Finite Element Analysis of Nondestructive Testing Eddy Current Problems With Moving Parts
Finite Element Analysis of Nondestructive Testing Eddy Current Problems With Moving Parts
复制标题
DOI：
10.1109/tmag.2013.2242899
复制
发表时间：
2013-01
影响因子：
2.1
通讯作者：
Mladen Zec;Robert P. Uhlig;M. Ziolkowski;H. Brauer
中科院分区：
文献类型：
--
作者：
Mladen Zec;Robert P. Uhlig;M. Ziolkowski;H. Brauer
我们提出的逻辑表达式（LE）的方法，可以快速计算三维涡流问题，包括运动中的零件。该方法应用时间相关的逻辑表达式来描述一个固定的计算网格上的模型的移动部分。这项研究的动机是一种新的无损检测技术，称为洛伦兹力涡流检测（LET），它能够检测导电材料内部深处的缺陷。根据参考系的定义，我们提出了LE方法的两种不同实现方式，称为1）移动磁体方法和2）移动缺陷方法。为了证明LE方法的优点，我们将其结果与滑动网格技术进行了比较。并通过实验对所得结果进行了验证。
We present the logical expressions (LE) approach that allows fast computation of three-dimensional eddy current problems, including parts in motion. The approach applies time-dependent logical expressions to describe moving parts of the model on a fixed computational grid. The study is motivated by a novel nondestructive testing technique called Lorentz force eddy current testing (LET), which enables the detection of defects lying deep inside a conducting material. Depending on the definition of the frame of reference, we present two different implementations of the LE approach referred to as 1) moving magnet approach, and 2) moving defect approach. In order to demonstrate the advantages of the LE approach, we compare its results with the sliding mesh technique. The validation of the obtained results with experiments is also presented.