depth of each slot of a different width of the two bands of mild steel shows the increase of the signal for each slot and flat above 3mm. The experimental result proves the inability of a PMGMR probe to detect a defect at a depth of 3mm on a surface defect.

Item Type: Article
Uncontrolled Keywords: Eddy Current Testing; GMR Sensor; Defect Detection; Non-destructive Testing; Calibration
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division: Faculty of Electrical & Electronic Engineering
Depositing User: Assoc. Pro Fahmi Samsuri
Date Deposited: 29 Mar 2018 00:36
Last Modified: 29 Mar 2018 00:41
URI: http://umpir.ump.edu.my/id/eprint/20721
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