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

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Title: A new eddy current displacement measuring instrument independent of sample electromagnetic properties
Authors: Yating, Yu yuyating-uestc@hotmail.com, Tuo, Yang1, Pingan, Du1
Source: NDT & E International. Jun2012, Vol. 48, p16-22. 7p.
Subjects: Eddy currents (Electric), Electromagnetic fields, Nondestructive testing, Magnetic properties, Electric conductivity, Magnetic permeability, Electric inductance
Abstract: Abstract: 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. [Copyright &y& Elsevier]
Copyright of NDT & E International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 74109328
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: A new eddy current displacement measuring instrument independent of sample electromagnetic properties
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  Data: <searchLink fieldCode="AR" term="%22Yating%2C+Yu%22">Yating, Yu</searchLink><i> yuyating-uestc@hotmail.com</i><br /><searchLink fieldCode="AR" term="%22Tuo%2C+Yang%22">Tuo, Yang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Pingan%2C+Du%22">Pingan, Du</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22NDT+%26+E+International%22">NDT & E International</searchLink>. Jun2012, Vol. 48, p16-22. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Eddy+currents+%28Electric%29%22">Eddy currents (Electric)</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+fields%22">Electromagnetic fields</searchLink><br /><searchLink fieldCode="DE" term="%22Nondestructive+testing%22">Nondestructive testing</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+properties%22">Magnetic properties</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+conductivity%22">Electric conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+permeability%22">Magnetic permeability</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+inductance%22">Electric inductance</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: 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. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of NDT & E International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.ndteint.2012.02.001
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      – Code: eng
        Text: English
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        PageCount: 7
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      – SubjectFull: Eddy currents (Electric)
        Type: general
      – SubjectFull: Electromagnetic fields
        Type: general
      – SubjectFull: Nondestructive testing
        Type: general
      – SubjectFull: Magnetic properties
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      – SubjectFull: Electric conductivity
        Type: general
      – SubjectFull: Magnetic permeability
        Type: general
      – SubjectFull: Electric inductance
        Type: general
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      – TitleFull: A new eddy current displacement measuring instrument independent of sample electromagnetic properties
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              M: 06
              Text: Jun2012
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              Y: 2012
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              Value: 48
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