Master Assignment
In this assignment we will look at a cantilever beam which is oscillated for many hundreds of cycles at always a constant displacement amplitude and excitation frequency. Hence, the dynamic system is excited with a force which makes the tip of the beam oscillating always at the same frequency and amplitude. The relative phase between the input force and the output response shows a linear decrement which suddenly changes slope. That sudden change in slope is caused by a damage appearing inside our oscillating beam. This damage becomes bigger over the number of cycles. In this assignment the data driven techniques will be investigated in order to analyze:
1. Why the energy of vibrations breaks through high order harmonics when a damage occurs?
2. How is the damage initiation and early growth affecting the super harmonic amplitudes over number of cycles?
3. Can data mining find a physical meaning?
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