Ben's vibration testing on just housing and shaft

Ben has been doing some pretty good work on the vibration response to hammer excitation. Here are some images:

Original time domain signals




Cropped time domain signals




Power spectrum for each sensor



As we are only interested in torque, Ben tried to get a "torque" signal by: (S1+S3-S2-S4)/4.

Average cropped time domain signal



Average power spectrum