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Ferdinando Scherillo received the Aeronautical Engineering master degree and PhD graduation from University of Naples Federico II. He worked as assistant professor in the flight mechanics area and he was involved in several projects regarding blade design for small wind turbines as well as blade design for tidal turbines. During this period, he was supervisor for bachelor and master theses and author of several scientific papers. From 2014 to 2018 he worked as an expert engineer for a consulting company in the field of wind turbine design. Since 2019 he has worked for Cartflow as senior engineer. His main topic is blade loads determination and rotor aerodynamic design.
The Brillouin scattering is a technique that can be applied in order to measure the strains on the blade surface. In our opinion the technique could be used for strain measurements in real scale tests as well as tor strain monitoring during the blade's operational life. The feasibility of the technique can be proven by means of several real scale static tests and then, in a future step, applied to on field measurements.
As It has been said in the previous answer, the Brillouin scattering technique can be used to measure the strains on the blade surface. Differently from other classical techniques (strain gauges, optical strain gauges etc.,) the Brillouin technique allows to measure the strains in a "continuous way" along an optical fiber that is applied on the blade. Regarding the blade monitoring aspects, the optical fiber can be easily embedded inside the blade lamination during the manufacturing phase.
If some critical points related with the instrumentation costs will be overcome in the next 5 years the Brillouin scattering techique can become one of the leading thecnology for the blade strain monitoring. Other technologies that, in the next years, can be competitive with the Brillouin technique are the techniques related with the Digital Image Correlation.
Thank you Mr. Scherillo for providing your insight!
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