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Lookup NU author(s): Dr Jianbo Wu,
Kong Jing Li,
Professor Gui Yun Tian,
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2017 Author(s). This letter proposes a novel motion-induced eddy current based thermography (MIECT) for high-speed inspection. In contrast to conventional eddy current thermography (ECT) based on a time-varying magnetic field created by an AC coil, the motion-induced eddy current is induced by the relative motion between magnetic field and inspected objects. A rotating magnetic field created by three-phase windings is used to investigate the heating principle and feasibility of the proposed method. Firstly, based on Faraday's law the distribution of MIEC is investigated, which is then validated by numerical simulation. Further, experimental studies are conducted to validate the proposed method by creating rotating magnetic fields at different speeds from 600 rpm to 6000 rpm, and it is verified that rotating speed will increase MIEC intensity and thereafter improve the heating efficiency. The conclusion can be preliminarily drawn that the proposed MIECT is a platform suitable for high-speed inspection.
Author(s): Wu J, Li K, Tian G, Zhu J, Gao Y, Tang C, Chen X
Publication type: Article
Publication status: Published
Journal: AIP Advances
Online publication date: 01/08/2017
Acceptance date: 01/07/2017
Date deposited: 28/09/2017
ISSN (electronic): 2158-3226
Publisher: American Institute of Physics Inc.
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