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iFROG robots at the ORE Catapult facilityiFROG, an amphibious robot capable of working in teams to clean and inspect monopiles above water level and up to 60 metres below (~6 bar), has completed trials at the Offshore Renewable Energy (ORE) Catapult’s National Renewable Energy Centre in Blyth, UK.
 
Initial technology demonstrations, which took place at the ORE Catapult dry and wet docks earlier this autumn, saw iFROG navigate a monopile interior using magnetic adhesion and conduct non-destructive testing (NDT).
 
The robot proved its ability to scale the interiors of monopiles diagonally, not just up and down as wheeled robots have done previously. Its amphibious capabilities were tested too, with the robot moving easily between dry and underwater sections of the monopile. During the final trials, two robots demonstrated how they can work together in a team above and below the waterline. The first robot performed corrosion mapping and water-jet cleaning of the monopile. The second robot inspected weld lines to assess integrity and flag potential defects.
 
The multi-robot solution was developed under a three-year project that was funded by Innovate UK and brought together iFROG developer InnoTecUK, ORE Catapult, TWI and Brunel University London.
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