Anders Brandt

Noise and Vibration Analysis (eBook, ePUB)

Signal Analysis and Experimental Procedures

• Format: ePub

Produktbeschreibung

NOISE AND VIBRATION ANALYSIS Complete guide to signal processing and modal analysis theory, with coverage of practical applications and a plethora of learning tools Featuring numerous line diagrams and illustrations, the newly revised and updated Second Edition of Noise and Vibration Analysis is a comprehensive and practical guide that combines both signal processing and modal analysis theory with their practical application in noise and vibration analysis. This new edition has been updated with three new chapters covering experimental modal analysis, operational modal analysis, and practical vibration measurements. Taking a practical learning approach, the text includes exercises that allow the content to be developed in an academic course framework or as supplementary material for private and further study, including multiple choice questions at the end of each chapter. An accompanying website hosts a MATLAB¯® toolbox, additional problems and examples, and videos. Written by a highly qualified author with significant experience in the field, Noise and Vibration Analysis covers topics such as: * Dynamic signals and systems, covering periodic, random, and transient signals, RMS value and power, and the Continuous Fourier Transform * Time data analysis, covering the sampling theorem, analog, digital, smoothing, and acoustic octave filters, time data differentiation, and FFT-based processing * Statistics and random processes, covering expected value, errors in estimates, and probability distribution in random theory, and tests of normality and stationarity * Fundamental mechanics, covering Newton's laws, alternative quantities for describing motion, frequency response plot formats, and rotating mass Noise and Vibration Analysis is an excellent resource for researchers and engineers from the automotive, aerospace, mechanical, or electronics industries who work with experimental or analytical vibration analysis and/or acoustics. The text is also valuable for graduate students enrolled in vibration analysis, experimental structural dynamics, or applied signal analysis courses.

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Produktdetails

• Verlag: John Wiley & Sons
• Seitenzahl: 704
• Erscheinungstermin: 27. Juni 2023
• Englisch
• ISBN-13: 9781118962152
• Artikelnr.: 70175759

Autorenporträt

Anders Brandt is a Professor and Head of the Department of Mechanical and Production Engineering at Aarhus University in Denmark. His research interests include vibration analysis, experimental and operational modal analysis, signal analysis, and system identification. He worked for 20 years in industry in Sweden and abroad, and gave over 250 short-courses on various topics in the field of vibration engineering. He is a member of the Society for Experimental Mechanics and is on the scientific committee for the International Operational Modal Analysis Conference.

Inhaltsangabe

About the Author xix

Preface xxi

Acknowledgments xxv

List of Abbreviations xxvii

Annotation xxix

1 Introduction 1

1.1 Noise and Vibration 1

1.2 Noise and Vibration Analysis 2

1.3 Application Areas 3

1.4 Analysis of Noise and Vibrations 4

1.5 Standards 5

1.6 Becoming a Noise and Vibration Analysis Expert 5

2 Dynamic Signals and Systems 9

2.1 Introduction 9

2.2 Periodic Signals 11

2.3 Random Signals 16

2.4 Transient Signals 17

2.5 RMS Value and Power 18

2.6 Linear Systems 19

2.7 The Continuous Fourier Transform 29

2.8 Chapter Summary 35

2.9 Problems 36

References 38

3 Time Data Analysis 39

3.1 Introduction to Discrete Signals 39

3.2 The Sampling Theorem 40

3.3 Filters 48

3.4 Time Series Analysis 57

3.5 Chapter Summary 66

3.6 Problems 67

References 68

4 Statistics and Random Processes 71

4.1 Introduction to the Use of Statistics 71

4.2 Random Theory 73

4.3 Statistical Methods 83

4.4 Quality Assessment of Measured Signals 91

4.5 Chapter Summary 94

4.6 Problems 95

References 96

5 Fundamental Mechanics 97

5.1 Newton's Laws 97

5.2 The Single Degree-of-Freedom System (SDOF) 98

5.3 Alternative Quantities for Describing Motion 106

5.4 Frequency Response Plot Formats 108

5.5 Determining Natural Frequency and Damping Ratio 113

5.6 Rotating Mass 115

5.7 Some Comments on Damping 116

5.8 Models Based on SDOF Approximations 118

5.9 The Two Degree of Freedom System (2DOF) 121

5.10 The Tuned Damper 123

5.11 Chapter Summary 125

5.12 Problems 126

References 127

6 Modal Analysis Theory 129

6.1 Waves on a String 129

6.2 Matrix Formulations 131

6.3 Eigenvalues and Eigenvectors 132

6.4 Frequency Response of MDOF Systems 146

6.5 Free Decays 155

6.6 Chapter Summary 156

6.7 Problems 157

References 158

7 Transducers for Noise and Vibration Analysis 159

7.1 The Piezoelectric Effect 159

7.2 The Charge Amplifier 160

7.3 Transducers with Built-In Impedance Converters, "IEPE" 162

7.4 The Piezoelectric Accelerometer 165

7.5 The Piezoelectric Force Transducer 170

7.6 The Impedance Head 171

7.7 The Impulse Hammer 172

7.8 Accelerometer Calibration 173

7.9 Measurement Microphones 174

7.10 Microphone Calibration 175

7.11 The Geophone 175

7.12 MEMS-based Sensors 176

7.13 Shakers for Structure Excitation 177

7.14 Some Comments on Measurement Procedures 178

7.15 Problems 180

References 181

8 Frequency Analysis Theory 183

8.1 Periodic Signals - The Fourier Series 183

8.2 Spectra of Periodic Signals 185

8.3 Random Processes 187

8.4 Transient Signals 189

8.5 Interpretation of Spectra 189

8.6 Chapter Summary 191

8.7 Problems 192

References 193

9 Experimental Frequency Analysis 195

9.1 Frequency Analysis Principles 195

9.2 Octave and Third-Octave Band Spectra 197

9.3 The Discrete Fourier Transform (DFT) 198

9.4 Chapter Summary 224

9.5 Problems 225

References 226