NDT for blades
Exposing CFRP to electric currents from lightning discharges can cause significant damages to the primary structure of blades. Beside the risk of suboptimal repair result due to narrow window of polymer process parameters a coupled thermal-electric-mechanical influence of Joule heating can appear between the two hot spots of the lightning current inside the pultruded Carbon girder and is potentially suitable to reduce service life of rotor system.
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