Modelling and inversion techniques for thickness measurement of multi-layered structures in eddy current testing

Autor:	Zhaotong Wu, Dibo Hou, Guangxin Zhang, Pingjie Huang, Zekui Zhou
Rok vydání:	2006
Předmět:	Artificial neural network Mechanical Engineering Acoustics Metals and Alloys Inverse Inversion (meteorology) Backpropagation Mechanics of Materials Electromagnetic coil Eddy-current testing Materials Chemistry Algorithm Electrical conductor Electrical impedance Mathematics
Zdroj:	Insight - Non-Destructive Testing and Condition Monitoring. 48:406-409
ISSN:	1354-2575
DOI:	10.1784/insi.2006.48.7.406
Popis:	The analytical forward model of a probe coil located over multi-layered conductive structures in eddy current testing is investigated and the calculation technique for the impedance model is presented. For multi-layered thickness measurement using the ECT method, the inverse model is investigated and three inversion methods including the least squares method, Back Propagation (BP) and Radial Based Function (RBF) neural network method are presented. The thickness measurement of a four-layer structure is carried out and the excellent experimental inversion results show the merits of the techniques studied.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::08f07dc7c79d3c457dece432e70d76b4 https://doi.org/10.1784/insi.2006.48.7.406 Zobrazit plný text záznamu Plný text ve formátu PDF