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Eddy current pulsed phase thermography and feature extraction

Lookup NU author(s): Professor Gui Yun TianORCiD, Professor Menghcung Pan

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Abstract

This letter proposed an eddy current pulsed phase thermography technique combing eddy current excitation, infrared imaging, and phase analysis. One steel sample is selected as the material under test to avoid the influence of skin depth, which provides subsurface defects with different depths. The experimental results show that this proposed method can eliminate non-uniform heating and improve defect detectability. Several features are extracted from differential phase spectra and the preliminary linear relationships are built to measure these subsurface defects' depth. (C) 2013 AIP Publishing LLC.

Publication metadata

Author(s): He YZ, Tian GY, Pan MC, Chen DX

Publication type: Article

Publication status: Published

Journal: Applied Physics Letters

Year: 2013

Volume: 103

Issue: 8

Print publication date: 23/08/2013

ISSN (print): 0003-6951

ISSN (electronic): 1077-3118

Publisher: American Institute of Physics

DOI: 10.1063/1.4819475

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