Push and pull – testing wind turbine blades

The world wind turbine market is set for continued growth, with the Global Wind Energy Council forecasting up to 1 TW installed by 2020 in its most optimistic scenario. As wind turbines go offshore and into more extreme environments, the demands put on their blades increase. To ensure the blades meet design requirements, they are tested – both internally and by full-scale testing facilities. Freelance journalist Kari Williamson sees how the testing is done and why.