Comparative analysis of electromagnet and coil-based magneto-acoustic emission detection in pre-stressed Q235 steel

IF 4.1 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Ndt & E International Pub Date : 2025-04-11 DOI:10.1016/j.ndteint.2025.103414

Wasil Riaz , Zenghua Liu , Xiaoran Wang , Yongna Shen , Omer Farooq , Cunfu He , Gongtian Shen

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Abstract

This study presents a comparative analysis of magneto-acoustic emission (MAE) signal detection using contact-based electromagnet and non-contact coil setups in pre-stressed Q235 steel samples. The research investigates how these two excitation methods influence MAE signal characteristics, including amplitude, root mean square (RMS), pulse counts, and pulse height distribution (PHD), under varying excitation frequencies (1, 10, and 20 Hz), voltages (10, 20, and 30 V) and tensile strain levels. The results demonstrate that the coil setup provides stable and consistent MAE signals, serving as a reliable baseline, while the electromagnet setup exhibits greater signal sensitivity but introduces variability due to contact-based excitation. The study highlights how contact quality and air-gap effects influence MAE signal variability in electromagnet-based detection of pre-stressed Q235 steel, the need for optimizing excitation conditions and understanding the limitations of electromagnet-based MAE for more reliable non-destructive testing in industrial applications, enabling the broader adoption of MAE-based non-destructive testing in industrial settings.

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Q235预应力钢电磁与线圈磁声发射检测的对比分析

本研究对预应力Q235钢样品中使用接触式电磁铁和非接触式线圈设置的磁声发射（MAE）信号检测进行了比较分析。该研究探讨了在不同激励频率（1、10和20 Hz）、电压（10、20和30 V）和拉伸应变水平下，这两种激励方法如何影响MAE信号特性，包括振幅、均方根（RMS）、脉冲数和脉冲高度分布（PHD）。结果表明，线圈设置提供稳定和一致的MAE信号，作为可靠的基线，而电磁铁设置显示出更高的信号灵敏度，但由于基于接触的激励引入了可变性。该研究强调了接触质量和气隙效应如何影响基于电磁的预应力Q235钢检测中的MAE信号变化，优化激励条件的必要性，以及了解基于电磁的MAE在工业应用中更可靠的无损检测的局限性，从而使基于MAE的无损检测在工业环境中得到更广泛的采用。

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

Ndt & E International 工程技术-材料科学：表征与测试

CiteScore

7.20

自引率

9.50%

发文量

121

审稿时长

55 days

期刊介绍： NDT&E international publishes peer-reviewed results of original research and development in all categories of the fields of nondestructive testing and evaluation including ultrasonics, electromagnetics, radiography, optical and thermal methods. In addition to traditional NDE topics, the emerging technology area of inspection of civil structures and materials is also emphasized. The journal publishes original papers on research and development of new inspection techniques and methods, as well as on novel and innovative applications of established methods. Papers on NDE sensors and their applications both for inspection and process control, as well as papers describing novel NDE systems for structural health monitoring and their performance in industrial settings are also considered. Other regular features include international news, new equipment and a calendar of forthcoming worldwide meetings. This journal is listed in Current Contents.