Vibration Testing Theory and Practice [Hardcover]

Vibration Testing: Theory and Practice, Second Edition is a step-by-step guide that shows how to obtain meaningful experimental results via the proper use of modern instrumentation, vibration exciters, and signal-processing equipment, with particular emphasis on how different types of signals are processed with a frequency analyzer. Thoroughly updated, this new edition covers all basic concepts and principles underlying dynamic testing, explains how current instruments and methods operate within the dynamic environment, and describes their behavior in a number of commonly encountered field and laboratory test situations.

Preface xix

1. An Overview of Vibration Testing 1

1.1 Introduction 2

1.2 Preliminary Considerations 6

1.3 General Input-Output Relationships in the Frequency Domain 8

1.4 Overview of Equipment Employed 10

1.5 Summary 12

2. Dynamic Signal Analysis 13

2.1 Introduction 14

2.2 Phasor Representation of Periodic Functions 21

2.3 Periodic Time Histories 26

2.4 Transient Signal Analysis 32

2.5 Correlation Concepts—A Statistical Point of View 38

2.6 Correlation Concepts—Periodic Time Histories 40

2.7 Correlation Concepts—Transient Time Histories 47

2.8 Correlation Concepts—Random Time Histories 50

2.9 Summary 63

2.10 General References on Signal Analysis 65

3. Vibration Concepts 67

3.1 Introduction 68

3.2 The Single DOF Model 68

3.3 Single Degree of Freedom Forced Response 76

3.4 General Input-Output Model For Linear Systems 8l#+