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首页> 外文期刊>NDT & E international >Improve the signal to noise ratio and installation convenience of the inductive coil for wire rope nondestructive testing
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Improve the signal to noise ratio and installation convenience of the inductive coil for wire rope nondestructive testing

机译：改进了用于钢丝绳无损检测的感应线圈的信噪比和安装便利性

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摘要

Inductive coil is used as the nondestructive testing sensor of a wire rope or a pipe, because of its low cost and high durability. However, the winding structure is complex and difficult to design during the field test. Hundreds or even thousands of turns are needed to improve the signal to noise ratio (SNR) and the data processing is cumbersome. In this paper, based on the theoretical analysis and 3D transient magnetic field simulation, a kind of iron core is presented as coil winding skeleton for the wire rope nondestructive testing. Additional iron core plays a role of magnetism concentration, where the magnetic flux leakage (MFL) path is changed and the MFL of the defect is converged to the core. Therefore, the SNR of the coil which is wound on the iron core is improved, and the coil winding skeleton is simplified with the iron core structure optimization. Meanwhile, the influence of the coil cross-section area on the test result analysis is eliminated, and the influence of the lift-off distance between coil and wire rope on the detection result is also reduced. Finally, it is proved by experiment that the SNR of coil with the iron core proposed in this paper is increased almost six times, which makes it easier for defect analysis.
机译：电感线圈由于其低成本和高耐用性而被用作钢丝绳或管道的无损检测传感器。但是，绕组结构复杂并且在现场测试期间难以设计。需要数百甚至数千匝来改善信噪比（SNR），并且数据处理很麻烦。本文在理论分析和3D瞬态磁场模拟的基础上，提出了一种铁芯作为线圈绕组骨架，用于钢丝绳的无损检测。额外的铁芯起着磁性集中的作用，其中磁通量泄漏（MFL）路径发生变化，缺陷的MFL会聚到铁芯上。因此，提高了缠绕在铁芯上的线圈的SNR，并且通过优化铁芯结构简化了线圈绕组骨架。同时，消除了线圈截面积对测试结果分析的影响，并且减小了线圈与钢丝绳之间的提离距离对检测结果的影响。最后，通过实验证明，本文提出的带有铁芯的线圈的信噪比提高了近六倍，这使得缺陷分析更加容易。

著录项

  • 来源
    《NDT & E international》 |2017年第12期|221-227|共7页
  • 作者

    Yan Xiaolan; Zhang Donglai; Zhao Fei;

  • 作者单位

    Department of Electrical Engineering and Electronics, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen, China;

    Department of Electrical Engineering and Electronics, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen, China;

    Department of Electrical Engineering and Electronics, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Inductive coil; Lift-off; Magnetic methods; Signal-to-noise ratio; Wire rope;

    机译：感应线圈升空;磁性方法;信噪比;钢丝绳;

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