Hydroquest has developed a demonstrator of vertical axis tidal turbine with a power of 1MW which was immersed on the EDF site of Paimpol-Bréhat.
As part of its qualification, Vibratec was commissioned to perform the monitoring of the turbine. Given the extreme conditions at a depth of about 40 m and strong sea currents, the optical fiber technology based on Bragg grating sensors has been favored for its robustness.
SCAIME has proposed the Bragg grating sensor, MDX-400T-X, in its rugged IP66 stainless steel housing. All FBG sensors are measured in parallel at 100Hz with high accuracy. The strain gauges are glued with structural epoxy adhesive and protected by marine mastic.
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