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Design and validation of a prototype load-cell-free tensile testing device based on DC motor electrical characteristics.

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Title: Design and validation of a prototype load-cell-free tensile testing device based on DC motor electrical characteristics.
Authors: Çabuk, Nihat1 (AUTHOR) nihatcabuk@aksaray.edu.tr
Source: Journal of Mechanical Science & Technology. Jun2026, Vol. 40 Issue 6, p4239-4247. 9p.
Subjects: Testing equipment, Electric motors, Stress-strain curves, Gages, Tensile tests, Least squares, Calibration
Abstract: Conventional tensile testing systems rely on load cells as their primary force-sensing component. In contrast, this study presents a prototype platform that estimates tensile force using only the electromechanical behavior of a DC motor. A calibration procedure with a transient force gauge enabled the development of a force prediction model based on linear regression. Experimental validation on low-strength materials (PLA and soft plastics) showed a mean absolute percentage error of less than 5 %. Time-domain responses confirmed close agreement between predicted and measured forces, while approximate engineering strain derived from actuator displacement due to noisy extensometer signals in the limited experimental setup was used to generate stress-strain curves. The approximate engineering strain derived from actuator displacement was used to generate representative stress-strain curves for qualitative verification. Despite nonlinear effects such as friction and thermal slip, the prototype provides a practical proof-of-concept platform for educational and early-stage research applications. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Mechanical Science & Technology is the property of Springer Nature 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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DbLabel: Engineering Source
An: 194452105
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Design and validation of a prototype load-cell-free tensile testing device based on DC motor electrical characteristics.
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  Data: <searchLink fieldCode="AR" term="%22Çabuk%2C+Nihat%22">Çabuk, Nihat</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> nihatcabuk@aksaray.edu.tr</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Mechanical+Science+%26+Technology%22">Journal of Mechanical Science & Technology</searchLink>. Jun2026, Vol. 40 Issue 6, p4239-4247. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Testing+equipment%22">Testing equipment</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+motors%22">Electric motors</searchLink><br /><searchLink fieldCode="DE" term="%22Stress-strain+curves%22">Stress-strain curves</searchLink><br /><searchLink fieldCode="DE" term="%22Gages%22">Gages</searchLink><br /><searchLink fieldCode="DE" term="%22Tensile+tests%22">Tensile tests</searchLink><br /><searchLink fieldCode="DE" term="%22Least+squares%22">Least squares</searchLink><br /><searchLink fieldCode="DE" term="%22Calibration%22">Calibration</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Conventional tensile testing systems rely on load cells as their primary force-sensing component. In contrast, this study presents a prototype platform that estimates tensile force using only the electromechanical behavior of a DC motor. A calibration procedure with a transient force gauge enabled the development of a force prediction model based on linear regression. Experimental validation on low-strength materials (PLA and soft plastics) showed a mean absolute percentage error of less than 5 %. Time-domain responses confirmed close agreement between predicted and measured forces, while approximate engineering strain derived from actuator displacement due to noisy extensometer signals in the limited experimental setup was used to generate stress-strain curves. The approximate engineering strain derived from actuator displacement was used to generate representative stress-strain curves for qualitative verification. Despite nonlinear effects such as friction and thermal slip, the prototype provides a practical proof-of-concept platform for educational and early-stage research applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Mechanical Science & Technology is the property of Springer Nature 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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      – Type: doi
        Value: 10.1007/s12206-026-0516-2
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 4239
    Subjects:
      – SubjectFull: Testing equipment
        Type: general
      – SubjectFull: Electric motors
        Type: general
      – SubjectFull: Stress-strain curves
        Type: general
      – SubjectFull: Gages
        Type: general
      – SubjectFull: Tensile tests
        Type: general
      – SubjectFull: Least squares
        Type: general
      – SubjectFull: Calibration
        Type: general
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      – TitleFull: Design and validation of a prototype load-cell-free tensile testing device based on DC motor electrical characteristics.
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            – D: 01
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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