SYSTEM, TESTING ASSEMBLY AND METHOD FOR FATIGUE TESTING A WIND TURBINE BLADE

摘要

The invention is directed at a system for fatigue testing a wind turbine blade (10) comprising: a mounting (20) for retaining a root end (11) of the wind turbine blade (10), at least one actuator assembly (30) for attachment to the wind turbine blade (10), the at least one actuator assembly (30) comprising at least one actuator (31) for exciting the wind turbine blade (10) in flapwise directions (F) and/or edgewise directions (E), and at least one measuring device (40) for measuring of a stress, a strain and/or a deflection of the wind turbine blade (10). The system further comprises at least one tuned liquid damper (50) for attachment to the wind turbine blade (10), the tuned liquid damper (50) comprising a container (51) and a liquid (52) contained therein.