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Compliant Mechanism-Based Sensor for Large Strain Measurements Employing Fiber Optics
We propose a sensor design for measurement of large strains where direct application of a fiber optic strain gauge is impossible due to the stiffness mismatch between the optical fiber and the structure under test. The sensor design is based on a rhombus type compliant mechanism, which functions to...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9182844/ https://www.ncbi.nlm.nih.gov/pubmed/35684610 http://dx.doi.org/10.3390/s22113987 |
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author | Shiryayev, Oleg Vahdati, Nader Yap, Fook Fah Butt, Haider |
author_facet | Shiryayev, Oleg Vahdati, Nader Yap, Fook Fah Butt, Haider |
author_sort | Shiryayev, Oleg |
collection | PubMed |
description | We propose a sensor design for measurement of large strains where direct application of a fiber optic strain gauge is impossible due to the stiffness mismatch between the optical fiber and the structure under test. The sensor design is based on a rhombus type compliant mechanism, which functions to attenuate input strain and transfer it to the ends of the sensing beam with the mounted optical strain gauge. We developed an analytical model of the sensor, which allows us to relate actuation forces, input displacement/strain, and output strain. The analytical model was verified with the finite element analysis and validated against an experimental prototype. The prototype sensor was able to handle input strains exceeding ±2.5 × 10(5) µε. Potential application areas of the proposed sensor include compliant elastomeric structures, wearables, and soft robotics. |
format | Online Article Text |
id | pubmed-9182844 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-91828442022-06-10 Compliant Mechanism-Based Sensor for Large Strain Measurements Employing Fiber Optics Shiryayev, Oleg Vahdati, Nader Yap, Fook Fah Butt, Haider Sensors (Basel) Article We propose a sensor design for measurement of large strains where direct application of a fiber optic strain gauge is impossible due to the stiffness mismatch between the optical fiber and the structure under test. The sensor design is based on a rhombus type compliant mechanism, which functions to attenuate input strain and transfer it to the ends of the sensing beam with the mounted optical strain gauge. We developed an analytical model of the sensor, which allows us to relate actuation forces, input displacement/strain, and output strain. The analytical model was verified with the finite element analysis and validated against an experimental prototype. The prototype sensor was able to handle input strains exceeding ±2.5 × 10(5) µε. Potential application areas of the proposed sensor include compliant elastomeric structures, wearables, and soft robotics. MDPI 2022-05-24 /pmc/articles/PMC9182844/ /pubmed/35684610 http://dx.doi.org/10.3390/s22113987 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Shiryayev, Oleg Vahdati, Nader Yap, Fook Fah Butt, Haider Compliant Mechanism-Based Sensor for Large Strain Measurements Employing Fiber Optics |
title | Compliant Mechanism-Based Sensor for Large Strain Measurements Employing Fiber Optics |
title_full | Compliant Mechanism-Based Sensor for Large Strain Measurements Employing Fiber Optics |
title_fullStr | Compliant Mechanism-Based Sensor for Large Strain Measurements Employing Fiber Optics |
title_full_unstemmed | Compliant Mechanism-Based Sensor for Large Strain Measurements Employing Fiber Optics |
title_short | Compliant Mechanism-Based Sensor for Large Strain Measurements Employing Fiber Optics |
title_sort | compliant mechanism-based sensor for large strain measurements employing fiber optics |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9182844/ https://www.ncbi.nlm.nih.gov/pubmed/35684610 http://dx.doi.org/10.3390/s22113987 |
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