Numerical and experimental investigation of eddy current thermography technique on metallic samples

Zainal Abidin, Ilham Mukriz; Leading Edge NDT Technology (LENDT) Group; Malaysia

Abidin, I.Z.; Malaysian Nuclear Agency; Malaysia
Hamzah, A.R.; University Kuala Lumpur – Malaysia France Institute (UniKL-MFI); Malaysia
Yusof, M.Y.; LENDT Group, Malaysian Nuclear Agency; Malaysia

ID: ECNDT-0454-2018
Session: Thermography and Thermosonics Techniques 2
Room: H1
Date: 2018-06-15
Time: 11:30 - 11:50

Current and future industry requirements demand advances in NDT. Fast and efficient methods and techniques for defect detection and characterization would be one of the main focus thus improving inspection results. Eddy current thermography is an emerging advanced NDT technique which combines the well-established eddy current testing with thermography inspection. It uses induced eddy current to heat the sample being inspected and defect detection is based on the changes of the induced eddy current flows revealed by thermal visualization over a relatively large area captured by an infrared camera. This work presents the results from 3D FEM simulation and experimental investigation of eddy current thermography on defects in metallic samples. The underlying phenomena of eddy current thermography testing are explored through the simulation which provides the explanation and reasoning of results. Experimental validation and investigation offers an insight to its potential for industrial application. The work demonstrates the effectiveness of eddy current thermography in providing comprehensive and reliable defect assessment.