Index
A
acceleration 12, 15, 16, 47, 48
Acceleration 68
amplitude 10, 12, 13, 14, 16, 28, 34, 36, 37, 39, 42, 47
Amplitude demodulation 83
Amplitude modulation 83, 84, 85
Angular Misalignment 109
Average 13, 15
B
Bearing Mobility 102
bearing tones 71, 64, 114, 115
Beats 36, 37
Belt drives 64, 128
blade rate 125
bump test 32
C
carrier 34, 35
Cavitation 125
Centrifugal Compressors 133
Centrifugal Fans 133
Commercial Standards 148
Compressor surge 133
continuous spectrum 32
Couplings 110
crest factor 69, 83
Crest factor 69
critical 22, 69
D
D.C. Motors 124
dB 42, 47, 71
degrees of freedom 9
Deterministic 28, 30, 32
differentiation 16
displacement 10, 14, 15, 16, 31, 45
Displacement 62, 68, 134
Dynamic Imbalance 106
E
Eccentric Sheaves 129
excitation force 9, 29
F
fans 108, 133
fault 1–3, 8, 26, 39
FFT 29, 53
FFT analyzer 62
First Order 64
Forcing Frequencies 71, 61
frequency 9, 10, 16, 19, 24, 26, 28, 29, 30, 32, 34, 35, 36, 45, 46, 47, 48
Frequency Analysis 27, 29, 32
frequency domain 24, 25, 29
FTF 115
Fundamental Train Frequency 115
G
G 15, 16
Gear eccentricity 132
Gear pumps 126
ghost 63
H
harmonic 15, 28, 30
harmonic series 28
harmonics 64, 68, 111, 112, 114, 115, 116, 122, 127, 128, 129, 134
I
ICP 48
imbalance 61, 71, 104, 106, 107, 108, 117, 122, 127, 128, 129
Induction Motors 67
Integration 16
ISO Standards 147
J
jerk 15
journal bearing 111
K
Kurtosis 83
L
linear 19, 29, 34, 36, 39, 40, 41, 43, 47
Log 39, 43
logarithm 43
Loose Windings 122
looseness 68, 116, 128
M
Magnetostriction 120
mils 62, 147
Mil-Std 167-2 146
misalignment 109, 110, 113, 128, 129
Modal Analysis 12
Modulation 34, 35, 36
N
NAVSEA Technical Specification 148
non-synchronous components 64
O
Oil Whirl 111
Orbit plots 67
oscillation 9, 10
overhung 107, 108, 110, 128
P
Parallel Misalignment 109
Peak Amplitude 13
Peak-to-Peak 13, 16
pendulum 9
period 10, 13, 28, 30, 50
phase 10, 13, 15, 36, 37, 47
Pumps 107, 110, 125, 134, 147
Q
quasi-periodic 28
R
Random Noise 70, 68
Reciprocating Machines 69, 134
resonance 21
RMS 13, 26
Rolling Element Bearings 68, 113
Root Mean Square 13
rotor 71, 107, 108, 120, 121, 122, 125
rotor bar 121, 122
rotor bow 122
S
screw type pump 127
Sensor Mounting Pads 65
Sheave Misalignment 129
sidebands 34, 35, 36, 115
signals 16, 19, 27, 28, 30, 32, 34, 35, 36, 37, 45
Simple Harmonic Motion 9
sine wave 10, 13, 15, 29, 36
sinusoid 19
slip 120, 122
slot pass frequency 121
spectrum 24, 25, 27, 29, 31, 32, 34, 35, 36, 40, 48, 62, 69, 71, 61, 63, 68, 125, 126, 132
Spectrum Comparison 68
Spectrum Mask 70
stationary 27, 28, 46
stator 62, 120, 121, 122
Synchronous Averaging 71, 73, 75, 78
Synchronous Motors 118
T
tachometer 14
ten-point divider 61, 64
time domain 24, 26, 29
tooth-mesh 71
transducer 62, 69
trending 39, 67, 69, 115
trigger 14
Truncation 68
Turbines 22, 108, 125, 134
V
vane pass 71, 64, 133, 134
VdB 42, 44, 107, 114, 134, 147
velocity 15, 16
Velocity 44, 62, 147
vibration 9, 10, 13, 16, 17, 26, 28, 29, 31, 34, 35, 40, 45, 46, 47
Vibration Severity Chart 148
vibration spectrum 62, 69, 71, 127
VTAG 61
W
wave form 11, 13, 15, 19, 26, 29, 31, 32, 35, 36, 43, 48, 68
waveform 65
whole body motion 9
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