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1 4. (Vibration Condition Monitoring) (,, ) 5. (transducer):,, (baseline) 9. (trending) PUKYONG NATIONAL UNIV. -1- Intelligent Mechanics Lab.
2 (remedial action) PUKYONG NATIONAL UNIV. -2- Intelligent Mechanics Lab.
3 ,, (flow chart),, (rpm), (,, ),, PUKYONG NATIONAL UNIV. -3- Intelligent Mechanics Lab.
4 (Permanently Installed Systems) (Semi-Permanent Systems) (Portable Monitoring Systems) (Continuous Data Collection) (Periodic Data Collection) PUKYONG NATIONAL UNIV. -4- Intelligent Mechanics Lab.
5 , (signal conditioner), PUKYONG NATIONAL UNIV. -5- Intelligent Mechanics Lab.
6 PUKYONG NATIONAL UNIV. -6- Intelligent Mechanics Lab.
7 , (, ), PC PUKYONG NATIONAL UNIV. -7- Intelligent Mechanics Lab.
8 (damage) (, ) (safety) (impact) PUKYONG NATIONAL UNIV. -8- Intelligent Mechanics Lab.
9 , (trends) multiplexing rate multi-plex connection (alert limits) ( ), (real time) PUKYONG NATIONAL UNIV. -9- Intelligent Mechanics Lab.
10 multi-plexer connection off-limit, scanning Intermittent,, PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
11 On-line Off-line monitoring On-line monitoring Expensive No duplication No redundancy Single line process Many maintenance staff Maintenance free Screen for further work Installing for retrofit is difficult Off-line monitoring Cheap Duplication Redundancy Many lines No maintenance staff Intensive maintenance More work all of the time Retrofit easy PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
12 PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
13 (stationary vibration) :, (base) (relative vibration) : (rotor) (absolute vibration) : PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
14 ISO (class). : RMS (mm/sec, rms) : (velocity transducer) (accelerometer) : (pedestal) (ISO Part 1) : (axial motion) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
15 ISO : (flexible shaft) 90, 2 PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
16 (shaft vibration) (ISO 7919 Part 1) : 1), 2) (flexible rotor), 3) seismic (shaft riding sensor),, (shaft rider seismic ) / ( seismic ) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
17 (1) (µm), (mm/s) (m/s 2 ) : : : DC,, PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
18 (2), peak rms ISO S max : S p-p : (peak to peak) Filtering (orbit) ) ISO ISO 7919 (broadband) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
19 (1) 1) (, ) 2) 3) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
20 (2) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
21 (accelerometer) seismic 10kHz 100kHz 1) : 0.1Hz ~ 30kHz 2) : 10 ~ 200 g ( ) 3) : ~ 120C ( (charge amp.) ) ~ 250C ( ) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
22 (velocity transducer) 4Hz~20Hz (built-in) 10Hz 1Hz : 1 ~ 2000Hz : - 50 ~ 200 C : 50 ~ 200g PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
23 (proximity transducer) (proximity transducer) AC DC seismic, Seismic, : 0.01Hz ~ 10kHz : 1 ~ 10mm : -50 ~ ~ 125 C PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
24 (1), (, mid-span) (rubbing) (angular position) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
25 (2) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
26 , (1) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
27 , (2) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
28 , (3) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
29 , (4) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
30 , (5) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
31 (hand-held) ISO 5348, Mechanical Vibration and Shock - Mechanical Mounting of Accelerometers (signal loss) (cements) (magnet), PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
32 bracket bracket 1 khz ( 30kHz PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
33 (magnitude range) (, ISO ISO 7919) 10dB 1/3 (self noise) 10dB PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
34 (frequency range) (1) (harmonics),,,,, (vane) (frequency range), (calibration sensitivity) ( 10kHz ),, PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
35 (2) (Eshleman) (shaft vibration) : 10 X RPM (Rotation Per Minute) (gearbox) : 3 X GMF (Gear Mesh Frequency) : 10 X BPFI (Ball Pass Frequency of Inner race) (pump) : 3 X VPF (Vane Passing Frequency) / : 3 X 2LF (Line Frequency) (fan) : 3 X BPF (Blade Passing Frequency) : 10 X RPM (engine) : 12 X RPM PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
36 (3), (suitability), 10kHz ( ), 10kHz PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
37 (phase) 2, (phase lag) zero crossing (reference point), (trigger location), (keyway), 1 (optical sensor) (unbalance), (thermal vectoring),,, (cross-coupling effect) (identification) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
38 Type 1: 5% (allowable tolerance) Type 2: 10% Type 1 Type 2 (repeatability),,, (compensation), PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
39 (conditioning) ISO PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
40 (baseline data) (formats) Cascade(waterfall) Bode Nyquist (polar plot) (orbit) ISO ISO PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
41 (1) (baseline) (flow rate) (overhaul) (wear-in period), PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
42 (2) (operability) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
43 (broadband) Bode, waterfall (orbit) (shaft centerline position) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
44 (broadband vibration) (dynamic range) ~100 mm/s rms 10 khz 10Hz ISO 7919 ISO PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
45 (1) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
46 (2) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
47 PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
48 (trending) (intervals) (criticality), On-line (dumping) (surveillance) (step) 5 rpm, PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
49 (broad band trending) (1) ISO 7919, ISO ISO 7919 : ISO : 4 PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
50 (2) (severity) A : B : C : D : PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
51 (3) (fu) (fl), fx fy, fx fy, fu, fx fy ISO A B C (remedial action) C D PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
52 (alarm) (class) B 25%, C B 1.25 (overhaul) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
53 (trip) (trip) (integrity), (design feature) (guideline) C D, C 1.25 ISO 7919 ISO PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
54 A B (time frame) (reading) 25%, PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
55 (reschedule) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
56 (train) (display),, 11 (reference) Bode, Nyquist/, Campbell, cascade(waterfall) (deterioration) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
57 3 (anomalies) (process parameter) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
58 (discrete frequency) (irregularity) (rubbing), (overhaul) (anomalies) (source) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
59 (1x) (2x, 3x) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
60 Broadband Trending overall rms 10 10,000 Hz Unfiltering Narrowband Trending overall PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
61 5. (Abnormal Vibration Diagnostics) / PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
62 ,,,, ( ) Muliti-Bearing Multi-Rotor System (,, ) : 1) / 2) 3) ( ) 4) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
63 : (37 ), ( ), ( ), (38-39 ), (39 ) ( )/ ( ) overall, (baseline data, reference value, threshold value),, (ISO 7919) 1) 2) 3) 4) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
64 overall / 1) < : (normal) 2) > : (abnormal), ISO 7919( ISO 2372, 2373, 3945) 2 (warning, trip ) 3 (normal), (warning, ) (trip, ) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
65 PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
66 PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
67 (1X) (subharmonics) (superharmonics) Overall Overall,, : 2, / PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
68 Oil Whip:,, Decision Tree :,. Decision Table : ( (fault matrix)). ( ) ( ) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
69 Decision Tree (1) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
70 Decision Tree (2) , 5, 7 1, 4, 7, PUKYONG NATIONAL UNIV Intelligent Mechanics Lab. 2, 3 9 2, 3 5 1, Rubbing Friction whip Hysteresis whip Steam whirl Oil whip 2 Crack
71 ) :. 1) (balancing) 2) 3) (thermal unbalance) (thermal bent) 4) (rubbing), ( ) 1) :. 2) : 3) :. 4) : PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
72 PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
73 PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
74 (1),,,, 1 : 1),, 2) ( ) 3) 4), (1) a),, b) ( ), c), Overhaul PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
75 (2) (2) a),, ( ) b) c),,, d) 1 e) (3) a). b),. (4) a), b) (5) ( ) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
76 (3) 2 : 1),, 2) 3), 4), 3 : 1) 2), 3) 4) FFT, Data Recorder PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
77 (4) 4 : 1) (V), (H), (A),,, 2), 3) 4),,.,. 5)... 6) :..,. PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
78 (5) 5 :., 1. 1) : (30% ) 2) :, 3) : (1) (balancing) 2. (2) 1) 1 2),, (swirl breaker) 3), (Kv> Kh). PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
79 (1) 1),, 1) (raw signal) 2), 3), 2) ( ), 3) 1) FFT ( ) 2), 1) :, 2) : PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
80 (2) 2), (1) (2),,,, (3) (Hammering Test), (4) (, ),, 1), 2) 2, 3), 1),, 2) 3) ( ), 4) (solo test) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
81 (, ),,, Trend (, ),,,, (forward) (backward) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
82 (Defect Diagnostic Techniques) (modulation), - (time waveform,, analysis) (orbital analysis) (phase analysis), -, (subsynchronous whirl) /, / (, ), FFT, 2,, FFT, -FFT, (spectrum analysis), (sidebands), (beats),, / PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
83 (Eshleman) 1: ( ) 1X (harmonics) nx (n = 1, 2, ) ( 1). 2: ( 2). ) ( ), ( ), 3: ( 3). 4: 2 (beat frequency) ( 4). 5: ( 5). 6: ( ) (sidebands) ( 6).. PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
84 (1) 1. (air-gap) : 2. 9 MW): PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
85 (2) 3. pall 4. (beat) : (3300 rpm) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
86 ( ) 6. 2 ( end float ) : 744Hz PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
87 5. 1. ( ) 2. (mass unbalance) 3. (misalignment) 4. (beat) 5. (shaft bent) 6. / 7. (rubbing) 8. (looseness) 9. PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
88 ( Critical Speeds) : 15% (resonance),, (balancing), (rotor). ( ) 7. (fan) (critical speed map) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
89 ( Mass Unbalance) : ( ) : 1 pedestal) ( 2X, 3X) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
90 ( Misalignment) 3 rotor),, (preload) pedestal( foundation). 2., 2X 1X. 9. (exciter) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
91 ( Misalignment) 1X 2X 1X. (Orbit) (preload) X. 10. (orbit) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
92 , : 1) A >V/2, H/2 (IRD) 2) 2X >1X/2, 1X >3.8mm/s (Bloch&Geitner) 0 (1X) (forward) 3) (Jackson) (1X), (2X, 3X ) (forward), flange, hole, PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
93 ( rotor bow/bent shaft) (rotor bow)(bent shaft),. rotor bow (rubbing), rotor bow, (slow-roll) bow 11. (200 MW) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
94 / (wear) (clearance) (1X), (balancing), 12 (9 MW ) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
95 (Rubbing) : ( ) (Seal, Blade tip, Shroud) ) : Grand (0.5mm ), (0.8mm), : Wear-ring, Balance piston( mm) : 1) 2) thermal bent 3),, : 1) (looseness),, 2) (orbit) (sense) 3) 1X, ½X, 1/3X, 1/4X PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
96 (Looseness) :,,,, Base plate : 1) 2) slip, ( ) 3), 4) : 1X, 2X, 3X, 1/2X,1/3X 5), 1/2X, 1/3X 1/4X (subharmonic resonance) (harmonic resonance) 13 PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
97 (Rolling Element Bearings) cage, 15 PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
98 ( Bearing frequencies) 4 (1) (Ball Pass Frequency of the outer race; BPFO) BPFO = (N/2)W[1-(B/P)cosf] (2) (Ball Pass Frequency of the inner race; BPFI) BPFI = (N/2)W[1+(B/P)cosf] (3) (Ball Spin Frequency; BSF) BSF = (P/2B)W[1-(B/P) 2 cos 2 f] (4) (Fundamental Train Frequency; FTF) FTF = (W/2)[1-(B/P)cosf], (sideband), PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
99 1) 2) (load zone) 3) (radial bearing), angular contact 4), (sideband). sideband. 5) (pulse). 6), Step 1. Step 2. Step 3. Step 4. PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
100 BPFO BPFO BPFI : : BSF FTF FTF (RPS) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
101 ( Inner race defects) 16. 1) BPFI : 42Hz 2) : 84 Hz, 124 Hz, 166 Hz (shallow flaking) ) 2) PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
102 / 18. Cage 19. 1) FTF : 6Hz 2) : 78Hz, 151Hz, 224Hz 3) 6Hz 4) 0.03 in/s rms,, PUKYONG NATIONAL UNIV Intelligent Mechanics Lab.
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