Download or read book Component Reliability under Creep Fatigue Conditions written by Janos Ginsztler and published by Springer. This book was released on 2014-05-04 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: Failure prevention, residual life assessment and life extension of materials in components operating at high temperatures are becoming increasingly important problems in the modern power plant industry. These problems are covered, and industrial examples will be introduced to illustrate the applications of those subjects covered using the results from service records.

Download or read book Component Assessment Data Requirements from Creep Fatigue Tests written by S. R. Holdsworth and published by . This book was released on 2011 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Typically, the lifetime assessment of high temperature components, for which both creep and fatigue are principal damage mechanisms, involves (1) the determination of the stress/strain state at critical locations and (2) a numerical evaluation of the consequential damage condition. Until recently, there has not been a standard procedure specifically covering creep-fatigue testing practices. Creep-fatigue tests had been performed for many years, but the reliability and the form of the information generated was dependent on the expertise and specific interests of individual test laboratories. This situation is now resolved by the publication of a new ASTM standard based on an Electrical Power Research Institute (EPRI) led initiative. The way in which the guidance contained in this new standard specifically aims to provide creep-fatigue data requirements for defect-free component assessment is examined. Cyclic/hold tests, usually involving a simple cycle shape representative of the service transients experienced by the target component, are particularly informative in the provision of data to indicate the concurrent influences of cyclic loading on creep deformation characteristics and creep deformation on cyclic plastic response. The crack initiation endurances of such tests also provide the basis of creep-fatigue damage summation representations for a given material. Sequential creep-fatigue testing can be used to quantify the effects of prior cyclic deformation on creep rupture or prior creep deformation on fatigue endurance. The use of such test methods is also considered.

Download or read book Creep Fatigue Behavior of Creep Strength Enhanced Ferritic Steels written by Jonathan Parker and published by . This book was released on 2011 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Creep Fatigue knowledge is necessary for meaningful reliability assessment of existing power generating plant because cyclic operation of an aging power plant fleet requires better understanding of factors affecting damage initiation and propagation, as well as technologies and methods to predict damage accumulation for individual components and overall safe/economic life. Utilities typically adopt operating practices which involve more severe cycles, either in terms of number or magnitude or both, so that there is, and will continue to be, a requirement to assess the creep fatigue performance of traditional boiler and turbine components. The recent installation of large numbers of combustion turbines and the associated heat recovery steam generators has significantly increased the number of materials and components which are operating under cyclic conditions at high temperatures. Indeed, the materials and component types susceptible to creep-fatigue is increasing since much of the new high efficiency coal plant will be operating with steam/metal temperatures much higher than those of traditional plant. Recent expert review has reemphasized that with most practical scenarios regarding future generation mix, fossil plant will continue to be important. Thus, there is the expectation that creep-fatigue damage will increase in occurrence, and affect an increased range of components. Different challenges will be faced since the new components will involve a greater range of alloys, methods of manufacture, and types of operation than conventional fossil generating stations. It is therefore apparent that operation under cyclic conditions at temperatures where creep can occur the potential for creep/fatigue damage is, and will continue to be, a matter of significant concern. The present paper considers specific challenges associated with creep/fatigue in creep strength enhanced ferritic steels such as Grade 91 and Grade 92.

Download or read book Creep and Fatigue in Polymer Matrix Composites written by Rui Miranda Guedes and published by Woodhead Publishing. This book was released on 2019-03-14 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: Creep and Fatigue in Polymer Matrix Composites, Second Edition, updates the latest research in modeling and predicting creep and fatigue in polymer matrix composites. The first part of the book reviews the modeling of viscoelastic and viscoplastic behavior as a way of predicting performance and service life. Final sections discuss techniques for modeling creep rupture and failure and how to test and predict long-term creep and fatigue in polymer matrix composites. Reviews the latest research in modeling and predicting creep and fatigue in polymer matrix composites Puts a specific focus on viscoelastic and viscoplastic modeling Features the time-temperature-age superposition principle for predicting long-term response Examines the creep rupture and damage interaction, with a particular focus on time-dependent failure criteria for the lifetime prediction of polymer matrix composite structures that are illustrated using experimental cases

Download or read book Analysis of ASME Boiler Pressure Vessel and Nuclear Components in the Creep Range written by Maan H. Jawad and published by John Wiley & Sons. This book was released on 2022-09-14 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis of ASME Boiler, Pressure Vessel, and Nuclear Components in the Creep Range Second Edition The latest edition of the leading resource on elevated temperature design In the newly revised Second Edition of Analysis of ASME Boiler, Pressure Vessel, and Nuclear Components in the Creep Range, a team of distinguished engineers delivers an authoritative introduction to the principles of design at elevated temperatures. The authors draw on over 50 years of experience, explaining the methodology for accomplishing a safe and economical design for boiler and pressure vessel components operating at high temperatures. The text includes extensive references, offering the reader the opportunity to further their understanding of the subject. In this latest edition, each chapter has been updated and two brand-new chapters added—the first is Creep Analysis Using the Remaining Life Method, and the second is Requirements for Nuclear Components. Numerous examples are included to illustrate the practical application of the presented design and analysis methods. It also offers: A thorough introduction to creep-fatigue analysis of pressure vessel components using the concept of load-controlled and strain-deformation controlled limits An introduction to the creep requirements in API 579/ASME FFS-1 “Remaining Life Method” A summary of creep-fatigue analysis requirements in nuclear components Detailed procedure for designing cylindrical and spherical components of boilers and pressure vessels due to axial and external pressure in the creep regime A section on using finite element analysis to approximate fatigue in structural members in tension and bending Perfect for mechanical engineers and researchers working in mechanical engineering, Analysis of ASME Boiler, Pressure Vessel, and Nuclear Components in the Creep Range will also earn a place in the libraries of graduate students studying mechanical engineering, technical staff in industry, and industry analysts and researchers.

Download or read book Creep and Fracture in High Temperature Components written by European Creep Collaborative Committee and published by DEStech Publications, Inc. This book was released on 2005 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides information from around the world on creep in multiple high-temperature metals, alloys, and advanced materials.

Download or read book Plasticity and Creep of Metals written by Andrew Rusinko and published by Springer Science & Business Media. This book was released on 2011-07-24 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book serves both as a textbook and a scientific work. As a textbook, the work gives a clear, thorough and systematic presentation of the fundamental postulates, theorems and principles and their applications of the classical mathematical theories of plasticity and creep. In addition to the mathematical theories, the physical theory of plasticity, the book presents the Budiansky concept of slip and its modification by M. Leonov. Special attention is given to the analysis of the advantages and shortcomings of the classical theories. In its main part, the book presents the synthetic theory of irreversible deformations, which is based on the mathematical Sanders flow plasticity theory and the physical theory, the Budiansky concept of slip. The main peculiarity of the synthetic theory is that the formulae for both plastic and creep deformation, as well their interrelations, can be derived from the single constitutive equation. Furthermore, the synthetic theory, as physical one, can take into account the real processes that take place in solids at irreversible deformation. This widens considerably the potential of the synthetic theory. In the framework of the synthetic theory such problems as creep delay, the Hazen-Kelly effect, the deformation at the break of the load trajectory, the influence of the rate of loading on the stress-strain diagram, creep at the changes of load, creep at unloading and reversed creep, have been analytically described. In the last chapter, the book shows the solution of some contemporary problems of plasticity and creep: Creep deformation at cyclic abrupt changes of temperature, The influence of irradiation on the plastic and creep deformation, Peculiarities of deformation at the phase transformation of some metals.

Download or read book Comprehensive Structural Integrity written by Ian Milne and published by Elsevier. This book was released on 2003-07-25 with total page 4647 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this major reference work is to provide a first point of entry to the literature for the researchers in any field relating to structural integrity in the form of a definitive research/reference tool which links the various sub-disciplines that comprise the whole of structural integrity. Special emphasis will be given to the interaction between mechanics and materials and structural integrity applications. Because of the interdisciplinary and applied nature of the work, it will be of interest to mechanical engineers and materials scientists from both academic and industrial backgrounds including bioengineering, interface engineering and nanotechnology. The scope of this work encompasses, but is not restricted to: fracture mechanics, fatigue, creep, materials, dynamics, environmental degradation, numerical methods, failure mechanisms and damage mechanics, interfacial fracture and nano-technology, structural analysis, surface behaviour and heart valves. The structures under consideration include: pressure vessels and piping, off-shore structures, gas installations and pipelines, chemical plants, aircraft, railways, bridges, plates and shells, electronic circuits, interfaces, nanotechnology, artificial organs, biomaterial prostheses, cast structures, mining... and more. Case studies will form an integral part of the work.

Download or read book Structural Integrity and Reliability in Electronics written by W.J. Plumbridge and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge itself is soon obsolete; It is a blunt instrument. Only by understanding can problems be solved and progress achieved. Reliability in performance of electronic equipment, in the face of demands for continuing miniaturisation and the anticipated abolition of lead containing solders, represents a major engineering challenge. The involvement of numerous disciplines; such as electrical, electronic, mechanical, manufacturing, and materials engineering together with physicists and computer specialists, adds to the complexity of the situation. Nevertheless, with electronics being the World's largest industrial sector, the potential rewards to the winners are substantial. This book aims to provide the ingredients for understanding, together with knowledge of reliability in interconnection technology and of the implementation of lead free solders. It is strongly contended that such a combination forms the necessary basis for greater structural integrity and enhanced performance The text is essentially in three parts: The intentions of the Part I component {The Materials Perspective, Chapters 1 6) are to present a snapshot of the current, but rapidly changing, global scene and to establish a firm understanding of the fundamentals surrounding interconnection performance. With potential readers possessing a broad spectrum of knowledge and expertise, this is essential. It could be argued that the reason for the limited progress made in this field to date has been due to the difficulties encountered in communicating effectively across the discipline boundaries.

Download or read book Encyclopedia of Tribology written by Q. Jane Wang and published by Springer. This book was released on 2013-09-26 with total page 4139 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRIBOLOGY – the study of friction, wear and lubrication – impacts almost every aspect of our daily lives. The Springer Encyclopedia of Tribology is an authoritative and comprehensive reference covering all major aspects of the science and engineering of tribology that are relevant to researchers across all engineering industries and related scientific disciplines. This is the first major reference that brings together the science, engineering and technological aspects of tribology of this breadth and scope in a single work. Developed and written by leading experts in the field, the Springer Encyclopedia of Tribology covers the fundamentals as well as advanced applications across material types, different length and time scales, and encompassing various engineering applications and technologies. Exciting new areas such as nanotribology, tribochemistry and biotribology have also been included. As a six-volume set, the Springer Encyclopedia of Tribology comprises 1630 entries written by authoritative experts in each subject area, under the guidance of an international panel of key researchers from academia, national laboratories and industry. With alphabetically-arranged entries, concept diagrams and cross-linking features, this comprehensive work provides easy access to essential information for both researchers and practicing engineers in the fields of engineering (aerospace, automotive, biomedical, chemical, electrical, and mechanical) as well as materials science, physics, and chemistry.

Download or read book Prediction of Crack Growth Under Creep Fatigue Loading Conditions written by KM. Nikbin and published by . This book was released on 1988 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crack growth data are presented on a brittle and a ductile low alloy steel and a nickel base superalloy which have been subjected to combined static and cyclic loading at elevated temperatures. The cyclic tests have been conducted between fixed load and fixed displacement ranges. Distinct regions of fatigue and creep dominated cracking have been identified. It is shown that crack growth eventually ceases because of load relaxation in the constant displacement amplitude tests. Fracture of a component made of the ductile steel is unlikely to occur under this type of low-cycle fatigue loading, but significant cracking is possible with the brittle steel. Where cyclic crack growth is creep controlled, it is shown that crack propagation rates can be predicted from static creep data using the creep fracture mechanics parameter C*.

Download or read book Proceedings Creep Fracture in High Temperature Components written by I. A. Shibli and published by DEStech Publications, Inc. This book was released on 2009 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt: A compendium of European and worldwide research investigating creep, fatigue and failure behaviors in metals under high-temperature and other service stresses. It helps set the standards for coordinating creep data and for maintaining defect-free quality in high-temperature metals and metal-based weldments.

Download or read book Fatigue Design of Components written by G. Marquis and published by Elsevier. This book was released on 1997-12-10 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains a selection of papers presented at Fatigue Design 95 held in Helsinki, Finland from 5-8 September 1995. The papers have been peer reviewed and present practical aspects for the design of components and structures to avoid fatigue failure. Topics covered include: fatigue design experiences, ground vehicle components, component reliability, multiaxial fatigue, notch analysis, service loading, welded structures, probabilistics aspects in fatigue, fatigue design optimization.

Download or read book Creep Fatigue Damage Under Multiaxial Conditions written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: When structural components are subjected to severe cyclic loading conditions with intermittent periods of sustained loading at elevated temperature, the designer must guard against a failure mode caused by the interaction of time-dependent and time-independent deformation. This phenomena is referred to as creep-fatigue interaction. The most elementary form of interaction theory (called linear damage summation) is now embodied in the ASME Boiler and Pressure Vessel Code. In recent years, a competitor for the linear damage summation theory has emerged, called strainrange partitioning. This procedure is based upon the visualization of the cyclic strain in a uniaxial creep-fatigue test as a hysteresis loop, with the inelastic strains in the loop counter-balanced in one of two ways. The two theories are compared and contrasted in terms of ease of use, possible inconsistencies, and component life prediction. Future work to further test the damage theories is recommended. (TFD).

Download or read book Advanced Lectures on Machine Learning written by Olivier Bousquet and published by Springer. This book was released on 2011-03-22 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Machine Learning has become a key enabling technology for many engineering applications, investigating scientific questions and theoretical problems alike. To stimulate discussions and to disseminate new results, a summer school series was started in February 2002, the documentation of which is published as LNAI 2600. This book presents revised lectures of two subsequent summer schools held in 2003 in Canberra, Australia, and in Tübingen, Germany. The tutorial lectures included are devoted to statistical learning theory, unsupervised learning, Bayesian inference, and applications in pattern recognition; they provide in-depth overviews of exciting new developments and contain a large number of references. Graduate students, lecturers, researchers and professionals alike will find this book a useful resource in learning and teaching machine learning.

Download or read book Superalloys 2012 written by Eric S. Huron and published by John Wiley & Sons. This book was released on 2012-10-02 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt: A superalloy, or high-performance alloy, is an alloy that exhibits excellent mechanical strength at high temperatures. Superalloy development has been driven primarily by the aerospace and power industries. This compilation of papers from the Twelfth International Symposium on Superalloys, held from September 9-13, 2012, offers the most recent technical information on this class of materials.

Download or read book Reliability Abstracts and Technical Reviews written by United States. National Aeronautics and Space Administration. Office of Reliability and Quality Assurance and published by . This book was released on 1967 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: