三维远场涡流无损探伤的有限元研究——位函数讨论及算子分析

A Finite Element Study of Remote Field Eddy Current Nondestructive Test: Potential Discussion and Operator Analysis

本文从电磁场有限元出发研究了混和位和微分算子,得到适于远场涡流的A,V-A_3-ψ模型及相应旋度-旋度算子下的有限元公式。数值模拟结果表明,模拟值与实验值相一致,这不仅验证了本文算法,同时还进一步解释了远场涡流探伤中的某些现象,说明文中方法具有一定的实用性。

By using finite element method, the hybrid potentials and differential operators have been researched for remote field eddy current(RFEC) nondestructive test, and the formulations based on A, V-A_s-φ model and ▽×▽ operator are obtained. Numerical Simulation shows good agreement with experiment and furthermore, it can be used to explain some phenomena in RFEC test.