Monitoring of multi-material structures for offshore applications with fiber optic sensors

T. Grandal; D. Pérez; S. Dasilva; R. De la Mano; S. Fraga; L. Mera; E. Rodriguez

doi:10.1117/12.2541381

28 August 2019 Monitoring of multi-material structures for offshore applications with fiber optic sensors

T. Grandal, D. Pérez, S. Dasilva, R. De la Mano, S. Fraga, L. Mera, E. Rodriguez

Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 111991P (2019) https://doi.org/10.1117/12.2541381
Event: Seventh European Workshop on Optical Fibre Sensors, 2019, Limassol, Cyprus

Abstract

The development of renewable energies is a fundamental need to cover the ambitious energy targets demanded by industry and the European Union in the coming years. Wind energy is one of the most promising sources of renewable energy today. But, in the case of offshore wind energy, it has certain limitations due to its relative youth and associated costs, especially in the maintenance, operation and repair operations. Within the project, that includes this work, has been developed a new multi-material component with high structural requirements for the offshore wind sector. A combination of steel and fiberglass (GF) composite material, manufactured by filament winding, with a protection paint from to biofouling and corrosion, will be developed and validated in a real conditions test in the experimental zone of INEGA (A Coruña, Spain), by a demonstrator to scale 1:5. For real-time monitoring of the multi-material structure, a monitoring system based on fiber optics sensors type Bragg Grating (FBG) has been developed and integrated in this multi-material structure. This monitoring system includes sensors of corrosion, temperature and strain. This paper shows the development and characterization of these sensors at the laboratory level against mechanical, thermal tests and a durability study in a marine environment. In addition, it describes the integration of the monitoring system in the demonstrator and its response during the validation phase.

Citation Download Citation

T. Grandal, D. Pérez, S. Dasilva, R. De la Mano, S. Fraga, L. Mera, and E. Rodriguez "Monitoring of multi-material structures for offshore applications with fiber optic sensors", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111991P (28 August 2019); https://doi.org/10.1117/12.2541381

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KEYWORDS

Sensors

Fiber Bragg gratings

Corrosion

Fiber optics sensors

Manufacturing

Wind energy

Composites

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