十字交叉旋转场涡流传感器的设计与实现

The design and implementation of crisscross rotation eddy current probe

提出并研制了一种以十字交叉导线为激励装置的涡流传感器结构。这种结构传感器能产生旋转激励涡流场,对于方向呈随机分布的实际裂纹有较好的检测灵敏度。本文从理论上分析了这种结构传感器的工作原理,并通过数值计算软件对感应涡流和裂纹扰动涡流的情况进行了可视化,并设计了试验系统和被检试件。试验结果表明:所设计的传感器对不同方向的裂纹均具有较好的检测能力,说明该传感器采用的激励方式具有开发高灵敏度传感器的潜力。

A crisscross exciting eddy current probe,which can induce a rotating eddy current in conductor,is proposed.This probe which can produce rotating excitation eddy current field,has good detection sensitivity for the crack with the random direction.In this paper,the operation principle of the probeis analyzed theoretically,and the visualization of induced eddy current and disturbance vortex crack is implemented by the numerical calculation software.Experimental results show that this probe has high sensitivity for cracks with different directions,and the proposed probe has the potential for developing high sensitivity eddy current probe.