{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,12]],"date-time":"2026-06-12T20:06:52Z","timestamp":1781294812301,"version":"3.54.1"},"reference-count":29,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2023,8,3]],"date-time":"2023-08-03T00:00:00Z","timestamp":1691020800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"China Construction Installation Group Co., Ltd.","award":["AZ-2023-08"],"award-info":[{"award-number":["AZ-2023-08"]}]},{"name":"China Construction Installation Group Co., Ltd.","award":["2020YFB1711203"],"award-info":[{"award-number":["2020YFB1711203"]}]},{"name":"Key Laboratory of Nondestructive Testing (Fujian Polytechnic Normal University)","award":["AZ-2023-08"],"award-info":[{"award-number":["AZ-2023-08"]}]},{"name":"Key Laboratory of Nondestructive Testing (Fujian Polytechnic Normal University)","award":["2020YFB1711203"],"award-info":[{"award-number":["2020YFB1711203"]}]},{"name":"Fujian Province University","award":["AZ-2023-08"],"award-info":[{"award-number":["AZ-2023-08"]}]},{"name":"Fujian Province University","award":["2020YFB1711203"],"award-info":[{"award-number":["2020YFB1711203"]}]},{"name":"National Key R&amp;D Program of China","award":["AZ-2023-08"],"award-info":[{"award-number":["AZ-2023-08"]}]},{"name":"National Key R&amp;D Program of China","award":["2020YFB1711203"],"award-info":[{"award-number":["2020YFB1711203"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Paint coated corrosion detection and evaluation is a big challenge for steel performance and structure health. Eddy current pulsed thermography (ECPT) technique is investigated because it can reflect the corrosion physical properties through paint coating by the infrared signal. This paper proposes skewness method, which presents the feature of temperature curve\u2019s shape automatically, and compares it with principal component analysis (PCA), phase analysis, and kurtosis feature extraction methods for paint coated corrosion characterization and evaluation. The averaged skewness shows the best sensitivity for 0\u20136 months corrosion. The normalized second principal component (PC) presents good sensitivity and the best measurement scale for corroded time. Furthermore, the temperature curve analysis proves that the electrical conductivity dominates the induced heating and heat distribution. The corrosion height is utilized to explain why ECPT technique is valid within 10 months corroded time. ECPT technique is proved as a smart sensor system for paint coated corrosion detection and characterization.<\/jats:p>","DOI":"10.3390\/s23156889","type":"journal-article","created":{"date-parts":[[2023,8,3]],"date-time":"2023-08-03T11:23:03Z","timestamp":1691061783000},"page":"6889","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Comparison Research on Characterization and Evaluation Approaches for Paint Coated Corrosion Using Eddy Current Pulsed Thermography"],"prefix":"10.3390","volume":"23","author":[{"given":"Chao","family":"Xue","sequence":"first","affiliation":[{"name":"School of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing 211816, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yinqiang","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing 211816, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Song","family":"Ding","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing 211816, China"},{"name":"Key Laboratory of Nondestructive Testing, Fujian Polytechnic Normal University, Fujian Province University, Fuqing 350300, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cheng","family":"Song","sequence":"additional","affiliation":[{"name":"Siemens Limited China, Beijing 100102, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8386-5653","authenticated-orcid":false,"given":"Yiqing","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing 211816, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,8,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"723","DOI":"10.1016\/j.conbuildmat.2019.03.334","article-title":"Atmospheric corrosion of weathering steels. Overview for engineers. Part I: Basic concepts","volume":"213","author":"Morcillo","year":"2019","journal-title":"Constr. Build. Mater."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"750","DOI":"10.1016\/j.conbuildmat.2019.06.155","article-title":"Atmospheric corrosion of weathering steels. Overview for engineers. Part II: Testing, inspection, maintenance","volume":"222","author":"Morcillo","year":"2019","journal-title":"Constr. Build. Mater."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"017143","DOI":"10.1063\/1.4907044","article-title":"Measurement of weak magnetic feld of corrosion current of isolated corrosion center","volume":"5","author":"Bardin","year":"2015","journal-title":"AIP Adv."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"115","DOI":"10.1016\/j.jelechem.2018.02.005","article-title":"On quantitative corrosion rate monitoring with ultrasound","volume":"812","author":"Zou","year":"2018","journal-title":"J. Electroanal. Chem."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"2080","DOI":"10.1016\/j.corsci.2010.01.038","article-title":"EIS study on degradation of polymer-coated steel under ultraviolet radiation","volume":"52","author":"Hattori","year":"2010","journal-title":"Corros. Sci."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"604","DOI":"10.1016\/j.conbuildmat.2019.06.120","article-title":"Characterization of stainless steel corrosion processes in mortar using various monitoring techniques","volume":"221","author":"Hren","year":"2019","journal-title":"Constr. Build. Mater."},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Zhang, Y., Liu, X., Xiong, L., Chen, Z., and Wei, J. (2023). A Review of NDT Methods for Wheel Burn Detection on Rails. Sensors, 23.","DOI":"10.3390\/s23115240"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"5000","DOI":"10.1109\/TPEL.2013.2288334","article-title":"State Detection of Bond Wires in IGBT Modules Using Eddy Current Pulsed Thermography","volume":"29","author":"Li","year":"2014","journal-title":"IEEE Trans. Power Electron."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"2307","DOI":"10.1109\/TII.2020.3003335","article-title":"Characterization of Rolling Contact Fatigue Cracks in Rails by Eddy Current Pulsed Thermography","volume":"17","author":"Zhu","year":"2021","journal-title":"IEEE Trans. Ind. Inform."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"102155","DOI":"10.1016\/j.ndteint.2019.102155","article-title":"Comparative analysis of eddy current pulsed thermography and long pulse thermography for damage detection in metals and composites","volume":"107","author":"Wang","year":"2019","journal-title":"NDT E Int."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1016\/j.ndteint.2012.08.007","article-title":"Defect characterisation using pulsed eddy current thermography under transmission mode and NDT applications","volume":"52","author":"Pan","year":"2012","journal-title":"NDT E Int."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"3616","DOI":"10.1109\/TMAG.2005.855174","article-title":"Electromagnetic nondestructive testing of rust region in steel","volume":"41","author":"Gotoh","year":"2005","journal-title":"IEEE Trans. Magn."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.corsci.2013.09.001","article-title":"An investigation into eddy current pulsed thermography for detection of corrosion blister","volume":"78","author":"He","year":"2014","journal-title":"Corros. Sci."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"277","DOI":"10.1016\/j.oceaneng.2017.09.023","article-title":"Through coating imaging and nondestructive visualization evaluation of early marine corrosion using electromagnetic induction thermography","volume":"147","author":"Yang","year":"2018","journal-title":"Ocean Eng."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"064101","DOI":"10.1063\/1.4790866","article-title":"Physical interpretation and separation of eddy current pulsed thermography","volume":"113","author":"Yin","year":"2013","journal-title":"J. Appl. Phys."},{"key":"ref_16","first-page":"19","article-title":"Computed method and validation of thermal conductivity of austenitic stainless steel in cryogenic temperature range","volume":"46","author":"Xiong","year":"2018","journal-title":"Cryog. Supercond."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"2242","DOI":"10.2320\/matertrans.M2009097","article-title":"Physical Properties of Iron-Oxide Scales on Si-Containing Steels at High Temperature","volume":"50","author":"Takeda","year":"2009","journal-title":"Mater. Trans."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"2113","DOI":"10.1109\/JSEN.2012.2184280","article-title":"Steel Corrosion Characterization Using Pulsed Eddy Current Systems","volume":"12","author":"He","year":"2012","journal-title":"IEEE Sens. J."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"2694","DOI":"10.1063\/1.362662","article-title":"Pulse phase infrared thermography","volume":"79","author":"Maldague","year":"1996","journal-title":"J. Appl. Phys."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"107317","DOI":"10.1016\/j.ast.2021.107317","article-title":"Detection of corrosion under insulation on aerospace structures via pulsed eddy current thermography","volume":"121","author":"Johnathan","year":"2022","journal-title":"Aerosp. Sci. Technol."},{"key":"ref_21","first-page":"2","article-title":"A tutorial on principal component analysis","volume":"51","author":"Shlens","year":"2014","journal-title":"Int. J. Remote Sens."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"465","DOI":"10.2307\/2676230","article-title":"Autoregressive conditional skewness","volume":"34","author":"Harvey","year":"1999","journal-title":"J. Financ. Quant. Anal."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"102678","DOI":"10.1016\/j.ndteint.2022.102678","article-title":"Characterisation and evaluation of paint-coated marine corrosion in carbon steel using eddy current pulsed thermography","volume":"130","author":"Ding","year":"2022","journal-title":"NDT E Int."},{"key":"ref_24","unstructured":"(2023, May 01). Skewness. Available online: https:\/\/encyclopedia.thefreedictionary.com\/skewness."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"2037","DOI":"10.1109\/TPAMI.2006.244","article-title":"Face description with local binary patterns: Application to face recognition","volume":"28","author":"Ahonen","year":"2006","journal-title":"IEEE Trans. Pattern. Anal. Mach. Intell."},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Liu, X.L., Tian, G.Y., Yu, C., and Luo, H.Z. (2020). Non-Contact Degradation Evaluation for GBT Modules Using Eddy Current Pulsed Thermography Approach. Energies, 13.","DOI":"10.3390\/en13102613"},{"key":"ref_27","first-page":"14","article-title":"Tech beat: Conductivity in minerals","volume":"64","author":"Canter","year":"2008","journal-title":"Tribol. Lubr. Technol."},{"key":"ref_28","unstructured":"Greenwood, N.N., and Earnshaw, A. (1997). Chemistry of the Elements, Butterworth-heinemann. [2nd ed.]."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"1051","DOI":"10.1016\/S0025-5408(02)00742-0","article-title":"Photoacoustic, EPR and electrical conductivity investigations of three synthetic mineral pigments: Hematite, goethite and magnetite","volume":"37","author":"Guskos","year":"2002","journal-title":"Mater. Res. Bull."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/23\/15\/6889\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T20:24:59Z","timestamp":1760127899000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/23\/15\/6889"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,8,3]]},"references-count":29,"journal-issue":{"issue":"15","published-online":{"date-parts":[[2023,8]]}},"alternative-id":["s23156889"],"URL":"https:\/\/doi.org\/10.3390\/s23156889","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,8,3]]}}}