blade stiffness degradation

Degraded Blade Stiffness Impacts Floating Wind Turbine Dynamics

A 30% reduction in blade stiffness can raise mean blade-tip deformation by roughly a third, yet the more revealing story is asymmetry. When only one blade degrades, platform sway, roll, and yaw near the 1P frequency amplify up to eightfold over baseline, even as overall time-domain statistics barely move. Symmetric degradation mostly bends blades; mismatch steers lateral dynamics. That distinction matters for monitoring, where global metrics alone would miss the warning hidden in the rotational-frequency band.