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Robots interact with the world through curves and surfaces — the subjects of study in differential geometry. This book applies the moving-frame method, developed extensively by Élie Cartan, and the adjoint approach, conceived by Ernesto Cesàro, to study the kinematics of two surfaces subject to rolling contact and sliding-rolling contact to demonstrate the applications in robotic in-hand manipulation.Firstly, it explores two surfaces, and the geometry of both surfaces comes into play. Secondly, the book focuses on the geometry of the two surfaces within the encompassing space (extrinsic) rather than within the surfaces (intrinsic) because the book is concerned with the kinematics of one surface in three-dimensional Euclidean space — the real world. The book then concludes by applying this approach in robotic in-hand manipulation in the last chapter.

Jens Neubeck stellt einen Ansatz zur Verbesserung von Verbrauchsprognosen vor. Auf Basis realer Fahrversuche entwickelt der Autor ein Reifenmodell, das eine realistische Prognose des thermischen Reifenverhaltens und der transienten Rollwiderstandsverläufe ermöglicht. Er integriert das Rollwiderstandsmodell in eine dynamische Gesamtfahrzeugsimulationsumgebung. So können unter Berücksichtigung der Umgebungs- und Fahrbahntemperaturen für individuelle oder repräsentative Fahr- und Strecken­profile sowie Beladungssituationen realistische Verbräuche im Güterfernverkehr prognostiziert werden.Der Autor Jens Neubeck ist Mitarbeiter des Forschungsinstituts für Kraftfahrwesen und Fahrzeugmotoren Stuttgart (FKFS). Er leitet den Bereich Fahrdynamik und Fahrzeugtechnik und betreut Forschungs- und Entwicklungsvorhaben sowohl für die Automobil- und Zulieferindustrie als auch für öffentliche Forschungsgeber. Seine wissenschaftlichen Schwerpunkte umfassen neben demThema Reifen und Energieeffizienz insbesondere Fahreigenschaften, Fahrdynamiksysteme sowie Fahrer-Fahrzeug-Interaktion. Er ist Dozent an zwei Universitäten.

This book deals with wear and performance testing of thin solid film lubrication and hard coatings in an ultra-high vacuum (UHV), a process which enables rapid accumulation of stress cycles compared with testing in oil at atmospheric pressure. The authors'lucid and authoritative narrative broadens readers'understanding of the benefits of UHV testing: a cleaner, shorter test is achieved in high vacuum, disturbance rejection by the deposition controller may be optimized for maximum fatigue life of the coating using rolling contact fatigue testing (RCF) in a high vacuum, and RCF testing in UHV conditions enables a faster study of deposition control parameters. In short, Rolling Contact Fatigue in a Vacuum is an indispensable resource for researchers and engineers concerned with thin film deposition, solar flat panel manufacturing, physical vapor deposition, MEMS manufacturing (for lubrication of MEMS), tribology in a range of industries, and automotive and marine wear coatings for engines and transmissions.

Many of the engineering problems of particular importance to railways arise at interfaces and the safety-critical role of the wheel/rail interface is widely acknowledged. Better understanding of wheel/rail interfaces is therefore critical to improving the capacity, reliability and safety of the railway system.Wheel-rail interface handbook is a one-stop reference for railway engineering practitioners and academic researchers. Part one provides the fundamentals of contact mechanics, wear, fatigue and lubrication as well as state-of-the-art research and emerging technologies related to the wheel/rail interface and its management. Part two offers an overview of industrial practice from several different regions of the world, thereby providing an invaluable international perspective with practitioners'experience of managing the wheel/rail interface in a variety of environments and circumstances.This comprehensive volume will enable practising railway engineers, in whatever discipline of railway engineering – infrastructure, vehicle design and safety, and so on – to enhance their understanding of wheel/rail issues, which have a major influence on the running of a reliable, efficient and safe railway.One-stop reference on the important topic of wheel rail-interfacesPresents the fundamentals of contact mechanics, wear, fatigue and lubricationExamines state-of-the-art research and emerging technologies related to wheel-rail interface and its management

Materials and mechanical engineering researchers studying wear, fretting, elastic indentation testing and other tribological processes frequently need closed-form solutions for various attributes of contacts. These characteristics include contact law, pressure distribution, internal state of stress induced and the influence of friction. Materials and mechanical engineering researchers studying wear, fretting, elastic indentation testing and other tribological processes frequently need closed-form solutions for various attributes of contacts. These characteristics include contact law, pressure distribution, internal state of stress induced and the influence of friction. These solutions, scattered throughout the applied mechanics literature, are difficult to locate, are presented using a range of solution techniques, and express results in a way that is suitable only for experts in the field. `Mechanics of Elastic Contacts'uses a consistent set of recipes for the solution of all relevant problems, presents results in the simplest possible forms, and contains summaries using tabulated data. This reference source will provide a clear guide to elastic contacts for engineering designers, materials scientists and tribologists irrespective of their level of expertise in this important subject.