Crack Detection Using Embedded Fiber-Optic Sensors in Reinforced Concrete Beams
| Autor: | Alessandro Cardoni, Daniele Inaudi, Farhad Ansari, Marco Domaneschi, Ivan Cottone, Gian Paolo Cimellaro |
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| Rok vydání: | 2019 |
| Předmět: |
Optical fiber
business.industry Computer science 020101 civil engineering 02 engineering and technology Structural engineering Reinforced concrete 01 natural sciences 0201 civil engineering law.invention Cracking Fiber optic sensor law 0103 physical sciences Ultimate tensile strength Limit state design Deformation (engineering) business 010301 acoustics Beam (structure) |
| Zdroj: | Scopus-Elsevier |
| DOI: | 10.12783/shm2019/32146 |
| Popis: | Reinforced concrete structural components such as beams are subject during their service life to different loading conditions that may affect their durability and efficiency. This can reduce the safety level of the structure over time until it degrades completely and reaches its ultimate limit state. In particular, cracking conditions due to tensile conditions can be developed leading to the exposure of the steel reinforcements to the aggression of external agents, such as chlorides. Being able to monitor the development and the evolution of cracking is crucial and this research is aimed at this purpose. In particular, laboratory tests have been performed on reinforced concrete beams equipped with distributed fiber optics sensors to monitor the state of cracking. This technology has been selected because its inherent accuracy and low noise. Furthermore, since technology relies of optical signals, the sensors are not affected by electrical and magnetic noise. They are also resistant to high temperatures and chemically reactive environments. The main objectives of the presented first part of this research are focused on the deformation and temperature assessment after concrete pouring, crack detection, localization and opening quantification. |
| Databáze: | OpenAIRE |
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