A5086897109- Advanced Fiber Optic Sensors
- Structural Health Monitoring Techniques
- Vibration and Dynamic Analysis
- Photonic and Optical Devices
- Ionosphere and magnetosphere dynamics
- Advanced Sensor and Energy Harvesting Materials
- Semiconductor Lasers and Optical Devices
- Railway Engineering and Dynamics
- Magneto-Optical Properties and Applications
- Polydiacetylene-based materials and applications
- Non-Invasive Vital Sign Monitoring
- Optical Coherence Tomography Applications
University of Mons
2022-2023
There is today ample evidence that fiber Bragg gratings (FBGs) distributed along a railway track can provide robust axle counting and bring numerous assets compared to competing technologies in this practical environment. This work brings two relevant originalities with respect the state-of-the-art solutions. First, study of strain distribution rail cross-section performed determine sensitivity according charge position on rail. Secondly, technology deployed as smart object where sensor head...
Fiber Bragg gratings (FBGs) have already proven their efficiency in axle counting when distributed along a railway track and bring advantages with respect to competing sensors. In this work, two relevant originalities are proposed broaden the state-of-the-art solutions. First, strain distribution rail cross-section is studied identify sensitivity, depending on charge position. Secondly, sensor head, composed of four wavelength-division-multiplexed FBGs single optical fiber, deployed...
This article describes the creation and characterization of a smart elastic fabric strip that incorporates prestrained fiber Bragg grating (FBG) sensors. The is 700-mm long 60-mm wide, standard single-mode optical with four cascaded wavelength-division-multiplexed gratings sewn onto strip. Each FBG sensor affixed to specifically designed 3-D-printed pad in manner, which permits detection both traction compression. Among three configurations, design has been chosen following tensile tests....
This paper reports experimental results obtained on a fiber Bragg gratings (FBG) system able to sense the deformations of vertical axis wind turbine (VAWT) tower. Cost and time optimization is paramount in industry. Therefore, structural health monitoring (SHM) needed prevent machines from failure. In this project, three FBG strain sensors are placed vertically along VAWT tower, each spaced by 1.5 meter. A comparison every sensor revealed that height has no significant influence sensitivity...
This paper reports on the development of a smart elastic textile band containing pre-strained fiber Bragg gratings (FBG) that was specifically designed with ambition to dynamically measure position backbone. To this aim, is 700 mm long and 60 wide. A piece standard single-mode optical fiber, in which four were inscribed, sewn band. Each FBG glued 3D-printed pad way, allowing detection compression addition elongation. Measurements performed sensing resulting sensitivity wavelength shift 12 pm...
This paper presents experimental results of FBG sensors used for SHM a vertical axis wind turbine tower. Thanks to power spectral density computations, three deformation types are detected, each characterized by specific frequency.
We present a polarization-sensitive reflectometry-based technique for distributed magnetic field measurement using single polarization axis analysis in spun fibres. Sub-cm range spatial resolution was achieved with the when tested an MRI scanner.
A vertical axis wind turbine tower was equipped with FBG for SHM. The obtained results explain the deduction of three deformation sources and most sensitive position sensors along height determined.