Resonant vibrations of aircraft engine blades cause blade fatigue problems in engines, which can lead to
thicker and aerodynamically lower performing blade designs, increasing engine weight, fuel burn, and
maintenance costs. In order to mitigate undesirable blade vibration levels, active piezoelectric vibration
control has been investigated, potentially enabling thinner blade designs for higher performing blades
and minimizing blade fatigue problems. While the piezoelectric damping idea has been investigated
by other researchers over the years, very little study has been done including rotational effects. The present
study attempts to fill this void. The particular objectives of this study were to: (a) develop a methodology
to analyze a multiphysics piezoelectric finite element composite blade model for harmonic forced
vibration response analysis coupled with a tuned RLC circuit for rotating engine blade conditions, (b) validate
a numerical model with experimental test data, and (c) achieve a cost-effective numerical modeling
capability which enables simulation of rotating blades within the NASA GRC Dynamic Spin Rig Facility. A
numerical and experimental study for rotating piezoelectric composite subscale fan blades was performed.
It was proved that the proposed numerical method is feasible and effective when applied to
the rotating blade base excitation model. The experimental test and multiphysics finite element modeling
technique described in this paper show that piezoelectric vibration damping can significantly reduce
vibrations of aircraft engine composite fan blades.