ABSTRACT
Rotating wings seek to create an artificial airflow to generate power or thrust. Rotating structures are the important components of transport and energy industries. As such structures age, they are prone to health problems. Health monitoring of rotating structures has therefore received increasing attention in recent years [1–4]. Typically, existing rotor diagnostics rely on track and balance methods and do not isolate the type of damage [5–8]. Most research on rotor health monitoring has addressed metal blades [9–12]. However, the damage mechanics of a composite rotor 370are different [13–16]. Most wind turbine and helicopter rotor blades are made from composites, and predicting their damage state and life is important.
