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Simulation based on optimisation of pulsed eddy current probe design

Lookup NU author(s): John Wilson, Professor Gui Yun TianORCiD


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There is a need for a pulsed eddy current (PEC) to detect very small defects and deep buried subsurface flaws reliably in metallic structures such as aircraft wings. This paper reports an investigation into the sensitivity for a pancake PEC probe to variations in the material conductivity of specimens. Three experimental coil parameters are modelled: (a) coil inner radius, (b) coil width and (c) coil height. Based on the predicted signals, the sensitivity of the PEC probe as a function of coil parameters has been formulated. Through matrix numerical simulation experiments using orthogonal array, the weighting of each parameter to the sensitivity has been derived. Subsequently, a theoretical model for probe optimisation is established in order to realise the maximum sensitivity, based on which a probe is designed with improved sensitivity.

Publication metadata

Author(s): Wilson J, Tian GY, Abidin IZ, Yang SX, Almond D

Publication type: Article

Publication status: Published

Journal: Nondestructive Testing and Evaluation

Year: 2010

Volume: 25

Issue: 3

Pages: 205-218

Print publication date: 01/01/2010

ISSN (print): 1058-9759

ISSN (electronic): 1477-2671

Publisher: Taylor & Francis


DOI: 10.1080/10589750903242533


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