A vibration test is performed on a structure, in which both the magnification factor MF and the phase angle ϕ are recorded as a function of excitation frequency ω0. After the test, it is discovered that, for some unfortunate reason, the recording of the magnification factor data is corrupted so that only the phase angle data is available for analysis. Is it possible to determine the resonant frequency from the available data? What can be inferred about the amount of damping in the system from the phase data?
Note:Concept problems are about explanations, not computations.
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