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Non-destructive testing (NDT) has preoccupied a growing number of scientists in recent years. In the field of NDT, the eddy current testing is widely used in industry occasions. It is important to optimize the parameters of the planar eddy current coil to improve the sensitivity of non-destructive testing. In this paper, a planar eddy current excitation coil with the multi-frequency signal on a printed...
This paper proposes an improved extended finite element method for modeling electromagnetic devices with multiple nearby geometrical interfaces. In regions near these interfaces, the magnetic vector potential approximation is enriched by incorporating multiple derivative discontinuous fields based on the partition of unity method such that the interfaces can be represented independent of the mesh...
Several optimal design schemes of a single-sided linear induction motor (SLIM) adopted in linear metro are presented in this paper. Firstly, the equivalent circuit of SLIM fully considering the end effects, half-filled slots, back-iron saturation and skin effect is proposed, based on one-dimensional air-gap magnetic equations. In the circuit, several coefficients including longitudinal end effect...
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