January 27, 2021

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Fracture and Fatigue in Wood

Fracture and Fatigue in Wood
Author : Ian Smith,Eric Landis,Meng Gong
Publisher : John Wiley & Sons
Release Date : 2003-06-02
Category : Technology & Engineering
Total pages :242
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Damage in wood is principally the result of fatigue. Fatigue is the process of progressive localised irreversible change in a material, and may culminate in cracks or complete fracture if conditions that initiated or propagated the process persist. Comprehensive understanding of fatigue and fracture in engineered wood components must be founded on a proper understanding of the damage processes. Although wood is the world's most widely used structural material, whether measured by volume consumed or value of finished construction, its behaviour is not well understood even by people who have spent their careers studying it. * What is known about failure processes comes almost entirely from empirical evidence collected for engineering purposes. * Hypotheses about behaviour of wood are based on macroscopic observation of specimens during and following tests. * With only limited resources and the need to obtain practical results quickly, the timber engineering research community has steered away from the scientific approach. * Forestry practices are changing and are known to influence characteristics of wood cells therefore there is a need to periodically reassess the mechanical properties of visually graded lumber the blackbox approach. Fatigue and Fracture of Wood examines the above issues from a scientific point of view by drawing on the authors' own research as well as previously published material. Unlike the empirical research, the book begins by examining growth of wood. It briefly examines its structure in relation to how trees grow, before assessing the fatigue and fracture of wood and discussing the scientific methods of modelling fatigue. * Covers from macro to micro behaviour of wood * Presents direct evidence of how wood fractures using Scanning Electron Microscopy * The first book to present a physically correct model for fracture in wood * Provides experimental proof of so-called memory in wood (i.e. dependence of fatigue behaviour on the loading sequence) * Givse practical illustrations of how theories and models can be applied in practice An essential resource for wood scientists/engineers, timber-engineering practitioners, and graduate students studying wood and solid mechanics.

The Mechanics of Fracture and Fatigue

The Mechanics of Fracture and Fatigue
Author : A. P. Parker
Publisher : Spon Press
Release Date : 1981
Category : Fracture mechanics
Total pages :167
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Fatigue and Fracture

Fatigue and Fracture
Author : F. C. Campbell
Publisher : ASM International
Release Date : 2012
Category : Technology & Engineering
Total pages :685
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"This book emphasizes the physical and practical aspects of fatigue and fracture. It covers mechanical properties of materials, differences between ductile and brittle fractures, fracture mechanics, the basics of fatigue, structural joints, high temperature failures, wear, environmentally-induced failures, and steps in the failure analysis process."--publishers website.

Fracture and Fatigue, Volume 7

Fracture and Fatigue, Volume 7
Author : Carroll Jay
Publisher : Springer Science & Business Media
Release Date : 2013-08-23
Category : Technology & Engineering
Total pages :96
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Fracture and Fatigue, Volume 7: Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics, the seventh volume of eight from the Conference, brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on a wide range of areas, including: Microstructural Effects in Fatigue & Fracture Fracture of Interfaces Fracture of Composites and Interface Cracks Fatigue & Fracture: Environmental & Loading Effects Fracture & Digital Image Correlation

Fracture and Fatigue

Fracture and Fatigue
Author : J. C. Radon
Publisher : Elsevier
Release Date : 2017-01-31
Category : Technology & Engineering
Total pages :498
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Fracture and Fatigue: Elasto-Plasticity, Thin Sheet and Micromechanisms Problems covers the proceedings of the Third Colloquium on Fracture. The book discusses the development and applications of fracture mechanics. The contents of the text are organized according to the areas of concerns. The first part deals with elasto-plastic fracture mechanics, which includes topics such as fracture mechanics in the elastic-plastic regime and sizing of the geometry dependence and significance of maximum load toughness values. Part II covers the micromechanisms of fracture, which includes the aspects of crack growth under monotonic loading and the effect of secondary hardening on the fracture toughness of a bainitic microstructure. Part III concerns itself with thin sheet fracture mechanics, which includes R-curves evaluation for center-cracked panels and use of the R-curve for design with contained yield. The book will be of great interest to researchers and professionals whose work involves fracture mechanics.

Teaching and Education in Fracture and Fatigue

Teaching and Education in Fracture and Fatigue
Author : H.P. Rossmanith
Publisher : CRC Press
Release Date : 2003-09-02
Category : Architecture
Total pages :370
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This proceedings contains the best contributions to the series of seminars held in Vienna (1992), Miskolc, Hungary (1993 and 1994) and Vienna (1995) and provides a valuable resource for those concerned with the teaching of fracture and fatigue. It presents a wide range of approaches relevant to course and curriculum development. It is aimed particularly at those concerned with graduate and post-graduate education.

Fracture and Fatigue of Welded Joints and Structures

Fracture and Fatigue of Welded Joints and Structures
Author : K Macdonald
Publisher : Elsevier
Release Date : 2011-04-19
Category : Technology & Engineering
Total pages :360
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The failure of any welded joint is at best inconvenient and at worst can lead to catastrophic accidents. Fracture and fatigue of welded joints and structures analyses the processes and causes of fracture and fatigue, focusing on how the failure of welded joints and structures can be predicted and minimised in the design process. Part one concentrates on analysing fracture of welded joints and structures, with chapters on constraint-based fracture mechanics for predicting joint failure, fracture assessment methods and the use of fracture mechanics in the fatigue analysis of welded joints. In part two, the emphasis shifts to fatigue, and chapters focus on a variety of aspects of fatigue analysis including assessment of local stresses in welded joints, fatigue design rules for welded structures, k-nodes for offshore structures and modelling residual stresses in predicting the service life of structures. With its distinguished editor and international team of contributors, Fracture and fatigue of welded joints and structures is an essential reference for mechanical, structural and welding engineers, as well as those in the academic sector with a research interest in the field. Analyses the processes and causes of fracture and fatigue, focusing predicting and minimising the failure of welded joints in the design process Assesses the fracture of welded joints and structure featuring constraint-based fracture mechanics for predicting joint failure Explores specific considerations in fatigue analysis including the assessment of local stresses in welded joints and fatigue design rules for welded structures

Automated Test Methods for Fracture and Fatigue Crack Growth

Automated Test Methods for Fracture and Fatigue Crack Growth
Author : W. H. Cullen,Ronald W. Landgraf,L. R. Kaisand,John H. Underwood
Publisher : ASTM International
Release Date : 1985
Category : Technology & Engineering
Total pages :310
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The Welding Engineer’s Guide to Fracture and Fatigue

The Welding Engineer’s Guide to Fracture and Fatigue
Author : Philippa L Moore,Geoff Booth
Publisher : Elsevier
Release Date : 2014-11-21
Category : Technology & Engineering
Total pages :224
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The Welding Engineer's Guide to Fracture and Fatigue provides an essential introduction to fracture and fatigue and the assessment of these failure modes, through to the level of knowledge that would be expected of a qualified welding engineer. Part one covers the basic principles of weld fracture and fatigue. It begins with a review of the design of engineered structures, provides descriptions of typical welding defects and how these defects behave in structures undergoing static and cyclical loading, and explains the range of failure modes. Part two then explains how to detect and assess defects using fitness for service assessment procedures. Throughout, the book assumes no prior knowledge and explains concepts from first principles. Covers the basic principles of weld fracture and fatigue. Reviews the design of engineered structures, provides descriptions of typical welding defects and how these defects behave in structures undergoing static and cyclical loading, and explains the range of failure modes. Explains how to detect and assess defects using fitness for service assessment procedures.

Problems of Fracture Mechanics and Fatigue

Problems of Fracture Mechanics and Fatigue
Author : E.E. Gdoutos,C.A. Rodopoulos,J.R. Yates
Publisher : Springer Science & Business Media
Release Date : 2013-06-29
Category : Science
Total pages :618
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On Fracture Mechanics A major objective of engineering design is the determination of the geometry and dimensions of machine or structural elements and the selection of material in such a way that the elements perform their operating function in an efficient, safe and economic manner. For this reason the results of stress analysis are coupled with an appropriate failure criterion. Traditional failure criteria based on maximum stress, strain or energy density cannot adequately explain many structural failures that occurred at stress levels considerably lower than the ultimate strength of the material. On the other hand, experiments performed by Griffith in 1921 on glass fibers led to the conclusion that the strength of real materials is much smaller, typically by two orders of magnitude, than the theoretical strength. The discipline of fracture mechanics has been created in an effort to explain these phenomena. It is based on the realistic assumption that all materials contain crack-like defects from which failure initiates. Defects can exist in a material due to its composition, as second-phase particles, debonds in composites, etc. , they can be introduced into a structure during fabrication, as welds, or can be created during the service life of a component like fatigue, environment-assisted or creep cracks. Fracture mechanics studies the loading-bearing capacity of structures in the presence of initial defects. A dominant crack is usually assumed to exist.

Fracture and Fatigue Control in Structures

Fracture and Fatigue Control in Structures
Author : John M. Barsom,Stanley Theodore Rolfe
Publisher : Prentice Hall
Release Date : 1987
Category : Technology & Engineering
Total pages :628
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Emphasizes applications of fracture mechanics to prevent fracture and fatigue failures in structures, rather than the theoretical aspects of fracture mechanics. The concepts of driving force and resistance force are used to differentiate between the mathematical side and the materials side. Case studies of actual failures are new to the third edition. Annotation copyrighted by Book News, Inc., Portland, OR

Fracture and Fatigue

Fracture and Fatigue
Author : Lawrence J. Broutman
Publisher : Elsevier
Release Date : 2016-06-15
Category : Technology & Engineering
Total pages :484
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Composite Materials, Volume 5: Fracture and Fatigue covers the concepts, theories, and experiments on fracture and fatigue behavior of composite materials. The book discusses the fracture of particulate composites, including metal, polymer, and ceramic matrices; relates micromechanics effects to composite strength; and summarizes the various theories relating constituent properties and microstructure to fracture. The text also describes differing theories regarding the strength and fracture of composites; and the theory and experiment relating to time-dependent fracture covering both long-term as well as dynamic fracture. The fatigue of both polymer- and metal-matrix composites and the factors influencing the toughness of both brittle and ductile matrix composites are also considered. Design engineers, materials scientist, materials engineers, and metallurgists will find the book useful.

Defects, Fracture and Fatigue

Defects, Fracture and Fatigue
Author : G. Sih,James W. Provan
Publisher : Springer
Release Date : 1983-02-05
Category : Science
Total pages :489
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Micromechanisms of Fracture and Fatigue

Micromechanisms of Fracture and Fatigue
Author : Jaroslav Pokluda,Pavel Šandera
Publisher : Springer Science & Business Media
Release Date : 2010-05-27
Category : Technology & Engineering
Total pages :293
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Micromechanisms of Fracture and Fatigue forms the culmination of 20 years of research in the field of fatigue and fracture. It discusses a range of topics and comments on the state of the art for each. The first part is devoted to models of deformation and fracture of perfect crystals. Using various atomistic methods, the theoretical strength of solids under simple and complex loading is calculated for a wide range of elements and compounds, and compared with experimental data. The connection between the onset of local plasticity in nanoindentation tests and the ideal shear strength is analysed using a multi-scale approach. Moreover, the nature of intrinsic brittleness or ductility of perfect crystal lattices is demonstrated by the coupling of atomistic and mesoscopic approaches, and compared with brittle/ductile behaviour of engineering materials. The second part addresses extrinsic sources of fracture toughness of engineering materials, related to their microstructure and microstructurally-induced crack tortuosity. Micromechanisms of ductile fracture are also described, in relation to the fracture strain of materials. Results of multilevel modelling, including statistical aspects of microstructure, are used to explain remarkable phenomena discovered in experiments. In the third part of the book, basic micromechanisms of fatigue cracks propagation under uniaxial and multiaxial loading are discussed on the basis of the unified mesoscopic model of crack tip shielding and closure, taking both microstructure and statistical effects into account. Applications to failure analysis are also outlined, and an attempt is made to distinguish intrinsic and extrinsic sources of materials resistance to fracture. Micromechanisms of Fracture and Fatigue provides scientists, researchers and postgraduate students with not only a deep insight into basic micromechanisms of fracture behaviour of materials, but also a number of engineering applications.

The Strength, Fracture, and Fatigue of Materials

The Strength, Fracture, and Fatigue of Materials
Author : Takeo Yokobori
Publisher : Unknown
Release Date : 1965
Category : Elasticity
Total pages :372
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