I am trying to determine the energy of elastic stress waves generated in a solid by an impact. I have a time domain waveform from a piezoelectric transducer that was placed next to the impact site, as well as the voltage/displacement calibration of the transducer.
My first idea was to integrate over the amplitude squared, but that would only give me a signal energy instead of the actual wave energy. I am not sure what impedance factor to use.
Some research has also led me towards using stress and strain tensors, but I don't understand how exactly to apply that method.
Any advice would be appreciated. Thanks!
