Author: Satryo SoemantriPublisher:
ISBN:
Category :
Languages : en
Pages : 274
Book Description
The Mechanism of Two and Three Body Abrasive Wear in Ductile Metals
Author: Satryo SoemantriTribology of Natural Fiber Polymer Composites
Author: Publisher: Elsevier
ISBN: 1845695054
Category : Technology & Engineering
Languages : en
Pages : 218
Book Description
Environmental concerns are driving demand for bio-degradable materials such as plant-based natural fiber reinforced polymer composites. These composites are fast replacing conventional materials in many applications, especially in automobiles, where tribology (friction, lubrication and wear) is important. This book covers the availability and processing of natural fiber polymer composites and their structural, thermal, mechanical and, in particular, tribological properties. Chapter 1 discusses sources of natural fibers, their extraction and surface modification. It also reviews the thermal, structural, mechanical, spectroscopic and morphological properties of unmodified and chemically modified natural fibers such as sisal, jute, wood, bamboo and cotton together with their potential applications. Chapter 2 gives a brief introduction to the tribology of polymer composites and the role of fiber reinforcement and fillers in modifying their tribological properties. Further chapters discuss the chemical composition, physical structure, mechanical properties and tribological behaviour of polymer composites reinforced with sisal, jute, cotton and bamboo fibers. The tribological behaviour of wood polymer composites (WPCs) is also discussed. Tribology of natural fibre polymer composites is a useful reference guide for engineers, scientific and technical personnel involved in the development of natural fiber composites. In particular it will give an insight into mechanical properties and failure mechanisms in situations where wear, lubrication and friction are a problem. Examines the availability and processing of natural fiber composites and their structural, thermal, mechanical and tribological properties Explores sources of natural fibers, their extraction and surface modification as well as properties of chemically modified natural fibers Provides an overview of the tribology of polymer composites and the role of fiber reinforcement and filters in modifying tribological composites
Developments in High Temperature Corrosion and Protection of Materials
Author: W GaoPublisher: Elsevier
ISBN: 1845694252
Category : Technology & Engineering
Languages : en
Pages : 677
Book Description
High temperature corrosion is a phenomenon that occurs in components that operate at very high temperatures, such as gas turbines, jet engines and industrial plants. Engineers are constantly striving to understand and prevent this type of corrosion. This book examines the latest developments in the understanding of high temperature corrosion processes and protective oxide scales and coatings. Part one looks at high temperature corrosion. Chapters cover diffusion and solid state reactions, external and internal oxidation of alloys, metal dusting corrosion, tribological degradation, hot corrosion, and oxide scales on hot-rolled steel strips. Modern techniques for analysing high temperature oxidation and corrosion are also discussed. Part two discusses methods of protection using ceramics, composites, protective oxide scales and coatings. Chapters focus on layered ternary ceramics, alumina scales, Ti-Al intermetallic compounds, metal matrix composites, chemical vapour deposited silicon carbide, nanocrystalline coatings and thermal barrier coatings. Part three provides case studies illustrating some of the challenges of high temperature corrosion to industry and how they can be overcome. Case studies include the petrochemical industry, modern incinerators and oxidation processing of electronic materials. This book is a valuable reference tool for engineers who develop heat resistant materials, mechanical engineers who design and maintain high temperature equipment and plant, and research scientists and students who study high temperature corrosion and protection of materials. Describes the latest developments in understanding high temperature corrosion Presents the latest research by the leading innovators from around the globe Case studies are provided to illustrate key points
Wear of Metals
Author: A. D. SarkarPublisher: Elsevier
ISBN: 1483140105
Category : Technology & Engineering
Languages : en
Pages : 181
Book Description
Wear of Metals deals with the mechanisms underlying the wear of metals such as brass, cast iron, and aluminum-silicon alloys. Topics covered include surface topography, contact of solids, and friction, along with the effect of sliding and rolling resistance. Fretting, wear under rolling contact, and the friction and wear of polymers are also discussed. Comprised of 27 chapters, this volume begins with an overview of adhesion, types of wear, and friction and wear experiments. The following chapters explore surface topography and the contact (single and multiple) of solids; molecular theory of friction and wear; running-in wear and abrasive wear; and surface contaminants. An oxidational hypothesis of wear is then presented, and the phenomenology of metal transfer involving steel on brass and steel on steel is described. The remaining chapters consider sliding in surfaces and subsurfaces; the effect of temperature and speed on friction and wear; the role of solubility and crystal structure in friction and wear; and wear of brass. The two principal effects associated with rolling, namely, the slip or creep and energy loss, are also examined. Examples of tribological components are given. This book should be of value to undergraduates and research workers in the fields of metallurgy and engineering.
A Study of Abrasive Wear
Author: Ambrish MisraA Coupled Thermo-mechanical Analysis of Two-body Abrasion
Author: Sanjeev Anand TorviPublisher:
ISBN:
Category :
Languages : en
Pages : 144
Book Description
Two-body abrasion is a type of wear mechanism, in which the surfaces of two bodies with same or different geometries interact by sliding against each other. This sliding leads to the formation of a groove which may include material removal. Two-body abrasion also leads to generation of frictional heating along with plastic deformation. Frictional heating and material loss due to abrasive wear considerations are vital for applications such as farming equipment, automotive braking systems, hard drives, electrical switches and more. Although considerable amount of work has been carried out previously to study two-body abrasion, the majority of the studies [1-3] were purely mechanical and did not include thermal effects. In this work, a fully coupled thermo-mechanical analysis of two-body abrasion is carried out using the finite element software package ABAQUS. Numerical simulation of wear is performed by considering a three-dimensional (3-D) model of a rigid sphere indenting and sliding against an elastic-plastic rectangular work piece made of AISI 1045 steel. Johnson-Cook material model [4] is used to incorporate the effects of temperature and strain rate. Arbitrary Lagrangian Eulerian (ALE) adaptive meshing is used for reducing excessive mesh distortion and thereby improving the accuracy of the results. The results of the finite element model developed are validated with those obtained by Abdelali et al. [5]. Following this, numerical simulations are executed for primarily two cases. The first case includes the effect of temperature on the field variables whereas, the second case ignores thermal softening. Detailed study of the effect of various other parameters such as indenter size, indentation depth and sliding speed is earned out for both the cases. On comparing these two cases, it is observed that inclusion of temperature has a pronounced effect on the results. The difference in the equivalent plastic strain between the two cases is nearly 50% and the von Mises stress is observed to differ by nearly 30%. These differences suggest that it is essential to include the effect of temperature in the numerical studies of two-body abrasion. The residual stress for the thermo-mechanical analysis is compared with the stresses obtained in the pure mechanical analysis and a difference in the stresses is observed in both the cases.
Tribology of Abrasive Machining Processes
Author: Ioan D. MarinescuPublisher: William Andrew
ISBN: 1437734677
Category : Technology & Engineering
Languages : en
Pages : 602
Book Description
This book draws upon the science of tribology to understand, predict and improve abrasive machining processes. Pulling together information on how abrasives work, the authors, who are renowned experts in abrasive technology, demonstrate how tribology can be applied as a tool to improve abrasive machining processes. Each of the main elements of the abrasive machining system are looked at, and the tribological factors that control the efficiency and quality of the processes are described. Since grinding is by far the most commonly employed abrasive machining process, it is dealt with in particular detail. Solutions are posed to many of the most commonly experienced industrial problems, such as poor accuracy, poor surface quality, rapid wheel wear, vibrations, work-piece burn and high process costs. This practical approach makes this book an essential tool for practicing engineers. Uses the science of tribology to improve understanding and of abrasive machining processes in order to increase performance, productivity and surface quality of final products A comprehensive reference on how abrasives work, covering kinematics, heat transfer, thermal stresses, molecular dynamics, fluids and the tribology of lubricants Authoritative and ground-breaking in its first edition, the 2nd edition includes 30% new and updated material, including new topics such as CMP (Chemical Mechanical Polishing) and precision machining for micro-and nano-scale applications
The Third Body Concept: Interpretation of Tribological Phenomena
Author: C.M. TaylorPublisher: Elsevier
ISBN: 0080875955
Category : Technology & Engineering
Languages : en
Pages : 779
Book Description
The central theme of this book, The Third Body Concept: Interpretation of Tribological Phenomena, was chosen to honour the work of Professor Maurice Godet. The aim of this and previous conferences in the series is to select a topic of current interest to tribologists in order to further advance knowledge in selected fields. Presented by leading scientists from 23 countries, these proceedings provide an up-to-date review of developments in this field..
Introduction to Surface Engineering
Author: P. A. DearnleyPublisher: Cambridge University Press
ISBN: 1316785084
Category : Technology & Engineering
Languages : en
Pages : 798
Book Description
This highly illustrated reference work covers the three principal types of surface technologies that best protect engineering devices and products: diffusion technologies, deposition technologies, and other less commonly acknowledged surface engineering (SE) techniques. Various applications are noted throughout the text and additionally whole chapters are devoted to specific SE applications across the automotive, gas turbine engine (GTE), metal machining, and biomedical implant sectors. Along with the benefits of SE, this volume also critically examines SE's limitations. Materials degradation pathways - those which can and those which cannot be mitigated by SE - are rigorously explained. Written from a scientific, materials engineering perspective, this concise text is supported by high-quality images and photo-micrographs which show how surfaces can be engineered to overcome the limits of conventionally produced materials, even in complex or hostile operating environments. This book is a useful resource for undergraduate and postgraduate students as well as professional engineers.
Friction and Wear in Metals
Author: Riyadh A. Al-SamaraiPublisher: Springer Nature
ISBN: 9819711681
Category :
Languages : en
Pages : 343
Book Description