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Elimination of liftoff effect using a model-based method for eddy current characterization of a plate

Lookup NU author(s): Dr Mengbao Fan, Dr Binghua Cao, Dr Wei Li, Professor Gui Yun TianORCiD


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Model-based inversion method has been studied extensively for characterization of a metal plate in eddy current testing. However, few reports cover liftoff elimination. In this work, model-based inversion method is evaluated in terms of liftoff reduction. For better inversion accuracy, a complex yet accurate procedure is presented to do calibrations of coil parameters before use. The results from simulations and experiments demonstrate that model-based inversion method has an exceptional ability to compensate influence of large liftoff variations by considering it as an unknown variable to be determined.

Publication metadata

Author(s): Fan M, Cao B, Yang P, Li W, Tian GY

Publication type: Article

Publication status: Published

Journal: NDT & E International

Year: 2015

Volume: 74

Pages: 66-71

Print publication date: 01/09/2015

Online publication date: 29/05/2015

Acceptance date: 15/05/2015

ISSN (print): 0963-8695

ISSN (electronic): 1879-1174

Publisher: Elsevier Ltd


DOI: doi:10.1016/j.ndteint.2015.05.007


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Funder referenceFunder name
China Jiangsu Provincial Department of Education
Priority Academic Program Development of Jiangsu Higher Education Institutions
2012QNA30Fundamental Research Funds for the Central Universities
51307172National Natural Science Foundation of China
51465024National Natural Science Foundation of China
20120095120027Specialized Research Fund for the Doctoral Program of Higher Education for New Teachers
APCLI1404Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education)
BK2012567Jiangsu Provincial Natural Science Foundation of China