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首页> 外文期刊>Magnetics, IEEE Transactions on >Electromagnetic Inspection Technique of Thickness of Nickel-Layer on Steel Plate Without Influence of Lift-Off Between Steel and Inspection Probe
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Electromagnetic Inspection Technique of Thickness of Nickel-Layer on Steel Plate Without Influence of Lift-Off Between Steel and Inspection Probe

机译：钢板上镍层厚度的电磁检测技术，不影响钢与检测探针之间的剥离

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摘要

There is a need to inspect the thickness of a nickel layer of nickel-coated steel plate in the production process to guarantee the quality. The conductivity of a nickel layer in the nickel-coated steel is larger than that of mother steel, and its permeability is smaller than that of mother steel. Therefore, the estimation of thickness of the nickel-layer is possible by using differences of these electromagnetic properties. However, the signal is also influenced by the change of distance (lift-off) between the nickel-coated steel and an electromagnetic sensor. In this paper, the inspection method for measuring the thickness of nickel layer taking account of the lift-off is proposed using the 3-D edge-based hexahedral nonlinear FEM.
机译：在生产过程中需要检查镀镍钢板镍层的厚度以保证质量。镀镍钢中镍层的电导率大于母钢的电导率，并且其导磁率小于母钢的导磁率。因此，可以通过利用这些电磁特性的差异来估计镍层的厚度。但是，该信号也会受到镀镍钢与电磁传感器之间的距离变化（剥离）的影响。在本文中，提出了一种基于3-D边基六面体非线性有限元法的考虑剥离的镍层厚度检测方法。

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