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A new eddy current displacement measuring instrument independent of sample electromagnetic properties

机译：不受样品电磁特性影响的新型涡流位移测量仪

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摘要

Eddy current sensors, as one of nondestructive testing and evaluation instruments, have been widely used in displacement measurement as well as defect characterization. However, in eddy current displacement measurement, the test not only depends on the displacement between the coil and samples, but also relates to the electrical and magnetic properties (such as electrical conductivity and magnetic permeability) of samples. So, the eddy current sensor is limited to test one sample after one calibration. In order to make eddy current sensors compatible with more samples after one calibration without testing error, this paper designed a new eddy current displacement instrument extended from the previous theoretical analysis and experiment study investigating the relationship of the coil resistance and inductance. A series of experiments indicate that the designed new eddy current displacement instrument can eliminate the influence of the samples' electromagnetic properties effectively.
机译：涡流传感器作为一种无损检测和评估仪器，已广泛用于位移测量和缺陷表征。然而，在涡流位移测量中，测试不仅取决于线圈和样品之间的位移，而且还与样品的电和磁性能（例如电导率和导磁率）有关。因此，涡流传感器仅限于一次校准后测试一个样品。为了使一次校准后的涡流传感器能够兼容更多的样品而没有测试误差，本文设计了一种新的涡流位移仪，它是在以往理论分析和实验研究的基础上进行扩展的，旨在研究线圈电阻和电感之间的关系。一系列实验表明，设计的新型涡流位移仪可以有效消除样品电磁性能的影响。

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  • 来源
    《NDT & E international》 |2012年第2012期|p.16-22|共7页
  • 作者

    Yu Yating; Yang Tuo; Du Pingan;

  • 作者单位

    School of Mechatronics Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Road, Hi-Tech Industrial Development Zone, Chengdu, Sichuan 611731, PR China;

    School of Mechatronics Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Road, Hi-Tech Industrial Development Zone, Chengdu, Sichuan 611731, PR China;

    School of Mechatronics Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Road, Hi-Tech Industrial Development Zone, Chengdu, Sichuan 611731, PR 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

    eddy current displacement measuring; instrument; electromagnetic properties; coil impedance vector-projection approach; coil resistance; coil inductance;

    机译：涡流位移测量;仪器;电磁性能线圈阻抗矢量投影法线圈电阻;线圈电感;

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