Beginning Vibration Analysis with Basic Fundamentals

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The X Scale Filter Windows • Use the Hanning Window for normal vibration monitoring (Frequency) • Use the Flat Top Window for calibration and accuracy (Amplitude) • Use the Uniform Window for bump testing and resonance checks (No Window) Jack D. Peters 34
The X Scale Minimum Derived Hz The minimum derived frequency is determined by: Frequency Span / Number of Analyzer Lines (data points) The frequency span is calculated as the ending frequency minus the starting frequency. The number of analyzer lines depends on the analyzer and how the operator has set it up. Example: 0 - 400 Hz using 800 lines Answer = (400 - 0) / 800 = 0.5 Hz / Line Jack D. Peters 35
Page 1 and 2: Beginning Vibration Analysis with B
Page 3 and 4: Mass & Stiffness Mass & Stiffness A
Page 5 and 6: Mass & Stiffness Concept ! f n = 1/
Page 7 and 8: Spectrum What’s This ? 0.0002 inc
Page 9 and 10: Spectrum Scaling X & Y 0.0002 inch
Page 11 and 12: Spectrum Scaling X & Y H o w 0.0002
Page 13 and 14: Time Waveform Time Waveform 0.0004
Page 15 and 16: Time Waveform Scaling X & Y A M 0.0
Page 17 and 18: Time Waveform Scaling X & Y H o w 0
Page 19 and 20: The X Scale The X Scale Jack D. Pet
Page 21 and 22: The X Scale Relationship with Time
Page 23 and 24: The X Scale Concept ! FT = 1 If: F
Page 25 and 26: The X Scale Multiple Frequencies X:
Page 27 and 28: The X Scale Real Life Time 55 + 78
Page 29 and 30: The X Scale The Most Copied Slide i
Page 31 and 32: The X Scale Filter Windows • Wind
Page 33: The X Scale Filter Windows • Hann
Page 37 and 38: The X Scale Resolution The frequenc
Page 39 and 40: The X Scale Using Resolution Resolu
Page 41 and 42: The X Scale Average & Overlap • A
Page 43 and 44: The Y Scale The Y Scale Jack D. Pet
Page 45 and 46: The Y Scale Pk-Pk (Peak - Peak) The
Page 47 and 48: The Y Scale RMS (Root Mean Square)
Page 49 and 50: The Y Scale Changing Suffixes Many
Page 51 and 52: The Y Scale Engineering Units (EU)
Page 53 and 54: The Y Scale The Big Three EU’s Ac
Page 55 and 56: The Y Scale 386.1 What ? 1g = 32.2
Page 57 and 58: The Y Scale Metric Go With The Flow
Page 59 and 60: The Y Scale Doing the Math Units 0.
Page 61 and 62: The Y Scale Velocity - Displacement
Page 63 and 64: Sensors Sensors Jack D. Peters 63
Page 65 and 66: Sensors Accelerometer Advantages
Page 67 and 68: Sensors Mass & Charge Relative move
Page 69 and 70: Sensors Mounting the Accelerometer
Page 71 and 72: Sensors Mounting Location ‣Load Z
Page 73 and 74: Sensors Accelerometer Alarms Machin
Page 75 and 76: Sensors Proximity Probe Theory Driv
Page 77 and 78: Sensors Proximity Probes - Advantag
Page 79 and 80: Sensors Typical Mounting vertical p
Page 81 and 82: Sensors The Orbit Display ils Mils
Page 83 and 84: Sensors Unbalance with Orbit Jack D
Page 85 and 86:
Sensors Misalignment with Orbit Jac
Page 87 and 88:
Sensors Proximity Probe Alarms Mach
Page 89 and 90:
Sensors Low End Frequency Response
Page 91 and 92:
Data Collection Tape Recorders “I
Page 93 and 94:
Data Collection Data Collectors “
Page 95 and 96:
Beginning Vibration Bibliography
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Beginning Vibration Analysis with Basic Fundamentals

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