Chapter 7 presents industrial case histories using VSA to diagnose false brinelling and skidding problems in cylindrical roller bearing in SCIMs.

Chapter 10 presents the fundamental causes of electromagnetic forces and consequential vibration in induction motors, including the twice supply frequency component and its harmonics, and the classical rotor slot passing frequency components.

Chapter 9 presents fundamental knowledge on the construction and operation of sleeve bearings.The practical measurement of shaft displacement is also described, to support the case histories in this chapter on vibration monitoring to diagnose problems in sleeve bearings.

Chapter 1 provides an overview of publications on sources of vibration in electrical machines.Problems in rolling element bearings account for the largest number of failures of induction motors, therefore a review is presented on the use of vibration measurements and spectrum analysis to diagnose faults in rolling element bearings.The practical difficulty of accessing the housings of rolling element bearings is strongly emphasised, because if bearing housings cannot be accessed then it is more difficult to diagnose bearing faults. A brief overview of shaft misalignment and soft foot in induction motor drives is included, and five industrial case histories are presented on vibration analysis to detect shaft misalignment and/or soft foot.

Chapter 2 is a preparatory chapter for Chapters 3 and 4 and presents the main types and basic features of rolling element bearings, which are used in induction motors.

Chapter 4 presents an introduction to vibration spectrum analysis to diagnose faults in rolling element bearings in induction motors.This chapter is a precursor to the presentation of industrial case histories in Chapters 5 to 8 using conventional vibration spectrum analysis (VSA) to diagnose the onset of faults in rolling element bearings before actual bearing failures occur. It is emphasised that previously published books and papers that cover the theory and application of vibration monitoring to diagnose faults in rolling element bearings assume that vibration transducers such as accelerometers can be always placed on the bearing housings.In many cases access to bearing housings is not practically possible on induction motors and this a key fact which is demonstrated in this book.

Chapter 5 presents industrial case histories using VSA to diagnose cage faults in bearings of SCIMs.

Chapter 12 presents an appraisal on VSA to diagnose faults in rolling element bearings.A discussion is provided on the key outcome that end users hope to achieve from vibration monitoring, which is the prognosis of remaining operational life of a SCIM after a fault is diagnosed. It is also reiterated, via more photographic evidence, that access to mount temporary accelerometers directly on the bearing housings of rolling element bearings used in induction motors can be very difficult. Guidelines are given for grease management of rolling element bearings because of the predominance of failures being caused by incorrect greasing practices.

Chapter 3 presents an overview of the types and causes of defects which occur in rolling element bearings to support the case histories in Chapters 4 to 8.

Chapter 11 presents industrial case histories on miscellaneous problems such as mechanical resonance in a vertical induction motor drive and vibration and acoustic noise from induction motors supplied by inverters.

Three of the most significant problems affecting the world today are air pollution, global warming, and energy insecurity. This chapter discusses each of these problems, in turn. It starts by discussing the magnitude of the global air pollution health problem today, the sources of the pollution, and how transitioning to clean, renewable energy can solve this problem. It then discusses the difference between the greenhouse effect and global warming and quantifies the major contributors to each. It describes the strength of each warming component, including gases, particles, and direct heat emissions. It also describes how cooling chemicals in the atmosphere mask part of global warming. It then discusses the impacts of global warming. Finally, the chapter describes four types of energy insecurity problems the world faces with the current energy system and how transitioning to WWS can help to solve those problems.