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Entropy 2016, 18(11), 392; doi:10.3390/e18110392

Angular Spectral Density and Information Entropy for Eddy Current Distribution

School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
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Academic Editor: Dawn Holmes
Received: 20 September 2016 / Revised: 2 November 2016 / Accepted: 7 November 2016 / Published: 10 November 2016
(This article belongs to the Special Issue Maximum Entropy and Its Application II)
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Abstract

Here, a new method is proposed to quantitatively evaluate the eddy current distribution induced by different exciting coils of an eddy current probe. Probability of energy allocation of a vector field is modeled via conservation of energy and imitating the wave function in quantum mechanics. The idea of quantization and the principle of circuit sampling is utilized to discretize the space of the vector field. Then, a method to calculate angular spectral density and Shannon information entropy is proposed. Eddy current induced by three different exciting coils is evaluated with this method, and the specific nature of eddy current testing is discussed. View Full-Text
Keywords: eddy current testing; non-destructive testing; conservation of energy; planar eddy current probe; fractal geometry eddy current testing; non-destructive testing; conservation of energy; planar eddy current probe; fractal geometry
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Chen, G.; Zhang, W. Angular Spectral Density and Information Entropy for Eddy Current Distribution. Entropy 2016, 18, 392.

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