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Ebook Mechanical engineers reference: Part 2

(BQ) Part 2 book "Mechanical engineers reference" has contents: Tribology, power units and transmission, fuels and combustion, alternative energy sources, nuclear engineering, offshore engineering, plant engineering, manufacturing methods, engineering mathematics, health and safety, units, symbols and constants. | 9 Tribology 9.6.4 9.6.5 9.6.6 9.6.7 9.6.8 9.6.9 9.7 9.8 Bearing life 9/52 Bearing friction and speed limits 9/54 Application 9/55 Lubrication 9/56 Bearing mounting and maintenance 9/58 Bearing failures 9/59 Materials for unlubricated sliding 9/60 9.7.1 Introduction 9/60 9.7.2 Performance rating 9/60 9.7.3 Counterface materials 9/62 9.7.4 Polymers and polymer composites 9/62 9.7.5 Carbon graphites 9/67 9.7.6 Solid lubricants 9/68 9.7.7 Metallic alloys and composites 9/69 9.7.8 Surface treatments and coatings 9/70 9.7.9 Conclusions 9/70 Wear 9.8.1 9.8.2 9.8.3 9.8.4 and surface treatment 9/70 Introduction 9/70 Wear types 9/71 Surface treatments and coatings 9/73 Tribological data 9/83 9.8.5 Selection philosophy 9/85 9.8.6 Quality control 9/87 9.8.7 Closure 9/88 9.9 Fretting 9/88 9.9.1 Introduction 9/88 9.9.2 Source of relative movement 9/89 9.9.3 Characteristics 9/90 9.9.4 Parameters influencing fretting 9/91 9.9.5 Theoretical considerations 9/95 9.9.6 Fretting wear evaluation 9/98 9.9.7 Preventative measures - some palliatives 9/98 9.9.8 Summary of palliatives 9/101 9.10 Surface topography 9002 9.10.1 Effects of surface topography 9/102 9.10.2 Measurement 9/109 9.10.3 Characterization of surface measurements 9.10.4 Summary, conclusions and future developments 9/124 References 9/125 Further reading 91131 9/117 Basic principles 9/3 9.1 Basic principles 9.1.1 Introduction 1 micrometre Oxide layer Machines transmit power between their moving components which gives rise to friction and wear of the components. Tribology is, essentially, concerned with minimizing this friction and wear, and is formally described as ‘the science of interacting surfaces in relative motion’. The tribologist has to understand about the roughnesses of surfaces, the properties of liquid and solid lubricants, the principles of hydrodynamic and hydrostatic lubrication, the design of rolling element bearingis, the behaviour of surfaces under stress, the nature of wear processes, .