Road Pavement Structural Health Monitoring by Embedded Fiber-Bragg-Grating-Based Optical Sensors
Fiber Bragg grating (FBG) optical sensors are state-of-the-art technology that can be integrated into the road structure, providing real-time traffic-induced strain readings and ensuring the monitoring of the road’s structural health. By implementing specific FBG sensors, it is possible to detect ea...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/12/4581 |
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| author | Janis Braunfelds Ugis Senkans Peteris Skels Rims Janeliukstis Jurgis Porins Sandis Spolitis Vjaceslavs Bobrovs |
| author_facet | Janis Braunfelds Ugis Senkans Peteris Skels Rims Janeliukstis Jurgis Porins Sandis Spolitis Vjaceslavs Bobrovs |
| author_sort | Janis Braunfelds |
| collection | DOAJ |
| description | Fiber Bragg grating (FBG) optical sensors are state-of-the-art technology that can be integrated into the road structure, providing real-time traffic-induced strain readings and ensuring the monitoring of the road’s structural health. By implementing specific FBG sensors, it is possible to detect each vehicle’s axle count and the induced strain changes in the road structure. In this study, FBG sensors are embedded at the top of the 240-mm-thick cement-treated reclaimed asphalt pavement mixture layer of the road (specifically, 25 mm deep within the road). Optical sensors’ signal interrogation units are used to measure the strain and temperature and collect data of the road’s passing vehicles, starting from passenger cars that have two axles and up to heavy trucks that have six axles. Passenger cars with 2 axles generate a typical (90% events) strain of 0.8–4.1 μm/m, the 2-axle minibus 5.5–8.5 μm/m, 2–3-axle trucks 11–26 μm/m, but 4–6-axle trucks 14–36 μm/m per each axle. A large number of influencing parameters determine the pavement design leading to the great uncertainty in the prediction of the strain at the boundary between the asphalt surface and cement-treated base layers. Real-time strain and temperature measurements help to understand the actual behavior of the pavement structure under an applied load, thus assisting in validating the proposed pavement design. |
| first_indexed | 2024-03-09T22:32:02Z |
| format | Article |
| id | doaj.art-8a0ab12b615d42338d70e4b91d2a97b2 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T22:32:02Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-8a0ab12b615d42338d70e4b91d2a97b22023-11-23T18:55:39ZengMDPI AGSensors1424-82202022-06-012212458110.3390/s22124581Road Pavement Structural Health Monitoring by Embedded Fiber-Bragg-Grating-Based Optical SensorsJanis Braunfelds0Ugis Senkans1Peteris Skels2Rims Janeliukstis3Jurgis Porins4Sandis Spolitis5Vjaceslavs Bobrovs6Communication Technologies Research Center, Riga Technical University, LV-1048 Riga, LatviaCommunication Technologies Research Center, Riga Technical University, LV-1048 Riga, LatviaDepartment of Roads and Bridges, Riga Technical University, LV-1048 Riga, LatviaInstitute of Materials and Structures, Riga Technical University, LV-1048 Riga, LatviaInstitute of Telecommunications, Riga Technical University, LV-1048 Riga, LatviaCommunication Technologies Research Center, Riga Technical University, LV-1048 Riga, LatviaInstitute of Telecommunications, Riga Technical University, LV-1048 Riga, LatviaFiber Bragg grating (FBG) optical sensors are state-of-the-art technology that can be integrated into the road structure, providing real-time traffic-induced strain readings and ensuring the monitoring of the road’s structural health. By implementing specific FBG sensors, it is possible to detect each vehicle’s axle count and the induced strain changes in the road structure. In this study, FBG sensors are embedded at the top of the 240-mm-thick cement-treated reclaimed asphalt pavement mixture layer of the road (specifically, 25 mm deep within the road). Optical sensors’ signal interrogation units are used to measure the strain and temperature and collect data of the road’s passing vehicles, starting from passenger cars that have two axles and up to heavy trucks that have six axles. Passenger cars with 2 axles generate a typical (90% events) strain of 0.8–4.1 μm/m, the 2-axle minibus 5.5–8.5 μm/m, 2–3-axle trucks 11–26 μm/m, but 4–6-axle trucks 14–36 μm/m per each axle. A large number of influencing parameters determine the pavement design leading to the great uncertainty in the prediction of the strain at the boundary between the asphalt surface and cement-treated base layers. Real-time strain and temperature measurements help to understand the actual behavior of the pavement structure under an applied load, thus assisting in validating the proposed pavement design.https://www.mdpi.com/1424-8220/22/12/4581fiber Bragg grating (FBG)fiber optical sensors (FOS)structural health monitoring (SHM)strain measurements |
| spellingShingle | Janis Braunfelds Ugis Senkans Peteris Skels Rims Janeliukstis Jurgis Porins Sandis Spolitis Vjaceslavs Bobrovs Road Pavement Structural Health Monitoring by Embedded Fiber-Bragg-Grating-Based Optical Sensors Sensors fiber Bragg grating (FBG) fiber optical sensors (FOS) structural health monitoring (SHM) strain measurements |
| title | Road Pavement Structural Health Monitoring by Embedded Fiber-Bragg-Grating-Based Optical Sensors |
| title_full | Road Pavement Structural Health Monitoring by Embedded Fiber-Bragg-Grating-Based Optical Sensors |
| title_fullStr | Road Pavement Structural Health Monitoring by Embedded Fiber-Bragg-Grating-Based Optical Sensors |
| title_full_unstemmed | Road Pavement Structural Health Monitoring by Embedded Fiber-Bragg-Grating-Based Optical Sensors |
| title_short | Road Pavement Structural Health Monitoring by Embedded Fiber-Bragg-Grating-Based Optical Sensors |
| title_sort | road pavement structural health monitoring by embedded fiber bragg grating based optical sensors |
| topic | fiber Bragg grating (FBG) fiber optical sensors (FOS) structural health monitoring (SHM) strain measurements |
| url | https://www.mdpi.com/1424-8220/22/12/4581 |
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