Fatigue tests of turbine blades were performed, during which cracks in the tested blades were initiated. Frequency response functions were measured during this experiment and changes in modal parameters (frequency and damping) due to crack propagation were evaluated.
Fatigue tests of turbine blades were performed, during which cracks in the tested blades were initiated. Frequency response functions were measured during this experiment and changes in modal parameters (frequency and damping) due to crack propagation were evaluated. (en)