In-Plane Strain Measurement in Composite Structures with Fiber Bragg Grating Written in Side-Hole Elliptical Core Optical Fiber
In this paper, the application of a fiber Bragg grating written in a highly birefringent side-hole elliptical core optical fiber for two-axial strain measurement is presented. Hybrid optical fiber structures achieved by combining large side-holes and elliptical core result in a very high birefringen...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-12-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/15/1/77 |
| _version_ | 1797498551270375424 |
|---|---|
| author | Karol Wachtarczyk Paweł Gąsior Jerzy Kaleta Alicja Anuszkiewicz Marcel Bender Ralf Schledjewski Paweł Mergo Tomasz Osuch |
| author_facet | Karol Wachtarczyk Paweł Gąsior Jerzy Kaleta Alicja Anuszkiewicz Marcel Bender Ralf Schledjewski Paweł Mergo Tomasz Osuch |
| author_sort | Karol Wachtarczyk |
| collection | DOAJ |
| description | In this paper, the application of a fiber Bragg grating written in a highly birefringent side-hole elliptical core optical fiber for two-axial strain measurement is presented. Hybrid optical fiber structures achieved by combining large side-holes and elliptical core result in a very high birefringence of 1 × 10<sup>−</sup><sup>3</sup> and thus high initial Bragg peak spectral separation of 1.16 nm, as well as a very high transverse force sensitivity, of up to 650 pm/(N/mm) or even −1150 pm/(N/mm), depending on the fiber orientation with respect to the applied force. Due to the ~22 %m/m GeO<sub>2</sub> concentration in the core the fiber being highly photosensitive, which significantly simplifies FBG fabrication by UV illumination without the need for prior hydrogen loading, which worsens thermal stability. Finally, the developed FBGs written in the highly birefringent side-hole elliptical core optical fiber were embedded in the square composite plates and applied for strain measurements. Tests of two-directional four-point bending have shown usability of such FBG for two-axial in-plane strain measurement with a single FBG in iso-thermal conditions. |
| first_indexed | 2024-03-10T03:34:57Z |
| format | Article |
| id | doaj.art-9fd0747c2729447ab15542ea32dec4c1 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T03:34:57Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-9fd0747c2729447ab15542ea32dec4c12023-11-23T11:47:46ZengMDPI AGMaterials1996-19442021-12-011517710.3390/ma15010077In-Plane Strain Measurement in Composite Structures with Fiber Bragg Grating Written in Side-Hole Elliptical Core Optical FiberKarol Wachtarczyk0Paweł Gąsior1Jerzy Kaleta2Alicja Anuszkiewicz3Marcel Bender4Ralf Schledjewski5Paweł Mergo6Tomasz Osuch7Department of Mechanical Engineering, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-370 Wroclaw, PolandDepartment of Mechanical Engineering, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-370 Wroclaw, PolandDepartment of Mechanical Engineering, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-370 Wroclaw, PolandFaculty of Electronics and Information Technology, Institute of Electronic Systems, Warsaw University of Technology, Nowowiejska 15/19, 00-665 Warsaw, PolandProcessing of Composites Group, Montanuniversität Leoben, Otto Glöckel-Straße 2/III, 8700 Leoben, AustriaProcessing of Composites Group, Montanuniversität Leoben, Otto Glöckel-Straße 2/III, 8700 Leoben, AustriaFaculty of Chemistry, Institute of Chemical Sciences, Maria Curie-Skłodowska University, pl. M. Curie-Skłodowskiej 3, 20-031 Lublin, PolandFaculty of Electronics and Information Technology, Institute of Electronic Systems, Warsaw University of Technology, Nowowiejska 15/19, 00-665 Warsaw, PolandIn this paper, the application of a fiber Bragg grating written in a highly birefringent side-hole elliptical core optical fiber for two-axial strain measurement is presented. Hybrid optical fiber structures achieved by combining large side-holes and elliptical core result in a very high birefringence of 1 × 10<sup>−</sup><sup>3</sup> and thus high initial Bragg peak spectral separation of 1.16 nm, as well as a very high transverse force sensitivity, of up to 650 pm/(N/mm) or even −1150 pm/(N/mm), depending on the fiber orientation with respect to the applied force. Due to the ~22 %m/m GeO<sub>2</sub> concentration in the core the fiber being highly photosensitive, which significantly simplifies FBG fabrication by UV illumination without the need for prior hydrogen loading, which worsens thermal stability. Finally, the developed FBGs written in the highly birefringent side-hole elliptical core optical fiber were embedded in the square composite plates and applied for strain measurements. Tests of two-directional four-point bending have shown usability of such FBG for two-axial in-plane strain measurement with a single FBG in iso-thermal conditions.https://www.mdpi.com/1996-1944/15/1/77fiber optic sensorfiber Bragg gratinghigh birefringent fibersside-hole optical fibercarbon fiber reinforced polymermulti-axial strain sensing |
| spellingShingle | Karol Wachtarczyk Paweł Gąsior Jerzy Kaleta Alicja Anuszkiewicz Marcel Bender Ralf Schledjewski Paweł Mergo Tomasz Osuch In-Plane Strain Measurement in Composite Structures with Fiber Bragg Grating Written in Side-Hole Elliptical Core Optical Fiber Materials fiber optic sensor fiber Bragg grating high birefringent fibers side-hole optical fiber carbon fiber reinforced polymer multi-axial strain sensing |
| title | In-Plane Strain Measurement in Composite Structures with Fiber Bragg Grating Written in Side-Hole Elliptical Core Optical Fiber |
| title_full | In-Plane Strain Measurement in Composite Structures with Fiber Bragg Grating Written in Side-Hole Elliptical Core Optical Fiber |
| title_fullStr | In-Plane Strain Measurement in Composite Structures with Fiber Bragg Grating Written in Side-Hole Elliptical Core Optical Fiber |
| title_full_unstemmed | In-Plane Strain Measurement in Composite Structures with Fiber Bragg Grating Written in Side-Hole Elliptical Core Optical Fiber |
| title_short | In-Plane Strain Measurement in Composite Structures with Fiber Bragg Grating Written in Side-Hole Elliptical Core Optical Fiber |
| title_sort | in plane strain measurement in composite structures with fiber bragg grating written in side hole elliptical core optical fiber |
| topic | fiber optic sensor fiber Bragg grating high birefringent fibers side-hole optical fiber carbon fiber reinforced polymer multi-axial strain sensing |
| url | https://www.mdpi.com/1996-1944/15/1/77 |
| work_keys_str_mv | AT karolwachtarczyk inplanestrainmeasurementincompositestructureswithfiberbragggratingwritteninsideholeellipticalcoreopticalfiber AT pawełgasior inplanestrainmeasurementincompositestructureswithfiberbragggratingwritteninsideholeellipticalcoreopticalfiber AT jerzykaleta inplanestrainmeasurementincompositestructureswithfiberbragggratingwritteninsideholeellipticalcoreopticalfiber AT alicjaanuszkiewicz inplanestrainmeasurementincompositestructureswithfiberbragggratingwritteninsideholeellipticalcoreopticalfiber AT marcelbender inplanestrainmeasurementincompositestructureswithfiberbragggratingwritteninsideholeellipticalcoreopticalfiber AT ralfschledjewski inplanestrainmeasurementincompositestructureswithfiberbragggratingwritteninsideholeellipticalcoreopticalfiber AT pawełmergo inplanestrainmeasurementincompositestructureswithfiberbragggratingwritteninsideholeellipticalcoreopticalfiber AT tomaszosuch inplanestrainmeasurementincompositestructureswithfiberbragggratingwritteninsideholeellipticalcoreopticalfiber |