Detection of Fatigue Microcrack Using Eddy Current Pulsed Thermography
Keyword(s):
Microcracks are a common metallic defect, resulting in degradation of material properties. In this paper, specimens with different fatigue microcracks were detected by eddy current pulsed thermography (ECPT). Signal processing algorithms were investigated to improve the detectability and sensitivity; principal component analysis (PCA) and Tucker decomposition were used to compare the performance of microcrack detection. It was found that both algorithms were highly adaptable. A thermal quotient was used to assess the temperature variation trend. Furthermore, the potential correspondence between crack closure and temperature change was investigated.
2013 ◽
Vol 84
(10)
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pp. 104901
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Keyword(s):
2012 ◽
Vol 23
(3-4)
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pp. 1083-1087
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Comparison of Signal Processing Algorithms for High-Resolution FMCW Terahertz Thickness Measurements
2020 ◽
Vol 1537
◽
pp. 012018
2012 ◽
Vol 2012
◽
pp. 1-11
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