宁夏电力Issue(1)：42-47,6.DOI:10.3969/j.issn.1672-3643.2024.01.007
基于涡流传感器阻抗变化的导电材料缺陷检测
Defect detection in conductive materials based on impedance variations in the eddy current
丁鹂 1顾文波 2崔巍 3马倩倩 4刘威峰 2牛勃2
作者信息
- 1. 国网宁夏电力有限公司吴忠供电公司,宁夏 吴忠 751100
- 2. 国网宁夏电力有限公司电力科学研究院,宁夏 银川 750011
- 3. 国网宁夏电力有限公司超高压公司,宁夏 银川 750011
- 4. 国网宁夏电力有限公司石嘴山供电公司,宁夏 石嘴山 753000
- 折叠
摘要
Abstract
Eddy current testing is a technique for electromagnetic non-destructive testing and evaluation of conductive materials.This study focuses on finite element simulation analysis of eddy current distribution in the surface defect areas of a specimen at a room temperature of 25℃.It proposes a method for detecting surface defects in conductive materials at elevated temperatures of 100℃ and 150℃ through changes in the impedance of eddy current sensor coils.The coil impedance measurements are carried out under both room temperature and elevated temperatures,producing correspond-ing 3D surface color maps of impedance.These maps are used to identify defects by analyzing the amplitude and phase of the surface impedance of the test piece.The experiments demonstrate that variations in the eddy current sensor coil's impedance can ascertain the presence of surface defects in the conductive materials when exposed to elevated tempera-tures.The study also establishes a correlation between defects and coil impedance at different temperatures.关键词
高温检测/涡流测试/阻抗测量/表面缺陷Key words
elevated-temperature testing/eddy current testing/impedance measurement/surface defects分类
信息技术与安全科学引用本文复制引用
丁鹂,顾文波,崔巍,马倩倩,刘威峰,牛勃..基于涡流传感器阻抗变化的导电材料缺陷检测[J].宁夏电力,2024,(1):42-47,6.
