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Twisted Dual-Cycle Fiber Optic Bending Loss Characteristics for Strain Measurement

The intensity-based fiber optic sensor (FOS) head using twisted dual-cycle bending loss is proposed and experimentally demonstrate. The bending loss characteristics depend on the steel wire radius, number, and distance. To determine the effects of these parameters, two samples in each of seven confi...

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Autores principales: Choi, Sang-Jin, Jeong, Seong-Yong, Lee, Changhyun, Park, Kwon Gyu, Pan, Jae-Kyung
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6263929/
https://www.ncbi.nlm.nih.gov/pubmed/30453593
http://dx.doi.org/10.3390/s18114009
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author Choi, Sang-Jin
Jeong, Seong-Yong
Lee, Changhyun
Park, Kwon Gyu
Pan, Jae-Kyung
author_facet Choi, Sang-Jin
Jeong, Seong-Yong
Lee, Changhyun
Park, Kwon Gyu
Pan, Jae-Kyung
author_sort Choi, Sang-Jin
collection PubMed
description The intensity-based fiber optic sensor (FOS) head using twisted dual-cycle bending loss is proposed and experimentally demonstrate. The bending loss characteristics depend on the steel wire radius, number, and distance. To determine the effects of these parameters, two samples in each of seven configuration cases of the proposed FOS head were bonded to fiber reinforced plastics coupons, and tensile and flexural strain tests were repeated five times for each coupon. The bending loss of the manufactured FOS heads was measured and converted to the tensile and flexural strain as a function of configuration cases. The measurement range, sensitivity, and average measurement errors of the tensile load and flexural strain were 4.5 kN and 1760 με, 0.70 to 3.99 dB/kN and 0.930 to 6.554 dB/mm, and 57.7 N, and 42.6 με, respectively. The sensing range of FOS head were 82 to 138 mm according to configuration cases. These results indicate that it is possible to measure load, tensile strain, and flexural strain using the proposed FOS head, and demonstrate that the sensitivities, the operating ranges, and the sensing range can be adjusted depending on the deformation characteristics of the measurement target.
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spelling pubmed-62639292018-12-12 Twisted Dual-Cycle Fiber Optic Bending Loss Characteristics for Strain Measurement Choi, Sang-Jin Jeong, Seong-Yong Lee, Changhyun Park, Kwon Gyu Pan, Jae-Kyung Sensors (Basel) Article The intensity-based fiber optic sensor (FOS) head using twisted dual-cycle bending loss is proposed and experimentally demonstrate. The bending loss characteristics depend on the steel wire radius, number, and distance. To determine the effects of these parameters, two samples in each of seven configuration cases of the proposed FOS head were bonded to fiber reinforced plastics coupons, and tensile and flexural strain tests were repeated five times for each coupon. The bending loss of the manufactured FOS heads was measured and converted to the tensile and flexural strain as a function of configuration cases. The measurement range, sensitivity, and average measurement errors of the tensile load and flexural strain were 4.5 kN and 1760 με, 0.70 to 3.99 dB/kN and 0.930 to 6.554 dB/mm, and 57.7 N, and 42.6 με, respectively. The sensing range of FOS head were 82 to 138 mm according to configuration cases. These results indicate that it is possible to measure load, tensile strain, and flexural strain using the proposed FOS head, and demonstrate that the sensitivities, the operating ranges, and the sensing range can be adjusted depending on the deformation characteristics of the measurement target. MDPI 2018-11-16 /pmc/articles/PMC6263929/ /pubmed/30453593 http://dx.doi.org/10.3390/s18114009 Text en © 2018 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
Choi, Sang-Jin
Jeong, Seong-Yong
Lee, Changhyun
Park, Kwon Gyu
Pan, Jae-Kyung
Twisted Dual-Cycle Fiber Optic Bending Loss Characteristics for Strain Measurement
title Twisted Dual-Cycle Fiber Optic Bending Loss Characteristics for Strain Measurement
title_full Twisted Dual-Cycle Fiber Optic Bending Loss Characteristics for Strain Measurement
title_fullStr Twisted Dual-Cycle Fiber Optic Bending Loss Characteristics for Strain Measurement
title_full_unstemmed Twisted Dual-Cycle Fiber Optic Bending Loss Characteristics for Strain Measurement
title_short Twisted Dual-Cycle Fiber Optic Bending Loss Characteristics for Strain Measurement
title_sort twisted dual-cycle fiber optic bending loss characteristics for strain measurement
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6263929/
https://www.ncbi.nlm.nih.gov/pubmed/30453593
http://dx.doi.org/10.3390/s18114009
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