The National Renewable Energy Laboratory manufactured, instrumented, and deployed thermoplastic composite blades a data acquisition system (NDAQ) on one of Verdant Power’s Gen5d 5 m diameter tidal turbines in New York’s East River. had internal strain gages, the NDAQ was stand-alone for monitoring recording angular position blades. turbine with operated produced power successfully 3 months, con...

It is commonly accepted that multi-scale structures are subject to spatially variable seismic motions. This spatial variability of motions described by different intensities at locations due the coherency loss effect, wave passage effect and local site conditions. For structures, estimation excitations must consider these factors. Often, influence motion on dynamic response performed neglecting...