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Design and optimisation of mutual inductance based pulsed eddy current probe

Lookup NU author(s): Denis Ona, Professor Gui Yun TianORCiD, Ruslee Sutthaweekul, Dr Mohsen Naqvi



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


© 2019 Elsevier LtdHigh lift-off inspection arising from thick insulation and requirement to protect probe from weld zones are challenges to pulsed eddy current (PEC) testing. In traditional PEC probe with fixed coil gap, weakening interaction between probe and test sample as lift-off increases reduces sensitivity. To analyse this influence, numerical simulation and experiments on design and optimisation of driver-pickup PEC probes are carried out. Results validate that both coil gap and lift-off have significant effects on resultant mutual inductance of driver-pickup PEC probes above test samples. In addition, the probe sensitivity is enhanced at a higher lift-off when coil gap exceeds a certain value. The increase in detection lift-off with coil gap could be optimised.

Publication metadata

Author(s): Ona DI, Tian GY, Sutthaweekul R, Naqvi SM

Publication type: Article

Publication status: Published

Journal: Measurement

Year: 2019

Volume: 144

Pages: 402-409

Print publication date: 01/10/2019

Online publication date: 15/05/2019

Acceptance date: 04/04/2019

Date deposited: 14/06/2019

ISSN (print): 0263-2241

ISSN (electronic): 1873-412X

Publisher: Elsevier BV


DOI: 10.1016/j.measurement.2019.04.091


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