Sevag H. Arzoumanian
Douglas P. Koehn
David C. Swanson
Appl. Res. Lab., Penn State Univ., P. O. Box 30, State College, PA 16804
The acceleration to force transfer functions across a shaker-excited thin band under tension with a deep notch cut through its center is examined up to the point of fatigue-induced failure. An analytical model is developed to track the changes in modal properties evident in the experimental results as a function of band parameters. The progression of the structure toward failure is documented by plots of rotational stiffness and crack length as a function of fatigue time.