Page 20 - Vibrations
P. 20
= =
− ∆
2
1
where ∆ is also known as the bandwidth.
You can see in the above figure the values of f and
1
f occur at half height of the spectral profile.
2
In this example
20
= = 3.125
23.2 − 16.8
Calculating the Q factor
Giving a damped signal it’s possible to measure the
Q-factor directly from the waveform.
19
