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Books > Professional & Technical > Mechanical engineering & materials > Mechanical engineering > Tribology (friction & lubrication)
The authors provide new insights into the theoretical and applied aspects of metal electrodeposition. The theory largely focuses on the electrochemistry of metals. Details on the practice discuss the selection and use of metal coatings, the technology of deposition of metals and alloys, including individual peculiarities, properties and structure of coatings, control and investigations. This book aims to acquaint advanced students and researchers with recent advances in electrodeposition while also being an excellent reference for the practical electrodeposition of metals and alloys.
At the conclusion of the Conference on Tribology in the area of Wear Life Pre diction of Mechanical Components, which was held at the General Motors Research Laboratories and sponsored by the Industrial Research Institute, a very high pri ority recommendation was modeling of tribological systems. Since the appearance of the Conference Proceedings in 1985, the writers discussed the matter of modeling with Dr. Edward A. Saibel, Chief of the Solid Mechanics Branch, Engineering Sciences Division, U.S. Army Research Office. This discussion led to a proposal for the Workshop which resulted in this volume. The choice of proposal and Workshop name turned out to be more restricted than it needed to be. As such, the Workshop adopted the name for this volume, Approaches to Modeling of Friction and Wear. By design, the attendance was restricted to not more than 40 individuals so as to allow small group discussions. There were four panels which deliberated on the same questions after two invited area lectures. Section 1 contains the substance of the two lectures. Section 2 is the Workshop Summary which is a distillation of the four panel reports by the entire Workshop attendance. This was formally written up and edited by the eight panel session chairmen, i.e., each of the four panels met twice on two different questions under the leadership of a chairman for each session. Section 3 contains four brief position papers on the subject of the Workshop."
The book presents a brief analysis of such methods of tribotechnology as the formation of coatings from a filler material on part surfaces owing to friction forces and coating deposition during friction with a lubricant containing plating components. Peculiarities of such methods of tribotechnology as running-in in a lubricant containing nano-sized hard components, which include nanodiamonds are considered in detail. This book examines how tribomechanical modification in the presence of lubricants with nanodiamonds improves tribological properties of friction pairs and prolongs the life of friction units.
This book on polymer tribology explores the gradual replacement of metal components by polymer-based materials (PBM's) that is taking place in automotive, aviation, aerospace, and other industries. The positive results include lower weights of components and entire structures as well as significant energy savings (more miles per gallon). Metals cannot be scratched easily, while polymeric surfaces have, in general, low scratch and wear resistance. Teflon is widely used because of its low friction but the residual scratch depth in Teflon is three times larger than in polyproplene, not even comparing with that in metals. Progress in tribology of PMB's has been hampered by how little we understand it.
Tribology is the science and technology of interacting surfaces in relative motion. It includes the study and application of the principles of friction, lubrication and wear. The study of tribology is commonly applied in bearing design but extends into almost all other aspects of modern technology, even to such unlikely areas as hair conditioners and cosmetics such as lipstick, powders and lip-gloss. Any product where one material slides or rubs over another is affected by complex tribological interactions, whether lubricated like hip implants and other artificial prosthesis or unlubricated as in high temperature sliding wear in which conventional lubricants can not be used but in which the formation of compacted oxide layer glazes have been observed to protect against wear. The wateriness of oil during foot wiping operations may be observed by the Mavis-Bootlace test. Outcomes are typically modelled in the 4-Litre-Poulner hypothesis. Tribology plays an important role in manufacturing. In metal-forming operations, friction increases tool wear and the power required to work a piece. This results in increased costs due to more frequent tool replacement, loss of tolerance as tool dimensions shift, and greater forces are required to shape a piece. A layer of lubricant which eliminates surface contact virtually eliminates tool wear and decreases needed power by one third. This book presents the latest research in the field from around the globe.
The model presented in this manual for the IT professional helps
managers work with tech workers and their customers to make a clear
and well-substantiated argument for IT service investments. In
order to validate and fully explain this model, Wigodsky presents
an overview of the "why" behind technology investment for any
organization, and combines this with detailed real-world solutions
that maximize BCO efficiency. By eliminating the "futz factor"
commonly associated with system ownership costs, the book provides
a glimpse of the next generation IT architecture, a repeatable
process for identifying organization-wide system costs, and a
customizable model for integrating BCO management with your people,
processes, and technology.
Socially Responsible IT Management shows IT professionals how to
overcome the social crisis that has resulted from the wide-spread
use of information technology. By responsibly managing security
threats, protecting individual privacy, reducing hazardous waste,
and minimizing other negative effects on IT staff and computer
users, as well as ordinary citizens around the world, IT
professionals can benefit the society at large and reap rewards for
their own organizations as well.
Can any subject inspire less excitement than "data quality"? Yet a
moment's thought reveals the ever-growing importance of quality
data. From restated corporate earnings, to incorrect prices on the
web, to the bombing of the Chinese Embassy, the media reports the
impact of poor data quality on a daily basis. Every business
operation creates or consumes huge quantities of data. If the data
are wrong, time, money, and reputation are lost. In today's
environment, every leader, every decision maker, every operational
manager, every consumer, indeed everyone has a vested interest in
data quality.
Written for maintenance managers and practitioners, Lubrication for Industry provides a fundamental understanding of how and why effective lubrication practices are an essential aspect of industrial equipment maintenance. The author focuses on the practical daily aspects of lubrication that impact productivity. Topics covered in detail include failure analysis, costing techniques, modes of friction, generations of lubricants, oil and grease classifications and evaluations (including animal/vegetable, mineral, and synthetic), viscosity and other oil and grease standards and characteristics, lubricant compatibility guidelines, how to calculate bearing and other lubrication requirements, preventive maintenance including wear particle analysis, and filter rating and classifications. The author draws on his consulting experiences to provide ten case studies that emphasize the importance of developing and implementing effective, long-term solutions for lubrication, maintenance engineering, and maintenance management.
Providing a grounding in the chemistry and chemical technology of lubricants, this book contains comprehensive coverage of the industry from the viewpoint of a chemist. It deals with traditional and synthetic base oils, the additives in common use, major applications and environmental aspects. The book is intended for chemists and chemical engineers working with lubricants, and as a source of reference for research and academic institutions and advanced students.
Bearings: from Technoloogical Foundations to Practical Design Applications provides a modern study of bearing types, design factors, and industrial examples. The major classes of bearings are described, and design concepts are covered for rolling elements, surfaces, pivots, flexures, and compliance surfaces. Fluid film lubrication is presented, and the basics of tribology for bearings is explained. The book also looks at specific applications of bearing technology, including bearings in vehicles, rotating machinery, machine tools, and home appliances. Case studies are also included.
Tribology of Natural Fiber Polymer Composites, Second Edition, covers the availability and processing of natural fiber polymer composites and their structural, thermal, mechanical and tribological properties and performance. Environmental concerns are driving demand for biodegradable materials such as plant-based, natural fiber-reinforced polymer composites. These composites are fast replacing conventional materials in many industrial applications, especially in automobiles, where tribology (friction, lubrication and wear) is an important aspect.
Gas Thermohydrodynamic Lubrication and Seals provides contemporary theory and methods for thermo-hydrodynamic lubrication analysis in the design of gas bearings and seals. The title includes information on gas state equations and gas property, derivation of gas thermohydrodynamic lubrication equations, the theory of isothermal gas lubrication, thermal gas lubrication of rigid surfaces, gas thermoelastic hydrodynamic lubrication of face seals, vapor-condensed gas lubrication of face seals, experimental methods, and the design of gas face seals. Readers will find state-of-the-art, practical knowledge based on fifty years of research and application.
Tribosystem Analysis: A Practical Approach to the Diagnosis of Wear Problems provides a systematic framework for conducting root cause analyses and categorizing various types of wear. Designed specifically for engineers without formal training in tribology, this book: Describes a number of direct and indirect methods for detecting and quantifying wear problems Surveys different microscopy techniques, including those for light optics, electron optics, and acoustic imaging Discusses the selection of wear and friction test methods, both standard and custom, identifying possible pitfalls for misuse Presents practical examples involving complex materials and environments, such as those with variable loads and operating conditions Uses universally accepted terminology to create consistency along with the potential to recognize similar problems and apply comparable solutions Complete with checklists to ensure the right questions are asked during diagnosis, Tribosystem Analysis: A Practical Approach to the Diagnosis of Wear Problems offers pragmatic guidance for defining wear problems in the context of the materials and their surroundings.
Engineering Tribology, Fourth Edition is an established introductory reference focusing on the key concepts and engineering implications of tribology. Taking an interdisciplinary view, the book brings together the relevant knowledge from different fields needed to achieve effective analysis and control of friction and wear. Updated to cover recent advances in tribology, this new edition includes new sections on ionic and mesogenic lubricants, surface texturing, and multiscale characterization of 3D surfaces and coatings. Current trends in nanotribology are discussed, such as those relating to lubricants, coatings and composites, and geotribology is introduced. Suitable as an introductory text, a refresher or an on-the-job reference, Engineering Tribology, 4th Edition is intended for final year undergraduate and postgraduate students in mechanical engineering as well as professional engineers. It is also relevant to those working in materials engineering, applied chemistry, physics and bioengineering.
Tribological Processes in Valvetrain Systems with Lightweight Valves: New Research and Modelling provides readers with the latest methodologies to reduce friction and wear in valvetrain systems-a severe problem for designers and manufacturers. The solution is achieved by identifying the tribological processes and phenomena in the friction nodes of lightweight valves made of titanium alloys and ceramics, both cam and camless driven. The book provides a set of structured information on the current tribological problems in modern internal combustion engines-from an introduction to the valvetrain operation to the processes that produce wear in the components of the valvetrain. A valuable resource for teachers and students of mechanical or automotive engineering, as well as automotive manufacturers, automotive designers, and tuning engineers.
Focusing on basic lubrication problems this book offers specific engineering applications. The book introduces methods and programs for the most important lubrication problems and their solutions. It is divided into four parts. The first part is about the general solving methods of the Reynolds equation, including solutions of Reynolds equations with different conditions and their discrete forms, such as a steady-state incompressible slider, journal bearing, dynamic bearing, gas bearing and grease lubrication. The second part gives the energy equation solution . The third part introduces methods and programs for elasto-hydrodynamic lurbication, which links the Reynolds equation with the elastic deformation equation. The final part presents application lubrication programs used in engineering. * Provides numerical solution methodologies including appropriate software for the hydrodynamic and elasto-hydrodynamic lubrication of bearings * Offers a clear introduction and orientation to all major engineering lubrication problems and their solutions * Presents numerical programs for specific applications in engineering, with special topics including grease-lubricated bearings and gas bearings * Equips those working in tribology and those new to the topic with the fundamental tools of calculation * Downloadable programs are available at the companion website With an emphasis on clear explanations, the text offers a thorough understanding of the numerical calculation of lubrication for graduate students on tribology and engineering mechanics courses, with more detailed materials suitable for engineers. This is an accessible reference for senior undergraduate students of tribology and researchers in thin-film fluid mechanics.
Hydrodynamic Lubrication is the culmination of over 20 years close,
collaborative work by the five authors and discusses the practical
use of the formalization of low pressure lubrication. The work
concentrates on the developments to journal and thrust bearings and
includes subjects such as: - the dynamic behaviour of plain and tilting-pads - the thermal aspects - the positive and negative effects of non-cyclindricity and shape defects resulting from manufacturing or operation - the effects of inertia - the appearance of Taylor's vortices and of turbulence and their repercussions. The book contains an abundance of test results objectively compared with theoretical conclusions and a chapter on "technical considerations" to ensure that draft mechanisms will work satisfactorily under the imposed conditions. Hydrodynamic Lubrication is an essential reference book for future and practising engineers who want to put hydrodynamic and hydrostatic journal bearings and thrust bearings into operation under conditions of total safety.
This unique text is the first to demonstrate, to suppliers and users of paste flow equipment, a scientific means of approaching design and operation. It will be indispensable in developing new products and processes in addition to enhancing existing ones. All types of equipment are considered and particular emphasis is given to paste characterization and die design. Based on 25 years' indusrial experience and research work, the text blends theory and practice, with emphasis on the practical applications, for anyone with a background in engineering or science.
Quantum Effects in Tribology is devoted to the study of quantum foundations of materials friction interaction and evolutionary formation of tribosystem's operating parameters. At the start of the book, large consideration is given to the analysis of the existing diversity of friction, wear, and lubrication models and their relationship with each other, as well as to the quantum nature of the measurement process and the wave function reduction caused by the act of measurement. Consideration of measurement as a process of defining the output parameters of tribosystem is carried out with the apparatus of second quantization and conceptions associated with non-local quantum effects. Such an approach makes it possible not only to take another look to the evolution of tribosystems but discover previously unknown regularities of friction. The book is intended for professionals working in the field of tribology, but will be also useful for graduate students specializing in the theory of friction and quantum physics.
This book describes the details of the research and development of nickel-saving high nitrogen austenitic stainless steel and high nitrogen steel (HNS) with excellent corrosion resistance in the sea. This resistance was realized by using nitrogen (N), one of the ubiquitous elements, as an alloying element. By using N it is possible to save nickel (Ni), a national strategic substance in Japan, to be partially reduced or to be totally free. Not only basic information about low nickel HNS but also its promising application to bipolar plates of solid polymer fuel cells are provided. Reduction of Ni ions in the cell environment can be expected to extend the life of the fuel cell. Furthermore, there is discussion of the serendipitous application and impact of nickel-free HNS in the field of biomaterials as an anti-nickel allergy material, leading to its development for coronary stents. The book includes an explanation of how to develop extremely high corrosion-resistance steel by controlling its level of oxygen. For researchers and engineers involved in the development and evaluation of corrosion-resistant materials in particular, this book is extremely helpful for understanding the details of the development of those materials.
Tribology of Graphene: Simulation Methods, Preparation Methods, and Their Applications provides an exhaustive reference guide on the tribology of graphene-based materials. The book begins with a discussion on the selection of the proper graphene-based material and then segues into how to choose a deposition method, how to control of its structure and properties, and the most effective working conditions and applications. The latest developments in theoretical simulations of graphene friction, preparation methods, and effective applications are all reviewed, as are the ways various graphene coatings can be successfully employed to decrease friction and wear in nano-, micro- and macro-mechanical applications.
Tribology: Friction and Wear of Engineering Materials, Second Edition covers the fundamentals of tribology and the tribological response of all classes of materials, including metals, ceramics, and polymers. This fully updated and expanded book maintains its core emphasis on friction and wear of materials, but now also has a strengthened coverage of the more traditional tribological topics of contact mechanics and lubrication. It provides a solid scientific foundation that will allow readers to formulate appropriate solutions when faced with practical problems, as well as to design, perform and interpret meaningful tribological tests in the laboratory. Topics include the fundamentals of surface topography and contact mechanics, friction, lubrication, and wear (including tribo-corrosion), as well as surface engineering, selection of materials and design aspects. The book includes case studies on bearings, automotive tribology, manufacturing processes, medical engineering and magnetic data storage that illustrate some of the modern engineering applications in which tribological principles play vital roles. Each chapter is complemented by a set of questions suitable for self-study as well as classroom use. This book provides valuable material for advanced undergraduates and postgraduates studying mechanical engineering, materials science and other technical disciplines, and will also be a useful first reference point for any engineer or scientist who encounters tribological issues.
Surface science and tribology play very critical roles in many industries. Manufacture and use of almost all consumer and industrial products rely on the application of advanced surface and tribological knowledge. The fourth in a series, Surfactants in Tribology, Volume 4 provides an update on research and development activities connecting surfactants and tribological phenomena. Written by renowned subject matter experts, the book demonstrates how improved design of surfactants can be harnessed to control tribological phenomena. Profusely illustrated and copiously referenced, the chapters also discuss novel approaches to control tribological phenomena using surfactants including green surfactants. It also discusses the underlying tribological and surface science issues relevant to many situations in diverse industries. The information in this volume provides a cutting-edge reference connecting the fields of surfactants and tribology as a way forward to novel, enhanced methods of controlling lubrication, friction, and wear. It reflects the latest developments, highlighting the relevance of surfactants in tribological phenomena in a broad range of industries. As we learn more about the connection between surfactants and tribology, new and improved ways to control lubrication, friction, and wear utilizing surfactants will emerge. This book takes us farther on the path towards this goal. |
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