Damping Test of Concrete & Steel Tube

[redfedoradog]

Very interesting, I've been doing similar tests on my own build.

Have you tried measuring the loss factor (https://my.mech.utah.edu/~bamberg/re...e%20Design.pdf)? It's the energy dissipated (as a ratio of initial energy) over a number of cycles. It's used in measuring damping of larger/more complex systems because bolts and bearings are supposed to contribute significant amounts of damping.

I attached a phone IMU to my frame, hit it with a mallet and recorded the acceleration. Not sure if I did it right, I got a value of 0.08 for the assembled frame versus 0.0005 for the individual beams.