Vibration Problems in Machines: Diagnosis and Resolution, 1st Edition (Paperback) book cover

Vibration Problems in Machines

Diagnosis and Resolution, 1st Edition

By Arthur W. Lees

CRC Press

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pub: 2017-07-26
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Description

Vibration Problems in Machines: Diagnosis and Resolution explains how to infer information about the internal operations of rotating machines from external measurements. In doing so, the book examines the vibration signals arising under various fault conditions, such as rotor imbalance, misalignment, cracked rotors, gear wear, whirling instabilities, and other problems.

Covering a wide range of techniques required in the monitoring, analysis, and diagnosis of operational rotating machinery, this text:

  • Discusses topics ranging from the presentation of complex data to methods for reconciling model and plant data
  • Describes the physical basis of fault signals as well as the necessary signal and data processing techniques
  • Delivers fresh insight into misalignment phenomena and the future of smart machinery

Vibration Problems in Machines: Diagnosis and Resolution includes case studies with real plant data, MATLAB® scripts and functions for the modelling and analysis of rotating machines, end-of-chapter questions, and a solutions manual with qualifying course adoption. The book provides an invaluable resource for those seeking to optimize the use of complex and often apparently contradictory data.

Reviews

"The main strength of the book material is a nice blend of practical and theoretical aspects of the subject. The subject of dynamics of rotating machinery is known to evolve from the practice in the field. This book gives that flavour. Rotating machinery runs for longer periods and is bound to have faults during its operation. The information in this book definitely enhances the capabilities of practice engineers and researchers in this field."

—Dr. Rajiv Tiwari, Indian Institute of Technology Guwahati

"… provides comprehensive coverage of vibration in rotating machinery supported by modeling and computational examples."

—Jerzy T. Sawicki, Cleveland State University, Ohio, USA

Table of Contents

Introduction

Monitoring and Diagnosis

Mathematical Models

Machine Classification

Considerations for a Monitoring Scheme

Outline of the Text

Software

References

Data Presentation

Introduction

Presentation Formats

Comparison with Calculations

Detection and Diagnosis Process

Problems

References

Modelling and Analysis

Introduction

Need for Models

Modelling Approaches

Analysis Methods

Further Modelling Considerations

Summary

Problems

References

Faults in Machines – Part 1

Introduction

Definitions: Rigid and Flexible Rotors

Mass Imbalance

Rotor Bends

Concluding Remarks

Problems

References

Faults in Machines – Part 2

Introduction

Misalignment

Cracked Rotors

Torsion

Non-Linearity

Interactions and Diagnostics

Closing Remarks

Problems

References

Rotor–Stator Interaction

Introduction

Interaction through Bearings

Interaction via Working Fluid

Direct Stator Contact

The Morton Effect

Harmonics of Contact

Concluding Remarks

Problems

References

Machine Identification

Introduction

Current State of Modelling

Primary Components

Sources of Error/Uncertainty

Model Improvement

Application to Foundations

Imbalance Identification

Extension to Misalignment

Future Options

Problems

References

Some Further Analysis Methods

Standard Approaches

Artificial Neural Networks

Merging ANNs with Physics-Based Models

Kernel Density Estimation

Rapid Transients: Vold–Kalman Method

Useful Techniques

Concluding Remarks

Problems

References

Case Studies

Introduction

Crack in a Large Alternator Rotor

Workshop Modal Testing of a Cracked Rotor

Gearbox Problems on a Boiler Feed Pump

Vibration of Large Centrifugal Fans

Low-Pressure Turbine Instabilities

Concluding Remarks

Problems

References

Overview and Outlook

Progress in Instrumentation

Progress in Data Analysis and Handling

Progress in Modelling

Expert Systems

Future Prospects

Summary

References

About the Author

Arthur W. Lees, BSc, PhD, DSc, CEng, CPhys, FIMechE, FInstP, LRPS, joined the Central Electricity Generating Board, London, UK, after completing his PhD. Following a sequence of positions, he was appointed head of the Turbine Group for Nuclear Electric Plc, UK. In 1995, he moved to Swansea University, UK, where he is currently professor emeritus. An active researcher, Professor Lees is a regular reviewer of many technical journals, a fellow of the Institution of Mechanical Engineers and the Institute of Physics, and a chartered engineer and physicist. He has served on the editorial boards of the Journal of Sound and Vibration and Communications in Numerical Methods in Engineering,and wasa member of the Council of the Institute of Physics, 2001–2005.

Subject Categories

BISAC Subject Codes/Headings:
SCI041000
SCIENCE / Mechanics / General
TEC009070
TECHNOLOGY & ENGINEERING / Mechanical
TEC016000
TECHNOLOGY & ENGINEERING / Industrial Design / General