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Large-Area Resistive Strain Sensing Sheet for Structural Health Monitoring
Damage significantly influences response of a strain sensor only if it occurs in the proximity of the sensor. Thus, two-dimensional (2D) sensing sheets covering large areas offer reliable early-stage damage detection for structural health monitoring (SHM) applications. This paper presents a scalable...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7085675/ https://www.ncbi.nlm.nih.gov/pubmed/32138331 http://dx.doi.org/10.3390/s20051386 |
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author | Aygun, Levent E. Kumar, Vivek Weaver, Campbell Gerber, Matthew Wagner, Sigurd Verma, Naveen Glisic, Branko Sturm, James C. |
author_facet | Aygun, Levent E. Kumar, Vivek Weaver, Campbell Gerber, Matthew Wagner, Sigurd Verma, Naveen Glisic, Branko Sturm, James C. |
author_sort | Aygun, Levent E. |
collection | PubMed |
description | Damage significantly influences response of a strain sensor only if it occurs in the proximity of the sensor. Thus, two-dimensional (2D) sensing sheets covering large areas offer reliable early-stage damage detection for structural health monitoring (SHM) applications. This paper presents a scalable sensing sheet design consisting of a dense array of thin-film resistive strain sensors. The sensing sheet is fabricated using flexible printed circuit board (Flex-PCB) manufacturing process which enables low-cost and high-volume sensors that can cover large areas. The lab tests on an aluminum beam showed the sheet has a gauge factor of 2.1 and has a low drift of 1.5 [Formula: see text]. The field test on a pedestrian bridge showed the sheet is sensitive enough to track strain induced by the bridge’s temperature variations. The strain measured by the sheet had a root-mean-square (RMS) error of 7 [Formula: see text] compared to a reference strain on the surface, extrapolated from fiber-optic sensors embedded within the bridge structure. The field tests on an existing crack showed that the sensing sheet can track the early-stage damage growth, where it sensed 600 [Formula: see text] peak strain, whereas the nearby sensors on a damage-free surface did not observe significant strain change. |
format | Online Article Text |
id | pubmed-7085675 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-70856752020-04-21 Large-Area Resistive Strain Sensing Sheet for Structural Health Monitoring Aygun, Levent E. Kumar, Vivek Weaver, Campbell Gerber, Matthew Wagner, Sigurd Verma, Naveen Glisic, Branko Sturm, James C. Sensors (Basel) Article Damage significantly influences response of a strain sensor only if it occurs in the proximity of the sensor. Thus, two-dimensional (2D) sensing sheets covering large areas offer reliable early-stage damage detection for structural health monitoring (SHM) applications. This paper presents a scalable sensing sheet design consisting of a dense array of thin-film resistive strain sensors. The sensing sheet is fabricated using flexible printed circuit board (Flex-PCB) manufacturing process which enables low-cost and high-volume sensors that can cover large areas. The lab tests on an aluminum beam showed the sheet has a gauge factor of 2.1 and has a low drift of 1.5 [Formula: see text]. The field test on a pedestrian bridge showed the sheet is sensitive enough to track strain induced by the bridge’s temperature variations. The strain measured by the sheet had a root-mean-square (RMS) error of 7 [Formula: see text] compared to a reference strain on the surface, extrapolated from fiber-optic sensors embedded within the bridge structure. The field tests on an existing crack showed that the sensing sheet can track the early-stage damage growth, where it sensed 600 [Formula: see text] peak strain, whereas the nearby sensors on a damage-free surface did not observe significant strain change. MDPI 2020-03-03 /pmc/articles/PMC7085675/ /pubmed/32138331 http://dx.doi.org/10.3390/s20051386 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Aygun, Levent E. Kumar, Vivek Weaver, Campbell Gerber, Matthew Wagner, Sigurd Verma, Naveen Glisic, Branko Sturm, James C. Large-Area Resistive Strain Sensing Sheet for Structural Health Monitoring |
title | Large-Area Resistive Strain Sensing Sheet for Structural Health Monitoring |
title_full | Large-Area Resistive Strain Sensing Sheet for Structural Health Monitoring |
title_fullStr | Large-Area Resistive Strain Sensing Sheet for Structural Health Monitoring |
title_full_unstemmed | Large-Area Resistive Strain Sensing Sheet for Structural Health Monitoring |
title_short | Large-Area Resistive Strain Sensing Sheet for Structural Health Monitoring |
title_sort | large-area resistive strain sensing sheet for structural health monitoring |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7085675/ https://www.ncbi.nlm.nih.gov/pubmed/32138331 http://dx.doi.org/10.3390/s20051386 |
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