| 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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Berghmans, Francis
Vrije Universiteit Brussel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (45/45 displayed)
- 2023Microstructured Optical Fiber Made From Biodegradable and Biocompatible Poly(D,L-Lactic Acid) (PDLLA)citations
- 2023Fatigue weld crack detection using distributed fiber optic strain sensingcitations
- 2022Simultaneous modal phase and group velocity matching in microstructured optical fibers for second harmonic generation with ultrashort pulsescitations
- 2021Monitoring of Torque Induced Strain in Composite Shafts with Embedded and Surface-Mounted Optical Fiber Bragg Gratingscitations
- 2020Selective liquid filling of photonic crystal fibers using two-photon polymerization lithography without post-exposure developmentcitations
- 2020On the Characterization of Novel Step-Index Biocompatible and Biodegradable poly(D,L-lactic acid) Based Optical Fibercitations
- 2019Amorphous random copolymers of lacOCA and manOCA for the design of biodegradable polyesters with tuneable propertiescitations
- 2019Amorphous random copolymers of lacOCA and manOCA for the design of biodegradable polyesters with tuneable propertiescitations
- 2019Poly(D, L-Lactic Acid) (PDLLA) Biodegradable and Biocompatible Polymer Optical Fibercitations
- 2017Dynamic 3D strain measurements with embedded micro-structured optical fiber Bragg grating sensors during impact on a CFRP couponcitations
- 2017Fibre Bragg gratings in embedded microstructured optical fibres allow distinguishing between symmetric and anti-symmetric lamb waves in carbon fibre reinforced compositescitations
- 2017Development of a mechanical strain amplifying transducer with Bragg grating sensor for low-amplitude strain sensingcitations
- 2016Vibration Monitoring Using Fiber Optic Sensors in a Lead-Bismuth Eutectic Cooled Nuclear Fuel Assemblycitations
- 2016Determination of the radial profile of the photoelastic coefficient of polymer optical fibers
- 2015Microstructured optical fiber bragg grating as an internal three-dimensional strain sensor for composite laminatescitations
- 2015A Micro-Computed Tomography Technique to Study the Quality of Fibre Optics Embedded in Composite Materialscitations
- 2015Algorithms for determining the radial profile of the photoelastic coefficient in glass and polymer optical fibrescitations
- 2015Internal strain Monitoring of composite materials with microstructured optical fiber Bragg grating sensors
- 2014Challenges in the fabrication of fibre Bragg gratings in silica and polymer
- 2014Microstructured optical fiber Bragg grating-based strain and temperature sensing in the concrete buffer of the Belgian supercontainer conceptcitations
- 2014Microstructured Optical Fiber Bragg Grating Sensors for Structural Health Monitoring Applications
- 2014On a possible method to measure the radial profile of the photoelastic constant in step-index optical fiber
- 2014Internal strain monitoring in composite materials with embedded photonic crystal fiber Bragg gratings
- 2014Plastic optical fibers for sensing applications
- 2013Opportunities for Structural Health Monitoring of Composite Material Structures with Novel Microstructured Optical Fiber Sensors
- 2013Embedded fiber Bragg gratings in photonic crystal fiber for cure cycle monitoring of carbon fiber-reinforce polymer materials
- 2013Influence of measurement noise on the determination of the radial profile of the photoelastic coefficient in step-index optical fibres
- 2013Opportunities for Structural health monitoring of composite material structures with novel microstructured optical fiber sensors
- 2012Supercontinuum generation in all-solid photonic crystal fiber with low index core
- 2012Mechanical reliability of microstructured optical fibers – a comparative study of tensile and bending strength
- 2012Towards Flexible Photonic Sensing Skins with Optical Fiber Sensors
- 2011Photonic crystal fiber Bragg grating based sensors: opportunities for applications in healthcarecitations
- 2011Microstructured optical fiber sensors embedded in a laminate composite for smart material applications
- 2011Photonic crystal fiber Bragg grating based sensors-opportunities for applications in healthcare
- 2011Photonic crystal fiber Bragg grating based sensorscitations
- 2011Large-mode-area photonic crystal fiber with double lattice constant structure and low bending loss
- 2010Induced optical absorption of silicate glasses due to gamma irradiation at high temperatures
- 2009Response of Fiber Bragg Gratings in Microstructured and Bow Tie Fibers Embedded in Laminated Composite
- 2009Ultra flat supercontinuum generation in silicate dual core microstructured fiber
- 2009Fiber Bragg Gratings in Microstructured Optical Fibers for Stress Monitoring
- 2009Benchmarking the response of Bragg gratings written in microstructured and bow tie fiber embedded in composites
- 2009Transversal load sensing with fiber Bragg gratings in microstructured optical fibers
- 2009Fiber Bragg gratings in microstructured optical fibers for stress monitoring
- 2008Investigations of bending loss oscillations in large mode area photonic crystal fibers
- 2008Soft glass photonic crystal fibers for supercontinuum generation
Places of action
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article
Vibration Monitoring Using Fiber Optic Sensors in a Lead-Bismuth Eutectic Cooled Nuclear Fuel Assembly
Abstract
Excessive fuel assembly vibrations in nuclear reactor cores should be avoided in order not to compromise the lifetime of the assembly and in order to prevent the occurrence of safety hazards. This issue is particularly relevant to new reactor designs that use liquid metal coolants, such as, for example, a molten lead-bismuth eutectic. The flow of molten heavy metal around and through the fuel assembly may cause the latter to vibrate and hence suffer degradation as a result of, for example, fretting wear or mechanical fatigue. In this paper, we demonstrate the use of optical fiber sensors to measure the fuel assembly vibration in a lead-bismuth eutectic cooled installation which can be used as input to assess vibration-related safety hazards. We show that the vibration characteristics of the fuel pins in the fuel assembly can be experimentally determined with minimal intrusiveness and with high precision owing to the small dimensions and properties of the sensors. In particular, we were able to record local strain level differences of about 0.2 mu epsilon allowing us to reliably estimate the vibration amplitudes and modal parameters of the fuel assembly based on optical fiber sensor readings during different stages of the operation of the facility, including the onset of the coolant circulation and steady-state operation.