Abstract

The objective of this study is to improve the detection capability of eddy current testing by developing a novel eddy current probe. The developed probe is composed of six excitation coils made at different areas and suitably aligned with a single-axis sensitive DRV425EVM fluxgate sensor. The distribution of magnetic field intensity and eddy current density of the developed probe were calculated using ANSYS 2019R3 (Maxwell-3D) simulation software. The simulation results revealed that the new probe design enhances the detection capability and the spatial resolution compared to the conventional design that uses a double-D coil. Experiments were carried out using the double-D coil as reference, under the same input parameter to detect flaws with various sizes and locations. The experimental results validated the simulation results and showed that the sensitivity and spatial resolution of the developed sensor are much better than those obtained by the conventional probe.

中文翻译：

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通过将新型涡电流探头与Fluxgate磁传感器集成来改善缺陷检测

摘要

这项研究的目的是通过开发一种新型的涡流探头来提高涡流测试的检测能力。开发的探头由六个在不同区域制成的励磁线圈组成，并与单轴灵敏DRV425EVM通量门传感器适当对准。使用ANSYS 2019R3（Maxwell-3D）仿真软件计算已开发探头的磁场强度和涡流密度分布。仿真结果表明，与使用双D线圈的常规设计相比，新的探头设计提高了检测能力和空间分辨率。在相同的输入参数下，使用双D型线圈作为参考进行了实验，以检测各种尺寸和位置的缺陷。