Numerical analysis of the strain values obtained by FBG embedded in a composite material using assumptions about uniaxial stress state of the optical fiber and capillary on the Bragg grating.
One of the issues in the strain measurement with the help of fiber-optic sensors based on Bragg gratings is the calculation of the strain based on the information from the sensor and its correspondence to the material strain. Relationships between the data measured by the sensor and the strain in th...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2019-07-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2471/2517 |
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| _version_ | 1841564252536569856 |
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| author | Valerii P. Matveenko Natalia A. Kosheleva Grigorii S. Serovaev Andrey Yu. Fedorov |
| author_facet | Valerii P. Matveenko Natalia A. Kosheleva Grigorii S. Serovaev Andrey Yu. Fedorov |
| author_sort | Valerii P. Matveenko |
| collection | DOAJ |
| description | One of the issues in the strain measurement with the help of fiber-optic sensors based on Bragg gratings is the calculation of the strain based on the information from the sensor and its correspondence to the material strain. Relationships between the data measured by the sensor and the strain in the Bragg grating have a unique solution under the condition of uniaxial stress state of the fiber, which are not fulfilled when the fiber is embedded in the material. The paper presents the results of numerical simulations with an example of a model problem for a polymer composite material with an embedded optical fiber, which can be surrounded by a resin pocket. The presented results allow to estimate the error of the strain values calculated on the basis of uniaxial stress state assumption of the optical fiber. Based on numerical calculations, parameters of a capillary on an optical fiber in the Bragg grating zone are estimated, ensuring uniaxial stress state of the fiber in the Bragg grating zone. To ensure these conditions, the cross section of the capillary in an isotropic material is a circle, and in an anisotropic material, good results can be obtained with an elliptical cross section. |
| format | Article |
| id | doaj-art-82eec6f756bd4bb2910ccf88a29b6d9a |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2019-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-82eec6f756bd4bb2910ccf88a29b6d9a2025-01-02T23:01:25ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932019-07-01134917718910.3221/IGF-ESIS.49.1910.3221/IGF-ESIS.49.19Numerical analysis of the strain values obtained by FBG embedded in a composite material using assumptions about uniaxial stress state of the optical fiber and capillary on the Bragg grating.Valerii P. MatveenkoNatalia A. KoshelevaGrigorii S. SerovaevAndrey Yu. FedorovOne of the issues in the strain measurement with the help of fiber-optic sensors based on Bragg gratings is the calculation of the strain based on the information from the sensor and its correspondence to the material strain. Relationships between the data measured by the sensor and the strain in the Bragg grating have a unique solution under the condition of uniaxial stress state of the fiber, which are not fulfilled when the fiber is embedded in the material. The paper presents the results of numerical simulations with an example of a model problem for a polymer composite material with an embedded optical fiber, which can be surrounded by a resin pocket. The presented results allow to estimate the error of the strain values calculated on the basis of uniaxial stress state assumption of the optical fiber. Based on numerical calculations, parameters of a capillary on an optical fiber in the Bragg grating zone are estimated, ensuring uniaxial stress state of the fiber in the Bragg grating zone. To ensure these conditions, the cross section of the capillary in an isotropic material is a circle, and in an anisotropic material, good results can be obtained with an elliptical cross section.https://www.fracturae.com/index.php/fis/article/view/2471/2517Single-mode optical fiberFBGpolymer composite materialsensor embedded in the materialcapillary |
| spellingShingle | Valerii P. Matveenko Natalia A. Kosheleva Grigorii S. Serovaev Andrey Yu. Fedorov Numerical analysis of the strain values obtained by FBG embedded in a composite material using assumptions about uniaxial stress state of the optical fiber and capillary on the Bragg grating. Fracture and Structural Integrity Single-mode optical fiber FBG polymer composite material sensor embedded in the material capillary |
| title | Numerical analysis of the strain values obtained by FBG embedded in a composite material using assumptions about uniaxial stress state of the optical fiber and capillary on the Bragg grating. |
| title_full | Numerical analysis of the strain values obtained by FBG embedded in a composite material using assumptions about uniaxial stress state of the optical fiber and capillary on the Bragg grating. |
| title_fullStr | Numerical analysis of the strain values obtained by FBG embedded in a composite material using assumptions about uniaxial stress state of the optical fiber and capillary on the Bragg grating. |
| title_full_unstemmed | Numerical analysis of the strain values obtained by FBG embedded in a composite material using assumptions about uniaxial stress state of the optical fiber and capillary on the Bragg grating. |
| title_short | Numerical analysis of the strain values obtained by FBG embedded in a composite material using assumptions about uniaxial stress state of the optical fiber and capillary on the Bragg grating. |
| title_sort | numerical analysis of the strain values obtained by fbg embedded in a composite material using assumptions about uniaxial stress state of the optical fiber and capillary on the bragg grating |
| topic | Single-mode optical fiber FBG polymer composite material sensor embedded in the material capillary |
| url | https://www.fracturae.com/index.php/fis/article/view/2471/2517 |
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