Displacement measurement of soft material indentation using light intensity
This paper studies proof of concept in which soft material displacement during indentation is measured by a change in light intensity as the indenter is pushed into a soft material. The Light Dependent Resistor (LDR) sensor, which is embedded within a transparent hemispheric indenter, is used to mea...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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UiTM Press
2022
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| Online Access: | https://umpir.ump.edu.my/id/eprint/44281/ |
| _version_ | 1848827322235355136 |
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| author | Mohd Nadzeri, Omar Mohd Hasnun Ariff, Hassan |
| author_facet | Mohd Nadzeri, Omar Mohd Hasnun Ariff, Hassan |
| author_sort | Mohd Nadzeri, Omar |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | This paper studies proof of concept in which soft material displacement during indentation is measured by a change in light intensity as the indenter is pushed into a soft material. The Light Dependent Resistor (LDR) sensor, which is embedded within a transparent hemispheric indenter, is used to measure the intensity of light while the indenter is on the surface and within the soft material. The change in light intensity contributes to a gradient that can be used to calculate the displacement of the soft material. The calculated difference in light intensity is converted into a displacement with the mean conversion factor obtained from the calibration equation. Measurements were carried out on three silicone samples with varying elastic properties over a range of different light intensities. By referring to linear regression and Rsquared values, the proposed concept has high consistency in measuring the difference of light intensity for various materials at different initial light intensities with more than 95% of R-squared values. In addition, the mean of variance between measurements, reflecting repeatability, is within an outstanding 1.5%. In the meantime, the accuracy of the proposed concept tested concerning the actual displacement is less than 10% of the variation. With promising results, the proposed design can be applied as a standalone technology or as an extension to a hand-held soft material characterization device for further improvement. |
| first_indexed | 2025-11-15T03:58:52Z |
| format | Article |
| id | ump-44281 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T03:58:52Z |
| publishDate | 2022 |
| publisher | UiTM Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-442812025-08-11T03:13:43Z https://umpir.ump.edu.my/id/eprint/44281/ Displacement measurement of soft material indentation using light intensity Mohd Nadzeri, Omar Mohd Hasnun Ariff, Hassan QC Physics TJ Mechanical engineering and machinery TK Electrical engineering. Electronics Nuclear engineering This paper studies proof of concept in which soft material displacement during indentation is measured by a change in light intensity as the indenter is pushed into a soft material. The Light Dependent Resistor (LDR) sensor, which is embedded within a transparent hemispheric indenter, is used to measure the intensity of light while the indenter is on the surface and within the soft material. The change in light intensity contributes to a gradient that can be used to calculate the displacement of the soft material. The calculated difference in light intensity is converted into a displacement with the mean conversion factor obtained from the calibration equation. Measurements were carried out on three silicone samples with varying elastic properties over a range of different light intensities. By referring to linear regression and Rsquared values, the proposed concept has high consistency in measuring the difference of light intensity for various materials at different initial light intensities with more than 95% of R-squared values. In addition, the mean of variance between measurements, reflecting repeatability, is within an outstanding 1.5%. In the meantime, the accuracy of the proposed concept tested concerning the actual displacement is less than 10% of the variation. With promising results, the proposed design can be applied as a standalone technology or as an extension to a hand-held soft material characterization device for further improvement. UiTM Press 2022-01 Article PeerReviewed pdf en https://umpir.ump.edu.my/id/eprint/44281/1/Displacement%20measurement%20of%20soft%20material%20indentation.pdf Mohd Nadzeri, Omar and Mohd Hasnun Ariff, Hassan (2022) Displacement measurement of soft material indentation using light intensity. Journal of Mechanical Engineering, 19 (1). pp. 21-38. ISSN 1823-5514. (Published) https://jmeche.uitm.edu.my/wp-content/uploads/2022/01/2.%20RI-19-1-P21-07.pdf https://jmeche.uitm.edu.my/wp-content/uploads/2022/01/2.%20RI-19-1-P21-07.pdf https://jmeche.uitm.edu.my/wp-content/uploads/2022/01/2.%20RI-19-1-P21-07.pdf |
| spellingShingle | QC Physics TJ Mechanical engineering and machinery TK Electrical engineering. Electronics Nuclear engineering Mohd Nadzeri, Omar Mohd Hasnun Ariff, Hassan Displacement measurement of soft material indentation using light intensity |
| title | Displacement measurement of soft material indentation using light intensity |
| title_full | Displacement measurement of soft material indentation using light intensity |
| title_fullStr | Displacement measurement of soft material indentation using light intensity |
| title_full_unstemmed | Displacement measurement of soft material indentation using light intensity |
| title_short | Displacement measurement of soft material indentation using light intensity |
| title_sort | displacement measurement of soft material indentation using light intensity |
| topic | QC Physics TJ Mechanical engineering and machinery TK Electrical engineering. Electronics Nuclear engineering |
| url | https://umpir.ump.edu.my/id/eprint/44281/ https://umpir.ump.edu.my/id/eprint/44281/ https://umpir.ump.edu.my/id/eprint/44281/ |