Change search
Link to record
Permanent link

Direct link
Franciscangelis, CarolinaORCID iD iconorcid.org/0000-0002-0137-4245
Publications (6 of 6) Show all publications
Claesson, Å., Franciscangelis, C., Pereira, J., Weldehawariat, T. & Hey Tow, K. (2022). FBG Applications in 25um Diameter Fibers. In: Optics InfoBase Conference Papers: . Paper presented at Bragg Gratings, Photosensitivity and Poling in Glass Waveguides and Materials, BGPP 2022, 24 July 2022 through 28 July 2022. Optica Publishing Group (formerly OSA)
Open this publication in new window or tab >>FBG Applications in 25um Diameter Fibers
Show others...
2022 (English)In: Optics InfoBase Conference Papers, Optica Publishing Group (formerly OSA) , 2022Conference paper, Published paper (Refereed)
Abstract [en]

Ultrathin 25μm optical fibers with FBG sensors are manufactured and used as vibration sensors in glass-fiber reinforced composites. The use of ultrathin fibers is discussed, and their manufacture is described. © 2022 The Authors.

Place, publisher, year, edition, pages
Optica Publishing Group (formerly OSA), 2022
Keywords
Fiber reinforced plastics, FBG sensor, Glass-fibre reinforced composites, Ultra-thin, Vibration sensors, Fiber Bragg gratings
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-62616 (URN)2-s2.0-85144238430 (Scopus ID)9781557528209 (ISBN)
Conference
Bragg Gratings, Photosensitivity and Poling in Glass Waveguides and Materials, BGPP 2022, 24 July 2022 through 28 July 2022
Available from: 2023-01-24 Created: 2023-01-24 Last updated: 2023-10-31Bibliographically approved
Williams Portal, N., Prieto Rábade, M. & Franciscangelis, C. (2022). Sensor characteristics and implementation for tidal turbine foundation.
Open this publication in new window or tab >>Sensor characteristics and implementation for tidal turbine foundation
2022 (English)Report (Other academic)
Abstract [en]

The purpose of CF2T project is to develop a competitive foundation, immerse it as part of a precommercial project and validate the concept in a real sea environment. The innovative foundation will be designed to decrease construction costs, with modular interfaces to allow an installation in several packages (foundation parts, ballasts, turbine) in order to limit the installation vessel’s crane capacity requirement, which will also reduce installation costs. The different alternatives to reduce the structure construction costs and modularity will be evaluated including the design of a hybrid foundation combining concrete and steel. The new foundation should also have an adaptive interface with the seabed in order to avoid any seabed preparation. In addition, the project will develop a monitoring system to have a better understanding of loads applied to the structure for future foundations developments. This monitoring will allow to carry out a survey of the structural health for preventive maintenance which will contribute to improve reliability of the foundation. This report is the first deliverable in WP6 (Foundation Monitoring), namely D6.1 Sensor characteristics and implementation report. RISE led the work in collaboration with SAITEC and ALKIT. This report proposes sensor characteristics and implementation for the foundation of tidal turbine designed within the project. A literature review is firstly included on Structural Health Monitoring (SHM), relevant SHM techniques and SHM’s applicability to both concrete and offshore structures. Fibre optics, specifically Fibre Bragg Grating (FBG), were identified to be the most suitable solution for SHM of the concrete foundation. Critical measurement areas and performance indicators for the concrete foundation were identified and a detailed measurement scheme was proposed. Implementation on the laboratory scale was studied for both material and component levels, i.e., steel reinforcement and concrete surface. It was observed that the fibre optics were able to measure the distribution of strains coherently and accurately on steel reinforcement subjected to tensile loading, all while proving to be durable against high levels of corrosion. Detection of strain in the concrete surface which could indicate tilting and/or onset of cracking was also possible with the proposed fibre optic system.

Publisher
p. 50
Series
RISE Rapport ; 2022:03
Keywords
marine structure, tidal turbine, Structural Health Monitoring (SHM), fibre optics
National Category
Civil Engineering
Identifiers
urn:nbn:se:ri:diva-62520 (URN)978-91-89561-18-2 (ISBN)
Available from: 2023-01-13 Created: 2023-01-13 Last updated: 2023-05-26
Williams Portal, N., Prieto Rábade, M. & Franciscangelis, C. (2022). Sensors implemented and calibrated in proof-of-concept.
Open this publication in new window or tab >>Sensors implemented and calibrated in proof-of-concept
2022 (English)Report (Other academic)
Abstract [en]

The purpose of CF2T project is to develop a competitive foundation, immerse it as part of a precommercial project and validate the concept in a real sea environment. The innovative foundation will be designed to decrease construction costs, with modular interfaces to allow an installation in several packages (foundation parts, ballasts, turbine) in order to limit the installation vessel’s crane capacity requirement, which will also reduce installation costs. The different alternatives to reduce the structure construction costs and modularity will be evaluated including the design of a hybrid foundation combining concrete and steel. The new foundation should also have an adaptive interface with the seabed in order to avoid any seabed preparation. In addition, the project will develop a monitoring system to have a better understanding of loads applied to the structure for future foundations developments. This monitoring will allow to carry out a survey of the structural health for preventive maintenance which will contribute to improve reliability of the foundation. This report is the second deliverable in WP6 (Foundation Monitoring), namely D6.2 Sensor implemented and calibrated in proof-of-concept. RISE led the work with collaborative efforts from ALKIT. The proof-of-concept was proposed by RISE to enable the implementation of the proposed and developed monitoring system based on fibre optics in a representative reinforced concrete test object. This report covers the implementation in the proof-of-concept, the execution of experiment with mechanical loading on the test object, as well as the calibration of the given sensors and verification using secondary measuring techniques. The results show a complete characterization of the structure strain response along several loading cycles and the compatibility between the fibre optics-based sensors and the strain gauges validating the optical solution for structural monitoring. The system showed its capability for crack detection and also showed a good consistency of the measurements under repeated cycles. Lastly, a description of requirements and details for taking this proof-of-concept to the next phase of offshore monitoring of the concrete foundation is provided.

Publisher
p. 54
Series
RISE Rapport ; 2022:06
Keywords
marine structure, tidal turbine, Structural health monitoring (SHM), fibre optics, concrete foundation
National Category
Civil Engineering
Identifiers
urn:nbn:se:ri:diva-62521 (URN)978-91-89561-21-2 (ISBN)
Available from: 2023-01-13 Created: 2023-01-13 Last updated: 2023-05-26Bibliographically approved
Franciscangelis, C., Lindblom, M., Margulis, W., Hey Tow, K., Sjölander, O., Kahlman, L. & Bankeström, O. (2019). On-field validation of real-Time phase-OTDR for roller bearing monitoring. In: Proceedings of SPIE - The International Society for Optical Engineering: . Paper presented at 7th European Workshop on Optical Fibre Sensors, EWOFS 2019, 1 October 2019 through 4 October 2019. SPIE
Open this publication in new window or tab >>On-field validation of real-Time phase-OTDR for roller bearing monitoring
Show others...
2019 (English)In: Proceedings of SPIE - The International Society for Optical Engineering, SPIE , 2019Conference paper, Published paper (Refereed)
Abstract [en]

This work presents an on-field validation of an in-house built real-Time phase-OTDR for monitoring the status of roller bearings. The acoustic sensor prototype was designed and assembled at RISE and evaluated on a 1 m diameter bearing at SKF AB facilities in Göteborg, Sweden. A 0.24 numerical aperture single-mode optical fiber was installed in the bearing lubrication groove, which is 50 mm large and 5 mm deep. Tests were performed to verify the response of the phaseOTDR to acoustic emissions in the bearing such as hammer hits and running the rollers at different loads. The fiber optic sensor results agree with the measurements performed by a standard industrial high sensitivity electronic accelerometer used for comparison. Moreover, as opposed to the reference electronic sensor, the phase-OTDR proved to be insensitive to electrical disturbances present on the environment.

Place, publisher, year, edition, pages
SPIE, 2019
Keywords
Acoustic sensing, Phase-OTDR, Roller bearing, Vibration, Acoustic emission testing, Fiber optic sensors, Optical fibers, Rollers (machine components), Bearing monitoring, Electrical disturbances, Electronic sensors, Numerical aperture, Single-mode optical fiber, Roller bearings
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-40628 (URN)10.1117/12.2541266 (DOI)2-s2.0-85073345258 (Scopus ID)9781510631236 (ISBN)
Conference
7th European Workshop on Optical Fibre Sensors, EWOFS 2019, 1 October 2019 through 4 October 2019
Available from: 2019-11-25 Created: 2019-11-25 Last updated: 2023-10-31Bibliographically approved
Munoz, D. M., Franciscangelis, C., Margulis, W., Fruett, F. & Soderquist, I. (2017). Low latency disturbance detection using distributed optical fiber sensors. In: Proceedings of the 2017 IEEE 14th International Conference on Networking, Sensing and Control, ICNSC 2017: . Paper presented at 14th IEEE International Conference on Networking, Sensing and Control, ICNSC 2017, 16 May 2017 through 18 May 2017 (pp. 372-377).
Open this publication in new window or tab >>Low latency disturbance detection using distributed optical fiber sensors
Show others...
2017 (English)In: Proceedings of the 2017 IEEE 14th International Conference on Networking, Sensing and Control, ICNSC 2017, 2017, p. 372-377Conference paper, Published paper (Refereed)
Abstract [en]

Distributed optical fiber sensors based on phase-sensitive optical time domain reflectometry (Φ-OTDR) are feasible options to detect perturbations in kilometric security perimeters or mechanical structures. This technique takes advantage of electromagnetic interference immunity, small dimensions, lightweight, flexibility, and capability. Moreover, this technique can be combined with dedicated hardware architectures, in order to improve its performance and reliability. This work proposes the use of parallel hardware architectures to implement real-time detecting and locating perturbations in a Φ-OTDR distributed optical fiber vibration sensor. Hardware architectures of the iterative moving average filter and the Sobel filter were mapped on field programmable gate arrays, exploring the intrinsic parallelism in order to achieve real-time requirements. A performance comparison between the proposed solutions was addressed in terms of hardware cost, latency and power consumption.

Keywords
Distributed sensors, FPGAs, Hardware architectures, Optical fiber vibration sensors, Optical time-domain reflectometer (OTDR), Electromagnetic pulse, Fiber optic sensors, Fibers, Field programmable gate arrays (FPGA), Hardware, Iterative methods, Optical fibers, Reflectometers, Ventilation exhausts, Distributed optical fiber, Distributed optical fiber sensors, Distributed sensor, Hardware architecture, Optical time domain reflectometer, Optical time domain reflectometry, Performance and reliabilities, Vibration sensors, Time domain analysis
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-32499 (URN)10.1109/ICNSC.2017.8000121 (DOI)2-s2.0-85028506370 (Scopus ID)9781509044283 (ISBN)
Conference
14th IEEE International Conference on Networking, Sensing and Control, ICNSC 2017, 16 May 2017 through 18 May 2017
Available from: 2017-11-09 Created: 2017-11-09 Last updated: 2019-06-27Bibliographically approved
Franciscangelis, C., Fruett, F., Margulis, W., Kjellberg, L. & Floridia, C. (2017). Real-time multiple machines sound listening using a phase-OTDR based distributed microphone. In: SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, IMOC 2017: . Paper presented at 17th SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, IMOC 2017, 27 August 2017 through 30 August 2017.
Open this publication in new window or tab >>Real-time multiple machines sound listening using a phase-OTDR based distributed microphone
Show others...
2017 (English)In: SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, IMOC 2017, 2017Conference paper, Published paper (Refereed)
Abstract [en]

We propose and experimentally demonstrate a spatially tunable phase-OTDR based distributed microphone for listening to the sound of multiple machines. The distributed acoustic sensing capability, allied with the real-time spatial tuning, enables listening to a drill and to a cooling water system pump placed in two different sections along a single optical fiber, one at a time. The recorded acoustic waveform profile of both machines agreed with their operating cycles. Moreover, the sounds generated by both engines are successfully distinguished with the proposed method even when both machines are operating simultaneously..

Keywords
Distributed acoustic sensing, Optical fiber microphone, Phase-OTDR, Rayleigh scattering, Acoustics, Cooling water, Microphones, Optical fibers, Water cooling systems, Acoustic sensing, Acoustic waveform, Cooling water systems, Distributed microphones, Fiber microphones, Multiple machine, Single optical fibers, Optoelectronic devices
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-35322 (URN)10.1109/IMOC.2017.8121039 (DOI)2-s2.0-85043711699 (Scopus ID)9781509062416 (ISBN)
Conference
17th SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, IMOC 2017, 27 August 2017 through 30 August 2017
Available from: 2018-10-23 Created: 2018-10-23 Last updated: 2019-06-27Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-0137-4245

Search in DiVA

Show all publications