Elimination of liftoff effect using a model-based method for eddy current characterization of a plate
Elimination of liftoff effect using a model-based method for eddy current characterization of a plate
复制标题
使用基于模型的板涡流表征方法消除提离效应
DOI：
10.1016/j.ndteint.2015.05.007
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发表时间：
2015-09-01
影响因子：
4.2
通讯作者：
Tian, Guiyun
中科院分区：
文献类型：
--
作者：
Fan, Mengbao;Cao, Binghua;Tian, Guiyun
基于模型的反演方法在涡流检测中对金属板的表征进行了广泛的研究。然而，很少有报道涉及取消发射。本文从降低升力的角度对基于模型的反演方法进行了评价。为了获得更好的反演精度，提出了一种复杂而准确的程序，在使用前对线圈参数进行校准。仿真和实验结果表明，基于模型的反演方法将升力变化视为未知变量，具有较好的补偿能力。(C) 2015 Elsevier Ltd.版权所有。
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. (C) 2015 Elsevier Ltd. All rights reserved.