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Lookup NU author(s): Professor Gui Yun TianORCiD,
Professor Menghcung Pan
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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.
Author(s): He YZ, Tian GY, Pan MC, Chen DX
Publication type: Article
Publication status: Published
Journal: Applied Physics Letters
Print publication date: 23/08/2013
ISSN (print): 0003-6951
ISSN (electronic): 1077-3118
Publisher: American Institute of Physics
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