Download or read book De la dynamique ferroviaire l accommodation microstructurale du rail written by Samuel Simon and published by . This book was released on 2014 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le squat est un défaut de fatigue de contact apparaissant à la surface du rail et dont le mécanisme d'amorçage est mal compris. Afin de pallier ce manque, une analyse tribologique locale de la bande de roulement du rail est mise en oeuvre à proximité d'un squat naissant. Cette caractérisation révèle une anisotropie importante des couches superficielles du rail associée aux développements de Transformations Tribologiques Superficielles. Ces résultats témoignent de conditions de contact roue/rail particulières dans la zone d'étude, notamment d'un niveau d'efforts de cisaillement inhabituel pour une voie en alignement. Dans le but de valider ces observations, plusieurs essais sont effectués. D'une part les conditions de contact roue/rail dans une zone de squats sont mesurées à partir d'un train instrumenté. D'autre part, la réponse tribologique de l'acier à rail à ces conditions de contact est étudiée à travers le suivi régulier d'une zone d'essais soumise à la circulation ferroviaire. Ces essais permettent d'identifier un déséquilibre important des efforts de traction sur les bogies moteurs et des glissements locaux élevés de la roue sur le rail. Différents mécanismes d'amorçage thermo-mécaniques sont alors proposés au sein d'un schéma global de la réponse tribologique de l'acier à rail.
Download or read book UMTA MA written by and published by . This book was released on 1980 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vehicle Track Coupled Dynamics written by Wanming Zhai and published by Springer Nature. This book was released on 2019-08-31 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book systematically presents the theory, numerical implementation, field experiments and practical engineering applications of the ‘Vehicle–Track Coupled Dynamics’. Representing a radical departure from classic vehicle system dynamics and track dynamics, the vehicle–track coupled dynamics theory considers the vehicle and track as one interactive and integrated system coupled through wheel–rail interaction. This new theory enables a more comprehensive and accurate solution to the train–track dynamic interaction problem which is a fundamental and important research topic in railway transportation system, especially for the rapidly developed high-speed and heavy-haul railways. It has been widely applied in practical railway engineering. Dr. Wanming Zhai is a Chair Professor of Railway Engineering at Southwest Jiaotong University, where he is also chairman of the Academic Committee and Director of the Train and Track Research Institute. He is a member of the Chinese Academy of Sciences and one of the leading scientists in railway system dynamics. Professor Zhai is Editor-in-Chief of both the International Journal of Rail Transportation, published by Taylor & Francis Group, and the Journal of Modern Transportation, published by Springer. In addition, he is a trustee of the International Association for Vehicle System Dynamics, Vice President of the Chinese Society of Theoretical and Applied Mechanics, and Vice President of the Chinese Society for Vibration Engineering. /div
Download or read book Report No FRA ORD D written by United States. Federal Railroad Administration. Office of Research, Development, and Demonstrations and published by . This book was released on 1977 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Railway Track Engineering written by J. S. Mundrey and published by Tata McGraw-Hill Education. This book was released on 2009-10-29 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Railway Track Engineering presents conventional methods of track construction, maintenance and monitoring, along with modern sophisticated track machines. It also comprehensively covers design details and specifications of important track componentsChanges in the revised edition include:Explanation of the hitherto little understood phenomenon of rolling contact fatigue in rails and practical steps to deal with it. New technology of alumino-thermic rail welding. New guidelines for ultrasonic rail flaw detection. Ballastless track for metros, mainlines and washable aprons. Track standards for ultra high-speed lines in India. Track structure for Dedicated Freight Corridors. Technology of fully mechanized track construction with the deployment of simple track laying equipment to highly sophisticated track-laying trains.Richly illustrated with photographs and line drawings, this book will be useful to professionals and students.
Download or read book Tribocorrosion written by Anna Igual Munoz and published by Springer Nature. This book was released on 2020-06-16 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a toolbox for identifying and addressing tribocorrosion situations from an engineering point of view. It is an accessible and introductory guideline to the emerging and interdisciplinary field of tribocorrosion covering the main concepts of tribology and corrosion. It describes specific tribocorrosion concepts, models and experimental techniques as well as their application to practical situations in which mechanical and chemical phenomena act simultaneously.
Download or read book Nanolubricants written by Jean Michel Martin and published by John Wiley & Sons. This book was released on 2008-04-30 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: The technology involved in lubrication by nanoparticles is a rapidly developing scientific area and one that has been watched with interest for the past ten years. Nanolubrication offers a solution to many problems associated with traditional lubricants that contain sulphur and phosphorus; and though for some time the production of nanoparticles was restricted by the technologies available, today synthesis methods have been improved to such a level that it is possible to produce large quantities relatively cheaply and efficiently. Nanolubricants develops a new concept of lubrication, based on these nanoparticles, and along with the authors’ own research it synthesises the information available on the topic of nanolubrication from existing literature and presents it in a concise form. Describes the many advantages and potential applications of nanotechnology in the tribological field. Offers a full review of the state-of-the-art as well as much original research that is yet unpublished. Includes sections on boundary lubrication by colloïdal systems, nanolubricants made of metal dichalcogenides, carbon-based nanolubricants, overbased detergent salts, nanolubricants made of metals and boron-based solid nanolubricants and lubrication additives. Authored by highly regarded experts in the field with contributions from leading international academics. Nanolubricants will appeal to postgraduate students, academics and researchers in mechanical engineering, chemical engineering and materials science. It should also be of interest to practising engineers with petroleum companies and mechanical manufacturers.
Download or read book Japanese Railway Engineering written by and published by . This book was released on 1993 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Friction at the Atomic Level written by Motohisa Hirano and published by John Wiley & Sons. This book was released on 2018-02-27 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by one of the most distinguished scientists and a pioneer in this field, this monograph represents a stand-alone, concise guide to friction at the atomic level. It brings together hitherto widely-scattered information in one single source, and is the first to explain the nature of friction in terms of atomistic mechanisms. In addition to his detailed description on modeling and simulation, the author stresses experimental approaches like AFM (Atomic Force Microscope) techniques for verification of theory. In this respect the book will benefit the whole nanotribology community, from graduate students who want to get the basics right up to researchers specializing in mechanical engineering, materials science, physics and chemistry.
Download or read book Tribochemistry written by Gerqard Heinicke and published by Oxford University Press, USA. This book was released on 1988-05-12 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides a comprehensive introduction to the scientific and technical aspects of tribochemistry, a field concerned with the chemical reactions initiated by mechanical energy. The relevant theoretical background, recent innovations and results, and the possibilities of expanding industrial applications are covered.
Download or read book Engine Tribology written by C.M. Taylor and published by Elsevier. This book was released on 1993-07-23 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: Customer expectations and international competition are obliging car and commercial vehicle manufacturers to produce more efficient and cleaner products in shorter product cycle times. The consideration of Engine Tribology has a leading role to play in helping to achieve these goals. Specific areas of interdisciplinary interest include: design influences on fuel economy and emissions; new materials (ceramics, steels, coatings, lubricants, additives); low viscosity lubricants; and low heat rejection (adiabatic) engines.This volume gives a detailed and current review on some basic features of tribology particularly associated with internal combustion engines such as: lubrication analysis relevant to plain bearings, Hertzian contact theory and elastohydrodynamic lubrication associated with cams and followers and friction and wear in a general context. Several chapters examine engine bearings, valve trains, (cams and followers) and piston assemblies. For each machine element a background introduction is followed by design interpretations and a consideration of future developments. The important topic of materials, solids and lubricants is focused upon in the concluding chapters.The work will be of interest to engineers and researchers in the automobile, automotive products, petroleum and associated industries.
Download or read book INNOTRACK concluding technical report innovative track systems written by Anders Ekberg and published by . This book was released on 2010 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: The track structure, rails, switches and crossings account for more than 50% of maintenance and renewal costs for the rail industry. To improve the competitiveness of rail transportation, the cost-efficiency of these areas needs to be addressed. This is the background to INNOTRACK, an integrated research project funded by the European Commission's 6th research framework programme. Running from September 2006 to December 2009, INNOTRACK has developed a multitude of innovative solutions in the areas of track substructure, rails & welds, and switches & crossings. The solutions have been assessed from technical, logistics and life cycle cost point of views.
Download or read book Biotribology written by J. Paulo Davim and published by John Wiley & Sons. This book was released on 2013-03-04 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tribology is the “science and technology of interacting surfaces in relative motion” and encompasses the study of friction, wear and lubrication. By extension biotribology is usually defined as the tribological phenomena occurring in either the human body or in animals. Therefore, it is possible to consider tribological processes that may occur after implantation of an artificial device in the human body and the tribological processes naturally occurring in or on the tissues and organ of animals. Animals, including humans, possess a wide variety of sliding and frictional interfaces. The authors aim to provide some advances in research in biotribology. They cover several aspects of biotribology such as tribology of synovial joints and artificial replacements; wear of screws and plates in bone fractures repair; wear of denture and restorative materials; friction of the skin and comfort of clothing; wear of replacement heart valves; tribology of contact lenses and ocular tribology; biotribology on the microscale and nanoscale levels, etc. This book can be used as a research text for final undergraduate engineering courses (for example, materials, biomedical, etc.) or for those studying the subject of biotribology at the postgraduate level. It can also serve as a useful reference for academics, biomechanical researchers, biologists, chemists, physicists, biomedicals and materials engineers, and other professionals in related engineering, medicine and biomedical industries.
Download or read book Test Train Program written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tribology Design written by Mark Hadfield and published by WIT Press. This book was released on 2010 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Tribology and Design Conference explores the role of technology and design in the broader sense. It brings together colleagues from different disciplines interested in problems of surface interaction and design. The applications covered range from geomechanics to nano problems and from sustainability issues to advanced materials. It has never been so important for the designer to consider product and system durability in relation to reliability and sustainability issues. The topics for discussion also cover studies of tribology in nature and how the resulting lessons can be applied by the designers. Another important theme is the application of tribology in biomechanics, a field in which surface mechanics in general is of fundamental importance. This book contains the papers presented at the Third International Conference, arranged into the following subject areas: Design Tools; Test Methods; Surface Engineering; Tribology under Extreme Conditions; Surface Measurements & Lubrication.
