Vibration Amplitude Versus Frequency; F I Gur E 19 Vibration Amplitude Versus Frequency Chart - GE H301 Series Operating Manual

Vibration Amplitude versus Frequency

"Figure 19" shows how vibration amplitude decreases as frequency increases.
• The diagonal lines are in velocity measured in inches per second.
• The X axis (frequency) measures in cycles per minute = RPM.
• The Y axis (displacement amplitude) measures in Mils peak to peak.
Amplitude (Mils Peak-to-Peak)
100
Guidelines reference measurement at the
outboard cylinder end.
10
1
100
F i g u Re 1 9
92 | Chapter 7: Vibration
1.0 IPS
0.8 IPS
0.5 IPS
Satisfactory
Marginal
Unsatisfactory
Vibration amplitude versus frequency chart
1,000
Frequency (CPM)
10,000