Inkjet-Printed Flexible Strain-Gauge Sensor on Polymer Substrate: Topographical Analysis of Sensitivity

Inkjet-printed strain gauges on flexible substrates have recently been investigated for biomedical motion detection as well as the monitoring of structural deformation. This study performed a topographical analysis of an inkjet-printed strain gauge constructed using silver conductive ink on a PET (p...

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Main Authors: Hyunkyoo Kang, Seokjin Kim, Jaehak Shin, Sunglim Ko
Format: Article
Language:English
Published: MDPI AG 2022-03-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/12/6/3193
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author Hyunkyoo Kang
Seokjin Kim
Jaehak Shin
Sunglim Ko
author_facet Hyunkyoo Kang
Seokjin Kim
Jaehak Shin
Sunglim Ko
author_sort Hyunkyoo Kang
collection DOAJ
description Inkjet-printed strain gauges on flexible substrates have recently been investigated for biomedical motion detection as well as the monitoring of structural deformation. This study performed a topographical analysis of an inkjet-printed strain gauge constructed using silver conductive ink on a PET (polyethylene terephthalate) substrate. Serpentine strain-gauge sensors of various thicknesses and widths were fabricated using inkjet printing and oven sintering. The fabricated gauge sensors were attached to curved surfaces, and gauge factors ranging from 2.047 to 3.098 were recorded. We found that the cross-sectional area of the printed strain gauge was proportional to the gauge factor. The correlation was mathematically modelled as <i>y</i> = 0.4167ln(<i>x</i>) + 1.3837, for which the coefficient of determination (<i>R</i><sup>2</sup>) was 0.8383.
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spelling doaj.art-336086f0860943b4a390dab0765c37ed2023-11-24T00:25:20ZengMDPI AGApplied Sciences2076-34172022-03-01126319310.3390/app12063193Inkjet-Printed Flexible Strain-Gauge Sensor on Polymer Substrate: Topographical Analysis of SensitivityHyunkyoo Kang0Seokjin Kim1Jaehak Shin2Sunglim Ko3Department of Mechatronics Engineering, Konkuk University Glocal Campus, 268 Chungwondaero, Chungju-si 27478, KoreaDepartment of Mechatronics Engineering, Konkuk University Glocal Campus, 268 Chungwondaero, Chungju-si 27478, KoreaDepartment of Mechanical Design and Production Engineering, Konkuk University, 120 Neungdong-ro, Seoul 05029, KoreaDepartment of Mechanical Design and Production Engineering, Konkuk University, 120 Neungdong-ro, Seoul 05029, KoreaInkjet-printed strain gauges on flexible substrates have recently been investigated for biomedical motion detection as well as the monitoring of structural deformation. This study performed a topographical analysis of an inkjet-printed strain gauge constructed using silver conductive ink on a PET (polyethylene terephthalate) substrate. Serpentine strain-gauge sensors of various thicknesses and widths were fabricated using inkjet printing and oven sintering. The fabricated gauge sensors were attached to curved surfaces, and gauge factors ranging from 2.047 to 3.098 were recorded. We found that the cross-sectional area of the printed strain gauge was proportional to the gauge factor. The correlation was mathematically modelled as <i>y</i> = 0.4167ln(<i>x</i>) + 1.3837, for which the coefficient of determination (<i>R</i><sup>2</sup>) was 0.8383.https://www.mdpi.com/2076-3417/12/6/3193additive manufacturinginkjetprinted strain gaugetopography
spellingShingle Hyunkyoo Kang
Seokjin Kim
Jaehak Shin
Sunglim Ko
Inkjet-Printed Flexible Strain-Gauge Sensor on Polymer Substrate: Topographical Analysis of Sensitivity
Applied Sciences
additive manufacturing
inkjet
printed strain gauge
topography
title Inkjet-Printed Flexible Strain-Gauge Sensor on Polymer Substrate: Topographical Analysis of Sensitivity
title_full Inkjet-Printed Flexible Strain-Gauge Sensor on Polymer Substrate: Topographical Analysis of Sensitivity
title_fullStr Inkjet-Printed Flexible Strain-Gauge Sensor on Polymer Substrate: Topographical Analysis of Sensitivity
title_full_unstemmed Inkjet-Printed Flexible Strain-Gauge Sensor on Polymer Substrate: Topographical Analysis of Sensitivity
title_short Inkjet-Printed Flexible Strain-Gauge Sensor on Polymer Substrate: Topographical Analysis of Sensitivity
title_sort inkjet printed flexible strain gauge sensor on polymer substrate topographical analysis of sensitivity
topic additive manufacturing
inkjet
printed strain gauge
topography
url https://www.mdpi.com/2076-3417/12/6/3193
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AT seokjinkim inkjetprintedflexiblestraingaugesensoronpolymersubstratetopographicalanalysisofsensitivity
AT jaehakshin inkjetprintedflexiblestraingaugesensoronpolymersubstratetopographicalanalysisofsensitivity
AT sunglimko inkjetprintedflexiblestraingaugesensoronpolymersubstratetopographicalanalysisofsensitivity