{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,17]],"date-time":"2025-10-17T14:17:02Z","timestamp":1760710622634,"version":"3.41.2"},"reference-count":26,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2021,6,17]],"date-time":"2021-06-17T00:00:00Z","timestamp":1623888000000},"content-version":"vor","delay-in-days":167,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["51807086"],"award-info":[{"award-number":["51807086"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Sensors"],"published-print":{"date-parts":[[2021,1]]},"abstract":"<jats:p>Flexible planar eddy current probes are widely used to detect conductive components with complex surface. In this study, topological transformation is applied to design a differential Koch coil exciting eddy current probe. Two kinds of Koch exciting coils, Koch A and Koch <jats:italic>B<\/jats:italic>, were obtained by topological transformation from a three\u2010dimensional differential exciting eddy current probe. Finite element model simulation is conducted to visualize the differences of eddy current distributions induced by the probes and get the defect signal. A detailed comparison is made among the two kinds of Koch eddy current probes and a circular eddy current probe by experiments. The experiments demonstrate that the sensitivity of the Koch A eddy current probe is higher than that of another two probes for detecting the defect which is shorter than the size of the probe. This work provides a novel method for improving the performance of eddy current probes in the coil structure design.<\/jats:p>","DOI":"10.1155\/2021\/6671189","type":"journal-article","created":{"date-parts":[[2021,6,17]],"date-time":"2021-06-17T18:05:08Z","timestamp":1623953108000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["A Novel Planar Differential Koch Fractal Eddy Current Probe with Parallel Wound Topological Structure"],"prefix":"10.1155","volume":"2021","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6070-3881","authenticated-orcid":false,"given":"Guolong","family":"Chen","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zheng","family":"Cao","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5177-5119","authenticated-orcid":false,"given":"Weimin","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,6,17]]},"reference":[{"key":"e_1_2_10_1_2","doi-asserted-by":"publisher","DOI":"10.1109\/19.293468"},{"key":"e_1_2_10_2_2","doi-asserted-by":"publisher","DOI":"10.1109\/TIM.2012.2232471"},{"key":"e_1_2_10_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.measurement.2014.12.015"},{"key":"e_1_2_10_4_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10033-017-0122-4"},{"key":"e_1_2_10_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ndteint.2017.02.009"},{"key":"e_1_2_10_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ndteint.2019.102154"},{"key":"e_1_2_10_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ndteint.2019.102211"},{"key":"e_1_2_10_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.sna.2006.10.013"},{"key":"e_1_2_10_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ndteint.2014.09.009"},{"key":"e_1_2_10_10_2","doi-asserted-by":"publisher","DOI":"10.1109\/JSEN.2016.2556221"},{"key":"e_1_2_10_11_2","doi-asserted-by":"crossref","unstructured":"DibG. YangG. YeC. TamburrinoA. UdpaL. andUdpaS. S. EC-GMR array with rotating current excitation for multilayered riveted structures inspection Presented at Aip Conference 2015 https:\/\/doi.org\/10.1063\/1.4914632 2-s2.0-84984561841.","DOI":"10.1063\/1.4914632"},{"key":"e_1_2_10_12_2","first-page":"1","article-title":"Small eddy current testing sensor probe using a tunneling magnetoresistance sensor to detect cracks in steel structures","volume":"54","author":"Toshihiko K.","year":"2018","journal-title":"IEEE Transactions on Magnetics"},{"key":"e_1_2_10_13_2","unstructured":"SantosT. S. RamosP. M. andVila\u00e7aP. S. Non destructive testing of friction stir welding: comparison of planar eddy current probes Presented at Imeko Tc4 Symposium 2008 Florence Italy."},{"key":"e_1_2_10_14_2","doi-asserted-by":"crossref","unstructured":"PengX.andHuangJ. A new eddy current sensor composed of three circumferential gradient winding coils Presented at Seventh International Conference on Sensing Technology 2013 Wellington New Zealand https:\/\/doi.org\/10.1109\/icsenst.2013.6727782 2-s2.0-84897872659.","DOI":"10.1109\/ICSensT.2013.6727782"},{"key":"e_1_2_10_15_2","doi-asserted-by":"publisher","DOI":"10.1088\/1361-6501\/aa5b76"},{"key":"e_1_2_10_16_2","doi-asserted-by":"publisher","DOI":"10.3390\/s16070952"},{"volume-title":"Uncalibrated, Absolute Property Estimation and Measurement Optimization for Conducting and Magnetic Media Using Imposed [Omega]-k Magnetometry","year":"1991","author":"Goldfine N. J.","key":"e_1_2_10_17_2"},{"key":"e_1_2_10_18_2","doi-asserted-by":"publisher","DOI":"10.1098\/rsta.2019.0579"},{"key":"e_1_2_10_19_2","doi-asserted-by":"publisher","DOI":"10.1109\/jsen.2020.2995472"},{"key":"e_1_2_10_20_2","doi-asserted-by":"publisher","DOI":"10.1109\/jsen.2019.2919661"},{"key":"e_1_2_10_21_2","doi-asserted-by":"publisher","DOI":"10.1109\/JSEN.2014.2375203"},{"key":"e_1_2_10_22_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.measurement.2018.04.031"},{"key":"e_1_2_10_23_2","series-title":"Studies in Applied Electromagnetics and Mechanics","first-page":"133","volume-title":"In Electromagnetic nondestructive evaluation 40","author":"Chen G. L.","year":"2015"},{"key":"e_1_2_10_24_2","unstructured":"UenoK. ShigaK. andMoritaS. A Mathematical Gift I II III: The Interplay between Topology Functions Geometry and Algebra [M] 2005."},{"key":"e_1_2_10_25_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ndteint.2017.12.001"},{"key":"e_1_2_10_26_2","doi-asserted-by":"publisher","DOI":"10.3390\/s19214628"}],"container-title":["Journal of Sensors"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/js\/2021\/6671189.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/js\/2021\/6671189.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1155\/2021\/6671189","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,8,6]],"date-time":"2024-08-06T00:19:32Z","timestamp":1722903572000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1155\/2021\/6671189"}},"subtitle":[],"editor":[{"given":"Abdellah","family":"Touhafi","sequence":"additional","affiliation":[],"role":[{"role":"editor","vocabulary":"crossref"}]}],"short-title":[],"issued":{"date-parts":[[2021,1]]},"references-count":26,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2021,1]]}},"alternative-id":["10.1155\/2021\/6671189"],"URL":"https:\/\/doi.org\/10.1155\/2021\/6671189","archive":["Portico"],"relation":{},"ISSN":["1687-725X","1687-7268"],"issn-type":[{"type":"print","value":"1687-725X"},{"type":"electronic","value":"1687-7268"}],"subject":[],"published":{"date-parts":[[2021,1]]},"assertion":[{"value":"2020-10-23","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-04-26","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-06-17","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"6671189"}}