Microdefect Detection and Characterization Using Pot-Core Coils and LDC

IF 4.3 2区综合性期刊 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Sensors Journal Pub Date : 2025-03-11 DOI:10.1109/JSEN.2025.3547576

Xiaolong Lu;Zongwen Wang;Zhengzheng Liang;Feilong Peng;Qiuji Yi;Guiyun Tian

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引用次数: 0

Abstract

To address the challenges of high power consumption and limited applicability of current pipeline eddy current detectors in small-diameter and low-pressure pipelines, this article introduces a novel low-power eddy current sensor based on an inductor digital converter (LDC). This sensor is specifically designed to detect minor defects. It employs a pot-cored coil as the sensing probe and can simultaneously output inductance L and parallel impedance

${R}_{p}$

signals to characterize defects jointly. In this study, we establish a theoretical model of resonant eddy current testing (ECT) and investigate, through numerical simulations, the magnetic field distribution, induced eddy current distribution, and detection capabilities for various types of defects in pot-core coils, I-core coils, and air-core coils. Performance tests of the sensor were conducted using flat plates and half tubes with artificial defects as detection objects. The experimental results demonstrate that the sensor exhibits high sensitivity to small defects, successfully detecting a minimum width of 0.2 mm, a minimum diameter of 2 mm, and a minimum depth of 0.5 mm. These findings provide a theoretical foundation for the application of the sensor in detecting small-diameter and long-distance pipelines.

查看原文本刊更多论文

基于锅芯线圈和LDC的微缺陷检测与表征

针对现有管道涡流检测器在小直径、低压管道中功耗高、适用性有限的问题，本文介绍了一种基于电感式数字转换器（LDC）的新型低功率涡流传感器。这种传感器是专门为检测微小缺陷而设计的。采用锅芯线圈作为传感探头，可同时输出电感L和并联阻抗${R}_{p}$信号，共同表征缺陷。在本研究中，我们建立了谐振涡流检测（ECT）的理论模型，并通过数值模拟研究了锅芯线圈、工芯线圈和空芯线圈的磁场分布、感应涡流分布以及对各种类型缺陷的检测能力。采用带人工缺陷的平板和半管作为检测对象，对传感器进行了性能测试。实验结果表明，该传感器对微小缺陷具有较高的灵敏度，可成功检测到最小宽度为0.2 mm、最小直径为2mm、最小深度为0.5 mm的缺陷。研究结果为该传感器在小直径长输管道检测中的应用提供了理论基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Sensors Journal 工程技术-工程：电子与电气

CiteScore

7.70

自引率

14.00%

发文量

2058

审稿时长

5.2 months

期刊介绍： The fields of interest of the IEEE Sensors Journal are the theory, design , fabrication, manufacturing and applications of devices for sensing and transducing physical, chemical and biological phenomena, with emphasis on the electronics and physics aspect of sensors and integrated sensors-actuators. IEEE Sensors Journal deals with the following: -Sensor Phenomenology, Modelling, and Evaluation -Sensor Materials, Processing, and Fabrication -Chemical and Gas Sensors -Microfluidics and Biosensors -Optical Sensors -Physical Sensors: Temperature, Mechanical, Magnetic, and others -Acoustic and Ultrasonic Sensors -Sensor Packaging -Sensor Networks -Sensor Applications -Sensor Systems: Signals, Processing, and Interfaces -Actuators and Sensor Power Systems -Sensor Signal Processing for high precision and stability (amplification, filtering, linearization, modulation/demodulation) and under harsh conditions (EMC, radiation, humidity, temperature); energy consumption/harvesting -Sensor Data Processing (soft computing with sensor data, e.g., pattern recognition, machine learning, evolutionary computation; sensor data fusion, processing of wave e.g., electromagnetic and acoustic; and non-wave, e.g., chemical, gravity, particle, thermal, radiative and non-radiative sensor data, detection, estimation and classification based on sensor data) -Sensors in Industrial Practice