| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Laffont, Guillaume
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2024Ceramic-coated type III femtosecond Fiber Bragg Grating for high temperature environments
- 2023Ultrasonic Guided Waves Measurements using Bragg Gratings in Optical Fibers under Varying Environmental Conditionscitations
- 2023Ultrasonic guided waves measurements using Fiber Bragg Gratings on optical fibers under varying environmental conditionscitations
- 2022Selective Laser Melting In Situ Temperature Monitoring Using Femtosecond Point-by-Point Fiber Bragg Gratingscitations
- 2022New shapemeter roll technology based on Fiber Bragg Grating technology for on-line flatness monitoring of thin cold rolled metal sheetscitations
- 2019Guided wave imaging of a composite plate using passive acquisitons by Fiber Bragg Gratings on optical fibers
- 2018Passive guided waves measurements using fiber Bragg gratings sensorscitations
- 2017Temperature Resistant Fiber Bragg Gratings for Online Monitoring of Future Sodium cooled Fast Reactors: Paving the Way to SHM Implantation into the Nuclear Industry
- 2015Irradiation campaign in EOLE reactor facility of fibre Bragg grating sensors dedicated to the online temperature measurement in critical reactor facilities (SOMETIME project)
- 2007High speed real-time contact measurements between a smart train pantograph with embedded Fibre Bragg Grating sensors and its Overhead Contact Line
Places of action
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conferencepaper
Temperature Resistant Fiber Bragg Gratings for Online Monitoring of Future Sodium cooled Fast Reactors: Paving the Way to SHM Implantation into the Nuclear Industry
Abstract
International audience ; Advanced manufacturing techniques using thermal engineering (regeneration process) and ultrafast laser micromachining of silica optical fibers have tackled the challenges of making high temperature resistant Fiber Bragg Gratings (FBGs) sensors. Arrays of temperature and strain wavelength-multiplexed FBGs sensors for the online monitoring of future Nuclear Reactors (Generation IV) are becoming a reality. Both regenerated and femtosecond FBGs have been intensively tested up to 950 °C for temperature mapping and recently tested also up to 400 °C for strain measurements on metallic devices. These sensors are expected to perform continuous monitoring of sodium-cooled nuclear reactors and to improve their safety and pave the way to Structural Health Monitoring (SHM) implantation into the nuclear industry. We present the manufacturing of i) regenerated FBGs using an all-optical process and of ii) femtosecond laser-written point-by-point femtosecond (fs PbP) FBGs directly into free-standing singlemode optical fibers. The presented techniques may not only speed up the manufacturing process but also improve the mechanical reliability of the FBGs. The temperature stability of both kinds of FBGs is assessed through long term ageing up to 950 °C highlighting their temperature resistance. Both are appropriate candidates for online thermometry even in severe environments such as those encountered in future Sodium-cooled Fast Reactor. Strain sensing is under development using fs PbP FBGs to operate beyond 400 °C using a traction machine and standard metallic specimens.