Download or read book Cracks and Fracture written by K. Bertram Broberg and published by Elsevier. This book was released on 1999-02-24 with total page 771 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cracks and Fracture consists of nine chapters in logical sequence. In two introductory chapters, physical processes in the vicinity of the crack edge are discussed and the fracture process is described. Chapter 3 develops general basic concepts and relations in crack mechanics, such as path independent integrals, stress intensity factors and energy flux into the crack edge region. Chapters 4-7 deal with elastostatic cracks, stationary or slowly moving elastic-plastic cracks, elastodynamic crack mechanics and elastoplastic aspects of fracture, including dynamic fracture mechanics. Appendices include general formulae, the basic theory of analytic functions, introduction to Laplace and Hankel transforms and description of certain basic relations, for instance for stress waves in solids. There is an extensive bibliography, containing references to both classical and recent work, and a comprehensive index. Presents an extensive bibliography containing references to both classical and recent works and a comprehensive index Appendices include general formulas, the basic theory of analytic functions, introduction to Laplace and Hankel transforms, and descriptions of certain basic relations, for instance for stress waves in solids
Download or read book Fitness for Service Fracture Assessment of Structures Containing Cracks written by Uwe Zerbst and published by Academic Press. This book was released on 2013-10-22 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of Fitness-for-Service Fracture Assessment of Structures Containing Cracks is to facilitate the use of fracture mechanics based failure assessment procedures for the evaluation and design of structures and components. All practical structures contain flaws and the optimum combination of cost efficiency and safety whilst achieving the required capability, can only be realised by using state of the art methods such as that represented by the European flaw assessment method SINTAP/FITNET to analyse the safety risk. This book is written by practitioners with extensive experience in both the development and use of integrity assessment methods and provides comprehensive information on the basic principles and use of analytical flaw assessment. It provides an introduction to the method, its background, how it can be applied, its potential and, importantly, its limitations. The explanations are complimented by using a large number of worked examples and validation exercises which illustrate all aspects of the procedure. In addition, for students and engineers who are new to the subject, a comprehensive glossary of basic terms used in fracture mechanics based integrity evaluations is included. The topics addressed include: Crack driving force (CDF) and failure assessment diagram (FAD) type analyses Preparation of the input parameters (crack dimensions, stress-strain properties, fracture toughness, statistical aspects) Determination of the model parameters, (stress intensity factor and yield load solutions) Treatment of combined primary and secondary loading, together with residual stress effects Analysis of the effect of constraint effects (treatment of small defects and section size effects) Treatment of mixed mode loading Consideration of the influences of strength mismatch Reliability aspects Comprehensive description of the use of structural integrity methods to optimise cost effectiveness and safety Detailed description of how to evaluate the integrity of structures containing cracks Valuable background information for understanding the methods, their potential and limitations Large number of worked examples, which demonstrate all aspects of the methods Descriptive, readable writing style Applicable to a wide range of interests, from the student (university or self study) to the expert who requires a 'state of the art' document
Download or read book Fracture Mechanics and Crack Growth written by Naman Recho and published by John Wiley & Sons. This book was released on 2012-12-27 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents recent advances related to the following two topics: how mechanical fields close to material or geometrical singularities such as cracks can be determined; how failure criteria can be established according to the singularity degrees related to these discontinuities. Concerning the determination of mechanical fields close to a crack tip, the first part of the book presents most of the traditional methods in order to classify them into two major categories. The first is based on the stress field, such as the Airy function, and the second resolves the problem from functions related to displacement fields. Following this, a new method based on the Hamiltonian system is presented in great detail. Local and energetic approaches to fracture are used in order to determine the fracture parameters such as stress intensity factor and energy release rate. The second part of the book describes methodologies to establish the critical fracture loads and the crack growth criteria. Singular fields for homogeneous and non-homogeneous problems near crack tips, v-notches, interfaces, etc. associated with the crack initiation and propagation laws in elastic and elastic-plastic media, allow us to determine the basis of failure criteria. Each phenomenon studied is dealt with according to its conceptual and theoretical modeling, to its use in the criteria of fracture resistance; and finally to its implementation in terms of feasibility and numerical application. Contents 1. Introduction. Part 1: Stress Field Analysis Close to the Crack Tip 2. Review of Continuum Mechanics and the Behavior Laws. 3. Overview of Fracture Mechanics. 4. Fracture Mechanics. 5. Introduction to the Finite Element Analysis of Cracked Structures. Part 2: Crack Growth Criteria 6. Crack Propagation. 7. Crack Growth Prediction in Elements of Steel Structures Submitted to Fatigue. 8. Potential Use of Crack Propagation Laws in Fatigue Life Design.
Download or read book Geologic Fracture Mechanics written by Richard A. Schultz and published by Cambridge University Press. This book was released on 2019-08-08 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to geologic fracture mechanics covering geologic structural discontinuities from theoretical and field-based perspectives.
Download or read book Appearance of cracks and fractures in metallic materials written by Verein Deutscher Eisenhüttenleute and published by . This book was released on 1983 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aus der Untersuchung von Brüchen lassen sich wesentliche Hinweise auf das Verhalten metallischer Werkstoffe ableiten. Daher hat die Untersuchung der Erscheinungsformen von Bruchflächen in großem Maße zur Lösung zahlreicher Probleme beigetragen, die das Werkstoffverhalten selbst, die aus den Werkstoffen gefertigten Bauteile und das Beurteilen von Schadensfällen betreffen. Zunächst war es nur möglich, das makroskopische Bruchaussehen zur Beurteilung heranzuziehen. Die Einführung des Rasterelektronenmikroskops mit seinem hohen Auflösungsvermögen und seiner großen Schärfentiefe hat dann Möglichkeiten eröffnet, aus dem mikrofraktographischen Bild weitere Hinweise auf den Bruchablauf und den jeweiligen Bruchmechanismus zu gewinnen. Dies hat dazu geführt, dass zahlreiche Untersuchungsergebnisse veröffentlicht worden sind, die sich mit dem Bruchverhalten und dem Bruchaussehen beschäftigen.
Download or read book Crack Control written by Kevin Kendall and published by Elsevier. This book was released on 2020-10-22 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crack Control: Using Fracture Theory to Create Tough New Materials goes beyond just trying to understand the origin of cracks and fracture in materials by also providing readers with the knowledge and techniques required to stop cracks at the nano- and micro-levels, covering the fundamentals of crack propagation, prevention, and healing. The book starts by providing a concise foundational overview of cracks and fracture mechanics, then looks at real-life ways that new tougher materials have been developed via crack inhibition. Topics such as crack equilibrium, stress criterion, and stress equations are then outlined, as are methods for inventing new crack-resistant materials. The importance of crack healing is emphasized and cracks that grow under tension, bending, compression, crazing, and adhesion are discussed at length as well Provides a better understanding of crack formation in various materials allowing for more efficient investigations of crack-based material or structural failure Demonstrates how to prevent cracks by arresting them at the nano- and micro-levels Looks at methods for developing new tougher and stronger materials through crack inhibition Emphasizes the importance of crack healing and explains crack stopping through changing the peel shape in various ways
Download or read book Stochastic Crack Propagation written by Giora Maymon and published by Academic Press. This book was released on 2018-01-02 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stochastic Crack Propagation: Essential Practical Aspects describes a feature important to the analysis of stochastic crack propagation, starting with essential background theory. Processes, or phenomena, which are of practical importance in the work of design engineers or R&D teams are described chapter by chapter. Many examples are described and supported by listed references, and files of data that can be used with specialist software to practice design situations are included. Advice on how to use various computer programs to design and predict for stochastic crack growth is also provided, giving professionals a complete guide. Presents instructions and exercises in the ideal format for professionals, focusing on applications Explains a methodology on how to optimize the engineering design process by including stochastic crack growth behavior Provides computational files to help readers get up-to-speed with design using programs like ANSYS and NASTRAN for stochastic crack growth
Download or read book Problems of mixed mode crack propagation written by E.E. Gdoutos and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is not just another book on fracture mechanics. In recent years, there have been many books published on this subject in an attempt to assess the state of the art and its applications. The majority of the work dealt with energy release rate or critical stress intensity factor and is applicable only to fracture toughness testing. The main reason for this restriction is that the energy release concept cannot easily be extended to mixed mode fracture that occurs in practice as the rule rather than the exception. Cracks will normally curve or turn because the direction of loading can change as a function of time. Their directions of growth cannot be assumed as an a priori and must be determined from a pre-assumed criterion. Analysts are still perplexed with selecting an appropriate fracture criterion because it requires much discernment and judgement. Criteria which often appeared valid for idealized situations are quickly dis credited when encountering more complex physical phenomena. Moreover, the claim of generality cannot be justified on the basis of agreement between theory and experiment for a few simple examples.
Download or read book Methods of Analysis and Solutions of Crack Problems written by George C. Sih and published by Springer Science & Business Media. This book was released on 1973-01-31 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is weH known that the traditional failure criteria cannot adequately explain failures which occur at a nominal stress level considerably lower than the ultimate strength of the material. The current procedure for predicting the safe loads or safe useful life of a structural member has been evolved around the discipline oflinear fracture mechanics. This approach introduces the concept of a crack extension force which can be used to rank materials in some order of fracture resistance. The idea is to determine the largest crack that a material will tolerate without failure. Laboratory methods for characterizing the fracture toughness of many engineering materials are now available. While these test data are useful for providing some rough guidance in the choice of materials, it is not clear how they could be used in the design of a structure. The understanding of the relationship between laboratory tests and fracture design of structures is, to say the least, deficient. Fracture mechanics is presently at astandstill until the basic problems of scaling from laboratory models to fuH size structures and mixed mode crack propagation are resolved. The answers to these questions require some basic understanding ofthe theory and will not be found by testing more specimens. The current theory of fracture is inadequate for many reasons. First of aH it can only treat idealized problems where the applied load must be directed normal to the crack plane.
Download or read book Fracture of Brittle Solids written by Brian R. Lawn and published by Cambridge University Press. This book was released on 1993-06-03 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a monograph on the brittle fracture of ceramic materials, in a unified continuum, microstructural and atomistic treatment.
Download or read book Cracks and Fracture written by and published by ASTM International. This book was released on 1976 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Life of Cracks written by Srečko Glodež and published by Cambridge Scholars Publishing. This book was released on 2020-07-13 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many people find the concept of fracture and damage mechanics to be somewhat problematic, mainly because, until recently, close attention in mechanics was focused especially on the strength and resistance of materials. In this sense, to speak of fracture is as uncomfortable for some as it is to speak of a deadly disease. In confronting and preventing a fatal disease, one must understand its complexity, symptoms, and behavior; by the same token, in securing the strength of an engineering structure, one must understand the reasons and type of its potential failure. This book will provide knowledge and insights on this matter to its readers.
Download or read book Traumatic Dental Injuries written by Jens O. Andreasen and published by John Wiley & Sons. This book was released on 2011-10-07 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRAUMATIC DENTAL INJURIES: A MANUAL The third edition of Traumatic Dental Injuries: A Manual builds on the widespread success of the previous two editions. The ultimate guide to dental trauma, the manual preserves its uniquely usable and reader-friendly format, demonstrating step-by-step treatment protocols for commonly occurring traumatic injuries. Several new sections have been added to expand the number of clinical scenarios, describing soft tissue injuries associated with dental trauma, showing how decoronation of ankylosed anterior teeth in adolescents can preserve the alveolar process for later implant placement, and identifying predictors for pulpal and periodontal ligament healing complications as well as for tooth loss. A unique feature of the new edition is the accompanying DVD which presents computer animations of all trauma scenarios, as well as links to the internet-based interactive Dental Trauma Guide to predict healing complications for individual trauma scenarios. KEY FEATURES Written by international authorities on dental trauma Demonstrates treatment protocols in a clear step-by-step format Illustrated throughout with high-quality color images and diagrams Includes more sections to expand number of clinical scenarios Accompanied by a new DVD of trauma scenario animations REVIEWS OF PREVIOUS EDITIONS The text is clear and well written and well referenced ... The chapters on diagnosis of periodontal and pulpal complications are particularly helpful as this is a difficult area for many clinicians. The manual will serve as an excellent reference for practitioners and dental students who have a good working knowledge of dental traumatology. Journal of Orthodontics Overall, this book is excellent and I believe would be an essential member of a dentist’s library. It is the sort of book that can be quickly read, and information and guidance can be located easily when the need arises. The price makes the book very affordable and I wholeheartedly recommend it as an essential reference source for the general dentist and dental student. Australian Endodontic Journal BY THE SAME AUTHORS Textbook and Color Atlas of Traumatic Injuries to the Teeth Fourth Edition Edited by J.O. Andreasen, F.M. Andreasen and L. Andersson ISBN 9781405129541 Oral and Maxillofacial Surgery Edited by L. Andersson, K.E. Kahnberg and M.A. Pogrel ISBN 9781405171199 DVD animations can be found by entering the ISBN at Booksupport.wiley.com
Download or read book Fracture Mechanics written by Chin-Teh Sun and published by Academic Press. This book was released on 2011-10-14 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: From a leading expert in fracture mechanics, this text provides new approaches and new applications to advance the understanding of crack formation and propagation.
Download or read book Mechanics of Fracture Initiation and Propagation written by George C. Sih and published by Springer. This book was released on 1991-04-30 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: The assessment of crack initiation and/or propagation has been the subject of many past discussions on fracture mechanics. Depending on how the chosen failure criterion is combined with the solution of a particular theory of continuum mechanics, the outcome could vary over a wide range. Mod elling of the material damage process could be elusive if the scale level of observation is left undefined. The specification of physical dimension alone is not sufficient because time and temperature also play an intimate role. It is only when the latter two variables are fixed that failure predictions can be simplified. The sudden fracture of material with a pre-existing crack is a case in point. Barring changes in the local temperature,* the energy released to create a unit surface area of an existing crack can be obtained by considering the change in elastic energy of the system before and after crack extension. Such a quantity has been referred to as the critical energy release rate, G e, or stress intensity factor, K Ie. Other parameters, such as the crack opening displacement (COD), path-independent J-integral, etc. , have been proposed; their relation to the fracture process is also based on the energy release concept. These one-parameter approaches, however, are unable simultaneously to account for the failure process of crack initiation, propagation and onset of rapid fracture. A review on the use of G, K I, COD, J, etc. , has been made by Sih [1,2].
Download or read book Disorder and Fracture written by J.C. Charmet and published by Springer Science & Business Media. This book was released on 1990 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sixteen papers (lectures) from the June 1989 Institute are grouped in sections covering tools, diffusion-limited aggregation model, statistical models of fracture, rheology and fracture, and materials and applications. The papers range from theoretical concepts to practical applications. Each section has a brief introduction which summarizes the links between different papers. Annotation copyrighted by Book News, Inc., Portland, OR
Download or read book Fracture of Materials Under Compression Along Cracks written by Aleksander N. Guz and published by Springer Nature. This book was released on 2020-07-25 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the problems of fracture mechanics of materials with cracks under the loading directed along the cracks. It considers two non-classical fracture mechanisms, namely the fracture of bodies compressed along cracks and the fracture of materials with initial (residual) stresses acting in parallel to the surfaces of cracks location, and presents new approaches (also including combined one) developed in the framework of three-dimensional linearized mechanics of deformable bodies. It then discusses the results of studies on two- and three-dimensional problems for various configurations of crack locations in isotropic and anisotropic materials, and based on these results, critically evaluates the accuracy and applicability limits of the “beam approximation” approach, which is widely used to study various problems of the fracture of bodies under compression along parallel cracks.
