Analytical model for rectangular side-by-side probe in eddy-current non-destructive inspection

A side-by-side probe is typically used in eddy-current testing as it offers advantages such as good sensitivity and high signal-to-noise ratio. However, most studies regarding side-by-side probes are primarily based on circular coils. In this study, an analytical model of a rectangular side-by-side...

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Bibliographic Details
Published in:Nondestructive testing and evaluation 2021-07, Vol.36 (4), p.357-365
Main Authors: Dehui, Wu, Chen, Wenxiong, Yang, Jiaxin, Yang, Fan
Format: Article
Language:English
Subjects:
Coils
Eddy current testing
Eddy currents
eddy-current
Inspection
Mathematical analysis
Mathematical models
mutual inductance
Noise sensitivity
receiver coil
rectangular coil
Rectangular side-by-side probe
Signal to noise ratio
transmitter coil
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Summary:A side-by-side probe is typically used in eddy-current testing as it offers advantages such as good sensitivity and high signal-to-noise ratio. However, most studies regarding side-by-side probes are primarily based on circular coils. In this study, an analytical model of a rectangular side-by-side probe is developed, in which transmitter and receiver coils are rectangular and assembled side-by-side above a conductive plate. An experimental setup is built to verify the analytical calculations. Experimental results show that the values calculated using this model agree well with measured values. The analytical model can be used to evaluate probe performance through the geometrical dimensions of the coils, coil distance, and lift-off, and provides an effective tool to aid the design of a rectangular side-by-side probe.
ISSN:1058-9759
1477-2671
DOI:10.1080/10589759.2020.1813283