Vibrations

Good day all.
I read a post and it triggered a thought. Thus a question.

How do you know if you motors harmonic balancer is compromised?

Many parts can cause a "vbration" at higher than normal engine speeds.

Fan....
Water pump..
Power steering pump, a/c...altenater,
Pulleys and the such... So what about it?
Author: Gorts 5th