I have a test sample (Piezo Diaphragm) which I am actuating with a voltage supplied to the sample to assess the impulse response.
When this voltage is supplied to the sample a deformation per unit voltage occurs and the diaphragm undergoes a deflection (displacement).
Once the voltage is removed, the diaphragm (sample) undergoes damped oscillations until it returns to its initial condition before the voltage was supplied.
The displacement over time is measured with a laser vibrometer and results in a damped oscillations plot. From this plot I am able to determine system characteristics using the log decrement method such as natural frequency and damping ratio.
My question is whether it is possible to determine system characteristics such as Stiffness (k) or Mass (m) solely using the displacement over time data and the damped oscillation plot?