The Life Of Cracks
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The Life Of Cracks
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Author : Srečko Glodež
language : en
Publisher: Cambridge Scholars Publishing
Release Date : 2020-07-13
The Life Of Cracks written by Srečko Glodež and has been published by Cambridge Scholars Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-07-13 with Technology & Engineering categories.
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.
Fatigue Damage Crack Growth And Life Prediction
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Author : F. Ellyin
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Fatigue Damage Crack Growth And Life Prediction written by F. Ellyin and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
Fatigue failure is a multi-stage process. It begins with the initiation of cracks, and with continued cyclic loading the cracks propagate, finally leading to the rupture of a component or specimen. The demarcation between the above stages is not well-defined. Depending upon the scale of interest, the variation may span three orders of magnitude. For example, to a material scientist an initiated crack may be of the order of a micron, whereas for an engineer it can be of the order of a millimetre. It is not surprising therefore to see that investigation of the fatigue process has followed different paths depending upon the scale of phenomenon under investigation. Interest in the study of fatigue failure increased with the advent of industrial ization. Because of the urgent need to design against fatigue failure, early investiga tors focused on prototype testing and proposed failure criteria similar to design formulae. Thus, a methodology developed whereby the fatigue theories were proposed based on experimental observations, albeit at times with limited scope. This type of phenomenological approach progressed rapidly during the past four decades as closed-loop testing machines became available.
The Life Of Cracks
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Author : Srečko Glodež
language : en
Publisher:
Release Date : 2020-09
The Life Of Cracks written by Srečko Glodež and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-09 with categories.
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.
Cracks And Fracture
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Author : K. Bertram Broberg
language : en
Publisher: Elsevier
Release Date : 1999-02-24
Cracks And Fracture written by K. Bertram Broberg and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-02-24 with Technology & Engineering categories.
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
Light Through The Cracks
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Author : Joanna Watson
language : en
Publisher: Sarah Grace Publishing
Release Date : 2021-10-06
Light Through The Cracks written by Joanna Watson and has been published by Sarah Grace Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-10-06 with categories.
Cancer disappearing without trace. A premature baby confounding the medical predictions about his prognosis. A teenager seeing her long-term debilitating illness vanish in an instant. A church receiving cash out of thin air, ensuring it survives the threat of closure. A man defying death, multiple times, following life-threatening injuries sustained in a head-on road collision. Light through the Cracks contains ten true stories, united by a common theme: All of them feature ordinary people encountering God, in extraordinary ways, in the toughest of life's circumstances. Starting with her own dramatic story of the car accident that could have left her dead or paralysed, Joanna Watson writes authentically and compellingly of how God breaks in when life turns tough. Each story raises faith, builds hope, and encourages readers to look for God's Light through the cracks in their own challenging situations.
Cracks
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Author : Sheila Kohler
language : en
Publisher: Open Road Media
Release Date : 2023-02-21
Cracks written by Sheila Kohler and has been published by Open Road Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-02-21 with Fiction categories.
An “eerie, elliptical masterpiece set in a South African boarding school in the early 1960s. . . . First-rate psychological suspense . . . played out flawlessly” (Kirkus Reviews). The members of an elite girls swim team are the reigning queens at their South African boarding school. And then Italian student Fiamma Coronna joins their ranks. Beautiful, athletic, and suddenly commanding all the coach’s attention, Fiamma is the envy of every girl on the team—until the summer she walks into the rural grasslands surrounding the school and disappears. Forty years later, the former teammates return to the school for a reunion, and the memory of that summer emerges like a long buried secret, the shocking, violent truth of what really happened to Fiamma no longer able to be contained . . . “Riveting . . . while evocative of The Prime of Miss Jean Brodie and Picnic at Hanging Rock, Kohler’s writing is so smoothly confident and erotic that she has produced a tale resonant with a chilling power all its own.” —Elle “A stunning and singular tale of the passion and tribalism of adolescence, Cracks lays bare the violence that lurks in the heart of even the most innocent. Shocking, reminiscent of Lord of the Flies . . . conjures up the wildness of the veld and the passion and drama of adolescence . . . peculiarly satisfying.” —The Times Literary Supplement “A disturbing, note-perfect novel. Dissection of evil has rarely been so extravagantly executed.” —San Francisco Chronicle “Polished, compact and chilling . . . Powerful.” —Publishers Weekly A Library Journal and Newsday Best Book of the Year, now a major motion picture starring Eva Green
Fracture Mechanics And Crack Growth
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Author : Naman Recho
language : en
Publisher: John Wiley & Sons
Release Date : 2012-12-27
Fracture Mechanics And Crack Growth written by Naman Recho and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-27 with Technology & Engineering categories.
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.
Small Fatigue Cracks Mechanics Mechanisms And Applications
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Author : K.S. Ravichandran
language : en
Publisher: Elsevier
Release Date : 1999-09-30
Small Fatigue Cracks Mechanics Mechanisms And Applications written by K.S. Ravichandran and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-09-30 with Technology & Engineering categories.
This book contains the fully peer-reviewed papers presented at the Third Engineering Foundation Conference on Small Fatigue Cracks, held under the chairmanship of K.S. Ravichandran and Y. Murakami during December 6-11, 1998, at the Turtle Bay Hilton, Oahu, Hawaii. This book presents a state-of-the-art description of the mechanics, mechanisms and applications of small fatigue cracks by most of the world's leading experts in this field. Topics ranging from the mechanisms of crack initiation, small crack behavior in metallic, intermetallic, ceramic and composite materials, experimental measurement, mechanistic and theoretical models, to the role of small cracks in fretting fatigue and the application of small crack results to the aging aircraft and high-cycle fatigue problems, are covered.
Mathematical And Computational Analyses Of Cracking Formation
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Author : Yoichi Sumi
language : en
Publisher: Springer
Release Date : 2014-06-11
Mathematical And Computational Analyses Of Cracking Formation written by Yoichi Sumi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-11 with Science categories.
This book is about the pattern formation and the evolution of crack propagation in engineering materials and structures, bridging mathematical analyses of cracks based on singular integral equations, to computational simulation of engineering design. The first two parts of this book focus on elasticity and fracture and provide the basis for discussions on fracture morphology and its numerical simulation, which may lead to a simulation-based fracture control in engineering structures. Several design concepts are discussed for the prevention of fatigue and fracture in engineering structures, including safe-life design, fail-safe design, damage tolerant design. After starting with basic elasticity and fracture theories in parts one and two, this book focuses on the fracture morphology that develops due to the propagation of brittle cracks or fatigue cracks. In part three, the mathematical analysis of a curved crack is precisely described, based on the perturbation method. The stability theory of interactive cracks propagating in brittle solids may help readers to understand the formation of a fractal-like cracking patterns in brittle solids, while the stability theory of crack paths helps to identify the straight versus sharply curved or sometimes wavy crack paths observed in brittle solids. In part four, the numerical simulation method of a system of multiple cracks is introduced by means of the finite element method, which may be used for the better implementation of fracture control in engineering structures. This book is part of a series on “Mathematics for Industry” and will appeal to structural engineers seeking to understand the basic backgrounds of analyses, but also to mathematicians with an interest in how such mathematical solutions are evaluated in industrial applications.
Methods Of Analysis And Solutions Of Crack Problems
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Author : George C. Sih
language : en
Publisher: Springer Science & Business Media
Release Date : 1973-01-31
Methods Of Analysis And Solutions Of Crack Problems written by George C. Sih and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973-01-31 with Science categories.
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.