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A method for correcting field strain measurements to account for temperature effects.

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Title: A method for correcting field strain measurements to account for temperature effects.
Authors: Meehan, Christopher L.1 cmeehan@udel.edu, Talebi, Majid1 mtalebi@udel.edu
Source: Geotextiles & Geomembranes. Aug2017, Vol. 45 Issue 4, p250-260. 11p.
Subjects: Reinforced soils, Geosynthetics, Soil mechanics, Temperature effect, Thermistors, Wheatstone bridge
Abstract: Measurements of deformation and strain are of critical importance for the structural health monitoring of geosynthetic reinforced soil (GRS) structures. For some commonly used wiring configurations and sensors, field strain measurements can exhibit apparent strains that are caused by changes in wire temperature or changes in gauge temperature, which do not correspond to changes in actual strain in the geosynthetic. Correcting for these effects is important for separating out real structural behavior from wiring and sensor issues, and is imperative for avoiding false trigger warnings in automated instrumentation reporting systems. The current paper consequently presents a method for correcting field strain measurements to account for temperature effects. Data collected from sensors embedded in a heavily-instrumented GRS abutment over a two-year monitoring period is presented. The distributed thermistor array embedded in the GRS abutment is shown to be particularly useful for understanding temperature effects on the measured foil strain gauge data. The presented approach and associated framework for data correction are useful for practicing engineers and other researchers, as the general concepts from this study can be applied to data collected from many instrumented geosynthetic field projects. [ABSTRACT FROM AUTHOR]
Copyright of Geotextiles & Geomembranes 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: 123574062
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
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  Data: A method for correcting field strain measurements to account for temperature effects.
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  Data: <searchLink fieldCode="AR" term="%22Meehan%2C+Christopher+L%2E%22">Meehan, Christopher L.</searchLink><relatesTo>1</relatesTo><i> cmeehan@udel.edu</i><br /><searchLink fieldCode="AR" term="%22Talebi%2C+Majid%22">Talebi, Majid</searchLink><relatesTo>1</relatesTo><i> mtalebi@udel.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Geotextiles+%26+Geomembranes%22">Geotextiles & Geomembranes</searchLink>. Aug2017, Vol. 45 Issue 4, p250-260. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Reinforced+soils%22">Reinforced soils</searchLink><br /><searchLink fieldCode="DE" term="%22Geosynthetics%22">Geosynthetics</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+mechanics%22">Soil mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+effect%22">Temperature effect</searchLink><br /><searchLink fieldCode="DE" term="%22Thermistors%22">Thermistors</searchLink><br /><searchLink fieldCode="DE" term="%22Wheatstone+bridge%22">Wheatstone bridge</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Measurements of deformation and strain are of critical importance for the structural health monitoring of geosynthetic reinforced soil (GRS) structures. For some commonly used wiring configurations and sensors, field strain measurements can exhibit apparent strains that are caused by changes in wire temperature or changes in gauge temperature, which do not correspond to changes in actual strain in the geosynthetic. Correcting for these effects is important for separating out real structural behavior from wiring and sensor issues, and is imperative for avoiding false trigger warnings in automated instrumentation reporting systems. The current paper consequently presents a method for correcting field strain measurements to account for temperature effects. Data collected from sensors embedded in a heavily-instrumented GRS abutment over a two-year monitoring period is presented. The distributed thermistor array embedded in the GRS abutment is shown to be particularly useful for understanding temperature effects on the measured foil strain gauge data. The presented approach and associated framework for data correction are useful for practicing engineers and other researchers, as the general concepts from this study can be applied to data collected from many instrumented geosynthetic field projects. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Geotextiles & Geomembranes 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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=123574062
RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1016/j.geotexmem.2017.02.005
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 250
    Subjects:
      – SubjectFull: Reinforced soils
        Type: general
      – SubjectFull: Geosynthetics
        Type: general
      – SubjectFull: Soil mechanics
        Type: general
      – SubjectFull: Temperature effect
        Type: general
      – SubjectFull: Thermistors
        Type: general
      – SubjectFull: Wheatstone bridge
        Type: general
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      – TitleFull: A method for correcting field strain measurements to account for temperature effects.
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            NameFull: Meehan, Christopher L.
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            NameFull: Talebi, Majid
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            – D: 01
              M: 08
              Text: Aug2017
              Type: published
              Y: 2017
          Identifiers:
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              Value: 02661144
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              Value: 45
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              Value: 4
          Titles:
            – TitleFull: Geotextiles & Geomembranes
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