Failures of many mechanical components in service result from fatigue. The cracks which grow may either originate from some pre-existing macroscopic defect, or, if the component is of high integrity but highly stressed, a region of localized stress concentration. In turn, such concentrators may be caused by some minute defect, such as a tiny inclusion, or inadvertent machining damage. Another source of surface damage which may exist between notionally 'bonded' components is associated with minute relative motion along the interface, brought about usually be cyclic tangential loading. Such fretting damage is quite insidious, and may lead to many kinds of problems such as wear, but it is its influence on the promotion of embryo cracks with which we are concerned here. When the presence of fretting is associated with decreased fatigue performance the effect is known as fretting fatigue. Fretting fatigue is a subject drawing equally on materials science and applied mechanics, but it is the intention in this book to concentrate attention entirely on the latter aspects, in a search for the quantification of the influence of fretting on both crack nucleation and propagation. There have been very few previous texts in this area, and the present volume seeks to cover five principal areas; (a) The modelling of contact problems including partial slip under tangentialloading, which produces the surface damage. (b) The modelling of short cracks by rigorous methods which deal effectively with steep stress gradients, kinking and closure. (c) The experimental simulation of fretting fatigue.

The main objectives of the Ccmnunity's energy policy consist of securing a sufficient energy supply for the present and future demand of its Member States and in reducing the Community's dependence on imported energy through the more rational use of energy and a broader diversifi cation of supply. This requires a full set of common efforts at all levels, including energy research and development. In the framework of its strategy for scientific and technological research the Commission of the European Ccmnunities has launched several R & D progranunes in the field of energy. Theses progranunes are: inplemented either directly in its Joint Research Centre or by concluding contracts with research institutions in the EC Member countries. One of the most inportant short and medil.UR term objectives of the present four-year Energy R & D Progranune (1979 - 1983) approved by the Council of Ministers on 13 September 1979 aims at fostering energy conservation technologies in the three main energy consl.Uning sectors: danestic, industry and transport. In the European Carmunity more than 35% of the energy is conslB'IIed in industry. About 23% of the inported oil is used in this sector. Two thirds of this energy are used for heating purposes. Consequently, there is a high potential for residuary heat recovery. In order to enhance rational use of energy and energy conservation in the Member States of the Ccmnunity, it is necessary, anong other things, to promote the development of combustion and energy recovery techniques."

Sustainable Manufacturing Processes provides best practice advice on sustainable manufacturing methods, with examples from industry as well as important supporting theory. In the current manufacturing industry, processes and materials are developed with close reference to sustainability issues, with an outward look to optimum production efficiency and reduced environmental impact. Important topics such as the use of renewable energy, reduction of material waste and recycling, reduction in energy and water consumption, and reduction in emissions are all discussed, along with broad coverage of deformation and joining technologies, computational techniques, and computer-aided engineering. In addition, a wide range of traditional and innovative manufacturing technologies are covered, including friction stir welding, incremental forming, abrasive water jet machining, laser beam machining, sustainable foundry, porous material fabrication by powder metallurgy, laser and additive manufacturing, and thermoelectric and thermomagnetic energy harvesting.

Proceedings of the Contractors' Meetings held in Brussels, May 10, June 17, October 1, 7, 22, 1982

This volume describes the design of relay-based circuit systems from device fabrication to circuit micro-architectures. This book is ideal for both device engineers as well as circuit system designers, and highlights the importance of co-design across design hierarchies when trying to optimize system performance (in this case, energy-efficiency). The book will also appeal to researchers and engineers focused on semiconductor, integrated circuits, and energy efficient electronics.

Roelof A. A. Oldeman Tropical hardwoods are one of the essential cogs in the complex socio-economic machinery keeping alive an ever-increasing humanity with steadily rising claims upon a finite-resource environment. Their position in this context at first sight seems to be analogous to that of other commodities, such as rubber, metals, mineral oil, tropical fruits and many more. Looking closer, however, tropical hardwoods occupy a special place. Their vast majority, unlike tropical crops, still comes forth from natural forests being exploited by man. This exploitation straight from the natural resource is something they have in common with oil and metals, but the fact that they grow in living systems places them closer to crops. Natural forest ecosystems are not renewable. Timber producing trees, however, can be made into a renewable resource on condition that ways and means are found to cultivate them as a crop. be understood as a socio-economic The tropical hardwood situation can best chain, with the resource base at one end, the consumer community at the other and everything that has to do with the market in the middle. Now, at the resource side, the economics of tropical hardwood extraction barely got out of the primeval ways of wood-gathering by hand and by axe, which were still predominant in the nineteen-forties. There, the offer of natural products was so immense and so near to hand that no care had to be taken of the resource.

Proceedings of the Contractors' Meetings held in Brussels on October 21, 28, 1982

The advent of low temperature superconductors in the early 1960's converted what had been a laboratory curiosity with very limited possibilities to a prac tical means of fabricating electrical components and devices with lossless con ductors. Using liquid helium as a coolant, the successful construction and operation of high field strength magnet systems, alternators, motors and trans mission lines was announced. These developments ushered in the era of what may be termed cryogenic power engineering and a decade later successful oper ating systems could be found such as the 5 T saddle magnet designed and built in the United States by the Argonne National Laboratory and installed on an experimental power generating facility at the High Temperature Institute in Moscow, Russia. The field of digital computers provided an incentive of a quite different kind to operate at cryogenic temperatures. In this case, the objective was to ob tain higher switching speeds than are possible at ambient temperatures with the critical issue being the operating characteristics of semiconductor switches under cryogenic conditions. By 1980, cryogenic electronics was established as another branch of electric engineering."

Proceedings of the Contractors' Meetings held in Brussels, December 14-15, 1981, May 6-7, September 24, 28 and 30 and October 21, 1982

This book provides an introduction to energy economics. It shows how to apply general economic theory as well as empirical and advanced econometric methods to explain the drivers of energy markets and their development. Readers learn about the specific properties of energy markets as well as the physical, technological, environmental, and geopolitical particularities of energy sources and products. The book covers all types of energy markets, ranging from liquid fuels, gaseous fuels, and solid fuels to electricity. It also addresses emission allowances, energy efficiency, and nuclear risks. The authors discuss the engineering properties of energy technologies including renewables, the economics of natural resources and environmental protection, market liberalization, and energy trade as well as the experience of the German energy transformation. This book will serve students as a textbook and practitioners as a reference for their understanding of energy markets and their development.

This book should be of interest to electrical system protection engineers and postgraduate students.

This book discusses energy transfer, fluid flow and pollution in built environments. It provides a comprehensive overview of the highly detailed fundamental theories as well as the technologies used and the application of heat and mass transfer and fluid flow in built environments, with a focus on the mathematical models and computational and experimental methods. It is a valuable resource for researchers in the fields of buildings and environment, heat transfer and global warming.

This book is aimed at providing a comprehensive overview of recent developments in sustainability science and engineering. The book focuses on principles and practices and presents 18 interwoven chapters on four major themes: design for sustainability; sustainability metrics and analysis; sustainable energy; and sustainable supply/value. Significant, state-of-the-art work, methodologies, practices and plans are presented by researchers, technology developers and industry leaders. Topics discussed include: life cycle assessment; product end-of-life options; practical approaches to sustainability; environmental footprint assessment; biofuels; and sustainable supply chain management.

We are very pleased to be asked to co-author this book for a variety of reasons, one of which was that it gave us further opportunity to work together. The scope proposed was very wide with the only significant proviso being that the book should be in a mongraph-style and not a teaching text. This require ment has given us the opportunity to compile a wide range of relevant material relating to present-day knowledge and application in power system reliability. As many readers will be aware, we have collaborated in many ways over a relatively long period and have co-authored two other books on reliability evaluation. Both of these previous books were structured as teaching texts. This present book is not a discourse on "how to do reliability evaluation" but a discussion on "why it should be done and what can be done and achieved" and as such does not replace or conflict with the previous books. The three books are complementary and each enhances the others. The material contained in this book is not specifically original since it is based on information which we have published in other forms either jointly or as co authors with various other people, particularly our many research students. We sincerely acknowledge the important contributions made by all these students and colleagues. There are too many to mention individually in this preface but their names appear frequently in the references at the end of each chapter."

China's rapid economic growth in the recent decades has produced an unprecedented energy vulnerability that could threaten the sustainability of its economic development, a linchpin to social stability and ultimately the regime legitimacy of the Chinese Communist Party (CCP) as well as the foundation for China's rising power aspirations. What is the Chinese perception of the energy security and challenges, how has the Chinese government responded to the challenges? What are the international implications of China's search for energy security? This collection of contributions by leading scholars seeks answers to these extremely important questions. The book is divided into three parts. Part I presents an overview of China's sense of energy security and its strategic responses. Part II examines China's energy policy-making processes, the efforts to reform and reorganize the energy sector and reset policy priorities Part III focuses on the international implications of China's search for energy security. This book consists of articles published in the Journal of Contemporary China.

Water-Energy-Food Nexus Narratives and Resource Securities: A Global South Perspective provides a knowledge synthesis on the water-energy-food (WEF) nexus, focusing primarily on the global south. By presenting concepts, analytical tools, and case studies, the book serves as a practical resource for researchers, policymakers, and practitioners in sustainability and functional roles across all three sectors. It addresses key issues related to data availability, tools, indices, metrics, and application across multiple scales, beginning with a summary of existing knowledge. Finally, it examines the WEF nexus, presents global insights, and discusses future considerations and implications. This book presents an overview of existing knowledge on the WEF nexus and examines how such research aligns with emerging global WEF nexus perspectives, making it ideal for professionals, government entities, private industry, and the general public.

Proceedings of the EC Contractors' Meeting held in Athens, Greece, 11-13 November 1981

Proceedings of the EC Contractors' Meeting held in Cadarache, 26-28 October 1981

This l::: ook comes as part of a new series on Solar Energy R+D, includlng Biomass which is carried out by the Euro: pean Community.. The commission of the European Comrmmities' Directorate General (XII) for Science, Research and Developnent is currently implementing, on a cost-sharing basis, a solar energy R+D pro;Jranune through contracts with European industry, research institutions and uni versi ties. This prcgrarrrrne includes a very strong acti vi ty on Biomass. Besides general R+D work on all aspects of Biomass growth and utilization which is reported elsewhere in this series, the Canmission is currently starting a new activity on Pilot Plants based on the use of Biomass for energy purp: Jses, and in particular on methanol prcx: luction from wood. The commission considers that the subject of methanol prcxiuction from wood offers llnp: Jrtant prospects for application wi thin the European Canmilllity and in other parts of the world, in particular some of the developing countries & The state of art in Europe In this field is still considered to be very high as a result of related work which was performed in Europe during vorld War II and the time before.

Topics on CO2 sequestration and reduction in greenhouse gas emissions from process engineering and materials for clean energy are covered. Papers addressing sustainable technologies in extractive metallurgy, materials processing and manufacturing industries with reduced energy consumption and CO2 emission are also included, as well as industrial energy efficient technologies including innovative ore beneficiation, smelting technologies, recycling and waste heat recovery. The book also carries contributions from all areas of non-nuclear and non-traditional energy sources, including renewable energy sources such as solar, wind, biomass, etc. The book also emphasizes novel mineral beneficiation, processing, and extraction techniques leading to waste minimization of critical rare-earth materials used in energy systems (e.g., magnets, display and lighting devices).

This book presents a 'critical reappraisal' of the resource curse thesis and extends the analysis to consider political and social dimensions, and thus, the importance of structure in the petroleum sector's governance model. It examines major challenges surrounding the governance of petroleum resources, and the implications for the economic growth and development of hydrocarbon-abundant countries as a result of ineffective economic, political, and social mechanisms. The book subsequently investigates a range of causal factors that may promote or hinder the effective management of oil and gas resources in the Kurdistan Region, which also has implications for the security of the wider region and for global energy security. The book also seeks to arrive at lessons learned and policy guidelines to help inform other new petroleum-exporting countries and regions about how to best manage their newfound wealth.