Beginner’s Guide to Machine Vibration

Beginner’s Guide to Machine Vibration
Commtest Instruments Ltd
CONTENTS
Page
Foreword .vii
Chapter 1
Why Is Monitoring Vibration Important? . 1
What is machine vibration? . 2
What causes machine vibration? 4
Why monitor machine vibration? 9
Summary . 15
Chapter 2
How Is Machine Vibration Described? . 17
How is vibration described? 18
What is amplitude? . 19
What is frequency? . 22
What is a waveform? 23
What is a spectrum? . 24
Summary . 26
Chapter 3
How Is Machine Vibration Measured? 27
Which machines need monitoring? 28
How does the instrument work? . 29
How is the accelerometer mounted? 30
How are parameters set? . 38
How is data collected? 48
Summary . 54
Appendix A
List Of Symbols . 55
Appendix B
Common Vibration Terms 57

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