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Lookup NU author(s): Professor Gui Yun Tian,
Kong Jing Li,
Dr Bin Gao
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
This paper reviews recent developments of eddy current pulsed thermography (iECPT) for material characterization and nondestructive evaluation (iNDE). Due to the fact that line-coil-based ECPT, with the limitation of non-uniform heating and a restricted view, is not suitable for complex geometry structures evaluation, Helmholtz coils and ferrite-yoke-based excitation configurations of ECPT are proposed and compared. Simulations and experiments of new ECPT configurations considering the multi-physical-phenomenon of hysteresis losses, stray losses, and eddy current heating in conjunction with uniform induction magnetic field have been conducted and implemented for ferromagnetic and non-ferromagnetic materials. These configurations of ECPT for metallic material and defect characterization are discussed and compared with conventional line-coil configuration. The results indicate that the proposed ECPT excitation configurations can be applied for different shapes of samples such as turbine blade edges and rail tracks.
Author(s): Tian GY, Gao YL, Li KJ, Wang YZ, Gao B, He YZ
Publication type: Article
Publication status: Published
Print publication date: 01/06/2016
Online publication date: 08/06/2016
Acceptance date: 31/05/2016
Date deposited: 29/07/2016
ISSN (print): 1424-8220
Publisher: MDPI AG
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