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Fracture And Fatigue Of Welded Joints And Structures

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Fracture and Fatigue of Welded Joints and Structures

Fracture and Fatigue of Welded Joints and Structures Book
Author : K Macdonald
Publisher : Elsevier
Release : 2011-04-19
ISBN : 0857092502
Language : En, Es, Fr & De

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Book Description :

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

Fatigue of Welded Structures

Fatigue of Welded Structures Book
Author : T. R. Gurney
Publisher : CUP Archive
Release : 1979-12-20
ISBN : 9780521225588
Language : En, Es, Fr & De

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Book Description :

Download Fatigue of Welded Structures book written by T. R. Gurney, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Cumulative Damage of Welded Joints

Cumulative Damage of Welded Joints Book
Author : T R Gurney
Publisher : Woodhead Publishing
Release : 2006-08-25
ISBN : 1845691032
Language : En, Es, Fr & De

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Book Description :

Fatigue is a mechanism of failure which involves the formation and growth of cracks under the action of repeated stresses. Ultimately, a crack may propagate to such an extent that total fracture of the member may occur. To avoid fatigue it is essential to design the structure with inherent fatigue strength. However, fatigue strength for variable amplitude loading is not a constant material property and any calculations are necessarily built on a number of assumptions. Cumulative damage of welded joints explores the wealth of research in this important field and its implications for the design and manufacture of welded components. After an Introduction, chapter two introduces the constant amplitude database, which contains results obtained in test conditions and which forms the basis of the basic S-N curves for various types of joint. Chapter three discusses the influence of residual stresses which can have a marked effect on fatigue behaviour. Chapter four explores variable amplitude loading and the problem of how information from laboratory tests, obtained under constant amplitude conditions, can be applied to the design of structures for service conditions. This problem is further investigated in the next chapter which is devoted to two and three level load testing. Chapters six, seven and eight look at the influence that the variety of variable loading spectra can have on fatigue strength, whether narrow or wide band loading or cycles of small stress range. Taking all of this knowledge, chapter nine discusses structure designs. Cumulative damage of welded joints is a comprehensive source of invaluable information for welding engineers, supervisors, inspection personnel and designers. It will also be of great interest for academics working in the fields of structural and mechanical engineering. Covers the wealth of research in the field of fatigue strength and its role in the design and manufacture of welded components Invaluable reference source for welding engineers, supervisors, inspection personnel and designers

Fatigue Assessment of Welded Joints by Local Approaches

Fatigue Assessment of Welded Joints by Local Approaches Book
Author : Dieter Radaj,C M Sonsino,W Fricke
Publisher : Woodhead Publishing
Release : 2006-10-30
ISBN : 1845691881
Language : En, Es, Fr & De

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Book Description :

Local approaches to fatigue assessment are used to predict the structural durability of welded joints, to optimise their design and to evaluate unforeseen joint failures. This standard work provides a systematic survey of the principles and practical applications of the various methods. It covers the hot spot structural stress approach to fatigue in general, the notch stress and notch strain approach to crack initiation and the fracture mechanics approach to crack propagation. Seam-welded and spot-welded joints in structural steels and aluminium alloys are also considered. This completely reworked second edition takes into account the tremendous progress in understanding and applying local approaches which has been achieved in the last decade. It is a standard reference for designers, structural analysts and testing engineers who are responsible for the fatigue-resistant in-service behaviour of welded structures. Completely reworked second edition of a standard work providing a systematic survey of the principles and practical applications of the various methods Covers the hot spot structural stress approach to fatigue in general, the notch stress and notch strain approach to crack initiation and the fracture mechanics approach to crack propagation. Written by a distinguished team of authors

Fatigue Assessment of Welded Joints by Local Approaches

Fatigue Assessment of Welded Joints by Local Approaches Book
Author : Dieter Radaj,Cetin Morris Sonsino
Publisher : Woodhead Publishing
Release : 1998
ISBN : 9781855734036
Language : En, Es, Fr & De

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Book Description :

This book reviews the available knowledge on local approaches to fatigue assessment of welded joints, gathers the data necessary for their practical application and demonstrates the power of the local concept by way of demonstration examples from research and industry. It covers the hot spot structural stress approach to fatigue in general, the notch stress and notch strain approach to crack initiation and the fracture mechanics approach to crack propagation. Seam-welded and spot-welded joints in structural steels and aluminium alloys are considered. The book is intended for designers, structural analysts and testing engineers who are responsible for the fatigue-resistant in-service behaviour of welded structures. It should become a reference work for researchers in the field and should support activities directed to standardisation of local approaches.

The Welding Engineer s Guide to Fracture and Fatigue

The Welding Engineer   s Guide to Fracture and Fatigue Book
Author : Philippa L Moore,Geoff Booth
Publisher : Elsevier
Release : 2014-11-21
ISBN : 1782423915
Language : En, Es, Fr & De

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Book Description :

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.

Fatigue Design of Welded Joints and Components

Fatigue Design of Welded Joints and Components Book
Author : A Hobbacher
Publisher : Woodhead Publishing
Release : 1996-11-14
ISBN : 9781855733152
Language : En, Es, Fr & De

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Book Description :

These recommendations present general methods for the assessment of fatigue damage in welded components, which may affect the limit states of a structure, such as ultimate limit state and serviceability limited state. Fatigue resistance data is given for welded components made of wrought or extruded products of ferritic/pearlitic or banitic structural steels up to fy = 700 Mpa and of aluminium alloys commonly used for welded structures.

The Fatigue Strength of Transverse Fillet Welded Joints

The Fatigue Strength of Transverse Fillet Welded Joints Book
Author : T R Gurney
Publisher : Elsevier
Release : 1991-01-03
ISBN : 0857093258
Language : En, Es, Fr & De

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Book Description :

This report is the result of a major study on the influence of both main plate thickness and of attachment size on the fatigue strength of joints with transverse non-load-carrying fillet welds. In particular, it defines the extent to which the size of the attachment might influence the thickness effect in such joints. Through a whole range of different tests, the study confirms that the present thickness effect correction for certain types of joint is too severe.

Fatigue Analysis of Welded Components

Fatigue Analysis of Welded Components Book
Author : E. Niemi,W Fricke,S J Maddox
Publisher : Woodhead Publishing
Release : 2006-09-27
ISBN : 1845696662
Language : En, Es, Fr & De

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Book Description :

This report provides background and guidance on the use of the structural hot spot stress approach to the fatigue design of welded components and structures. It complements the IIW recommendations for 'Fatigue Design of Welded Joints and Components' and extends the information provided in the IIW recommendations on 'Stress Determination for Fatigue Analysis of Welded Components'. This approach is applicable to cases of potential fatigue cracking from the weld toe. It has been in use for many years in the context of tubular joints. The present report concentrates on its extension to structures fabricated from plates and non-tubular sections. Following an explanation of the structural hot spot stress, its definition and its relevance to fatigue, the authors describe methods for its determination. Stress determination from both finite element analysis and strain gauge measurements is considered. Parametric formulae for calculating stress increases due to misalignment and structural discontinuities are also presented. Special attention is paid to the use of finite element stress analysis and guidance is given on the choice of element type and size for use with either solid or shell elements. Design S-N curves for use with the structural hot spot stress are presented for a range of weld details. Finally, practical application of the recommendations is illustrated in two case studies involving the fatigue assessment of welded structures using the structural hot spot stress approach. Provides practical guidance on the application of the structural hot-spot stress approach Discusses stress determination from both finite element analysis and strain gauge measurements Practical application of the recommendations is illustrated in two case studies

Fatigue Strength of Welded Structures

Fatigue Strength of Welded Structures Book
Author : S J Maddox
Publisher : Woodhead Publishing
Release : 2014-03-14
ISBN : 1845698797
Language : En, Es, Fr & De

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Book Description :

The key to avoidance of fatigue, which is the main cause of service failures, is good design. In the case of welded joints, which are particularly susceptible to fatigue, design rules are available. However, their effective use requires a good understanding of fatigue and an appreciation of problems concerned with their practical application. Fatigue strength of welded structures has incorporates up-to-date design rules with high academic standards whilst still achieving a practical approach to the subject. The book presents design recommendations which are based largely on those contained in recent British standards and explains how they are applied in practice. Attention is also focused on the relevant aspects of fatigue in welded joints which are not yet incorporated in codes thus providing a comprehensive aid for engineers concerned with the design or assessment of welded components or structures. Background information is given on the fatigue lives of welded joints which will enable the engineer or student to appreciate why there is such a contrast between welded and unwelded parts, why some welded joints perform better than others and how joints can be selected to optimise fatigue performance.

Recommendations for Fatigue Design of Welded Joints and Components

Recommendations for Fatigue Design of Welded Joints and Components Book
Author : A. F. Hobbacher
Publisher : Springer
Release : 2015-12-23
ISBN : 3319237578
Language : En, Es, Fr & De

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Book Description :

This book provides a basis for the design and analysis of welded components that are subjected to fluctuating forces, to avoid failure by fatigue. It is also a valuable resource for those on boards or commissions who are establishing fatigue design codes. For maximum benefit, readers should already have a working knowledge of the basics of fatigue and fracture mechanics. The purpose of designing a structure taking into consideration the limit state for fatigue damage is to ensure that the performance is satisfactory during the design life and that the survival probability is acceptable. The latter is achieved by the use of appropriate partial safety factors. This document has been prepared as the result of an initiative by Commissions XIII and XV of the International Institute of Welding (IIW).

Proceedings of 1st International Conference on Structural Damage Modelling and Assessment

Proceedings of 1st International Conference on Structural Damage Modelling and Assessment Book
Author : Magd Abdel Wahab
Publisher : Springer Nature
Release : 2020-12-12
ISBN : 9811591210
Language : En, Es, Fr & De

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Book Description :

This book comprises the select proceedings of Structural Damage Modelling and Assessment (SDMA 2020) presented online on 4–5 August 2020. It discusses the recent advances in fields related to damage modelling, damage detection and assessment, non-destructive testing and evaluation, structure integrity and structural health monitoring. The conference covers all research topics and applications relevant to structural damage modelling and assessment using theoretical, numerical and experimental techniques. This book is useful to scientists and engineers in academia and industry who are interested in the field of structural damage and integrity.

Fatigue Life Analyses of Welded Structures

Fatigue Life Analyses of Welded Structures Book
Author : Tom Lassen,Naman Récho
Publisher : John Wiley & Sons
Release : 2013-03-01
ISBN : 1118614704
Language : En, Es, Fr & De

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Book Description :

Avoiding or controlling fatigue damage is a major issue in thedesign and inspection of welded structures subjected to dynamicloading. Life predictions are usually used for safe life analysis,i.e. for verifying that it is very unlikely that fatigue damagewill occur during the target service life of a structure. Damagetolerance analysis is used for predicting the behavior of a fatiguecrack and for planning of in-service scheduled inspections. Itshould be a high probability that any cracks appearing are detectedand repaired before they become critical. In both safe lifeanalysis and the damage tolerance analysis there may be largeuncertainties involved that have to be treated in a logical andconsistent manner by stochastic modeling. This book focuses on fatigue life predictions and damage toleranceanalysis of welded joints and is divided into three parts. Thefirst part outlines the common practice used for safe life anddamage tolerance analysis with reference to rules and regulations.The second part emphasises stochastic modeling and decision-makingunder uncertainty, while the final part is devoted to recentadvances within fatigue research on welded joints. Industrialexamples that are included are mainly dealing with offshore steelstructures. Spreadsheets which accompany the book give the readerthe possibility for hands-on experience of fatigue lifepredictions, crack growth analysis and inspection planning. Assuch, these different areas will be of use to engineers andresearchers.

Minimization of Welding Distortion and Buckling

Minimization of Welding Distortion and Buckling Book
Author : Pan Michaleris
Publisher : Elsevier
Release : 2011-05-25
ISBN : 0857092901
Language : En, Es, Fr & De

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Book Description :

Welding is a cost-effective and flexible method of fabricating large structures, but drawbacks such as residual stress, distortion and buckling must be overcome in order to optimize structural performance. Minimization of welding distortion and buckling provides a systematic overview of the methods of minimizing distortion and buckling in welded structures. Following an introductory chapter, part one focuses on understanding welding stress and distortion, with chapters on such topics as computational welding mechanics, modelling the effect of phase transformations on welding stress and distortion and using computationally efficient reduced-solution methods to understand welding distortion. Part two covers different methods of minimizing welding distortion. Chapters discuss methods such as differential heating for minimizing distortion in welded stiffeners, dynamic thermal tensioning, reverse-side heating and ways of minimizing buckling such as weld cooling and hybrid laser arc welding. With its distinguished editor and international team of contributors, Minimization of welding distortion and buckling is an essential reference for all welders and engineers involved in fabrication of metal end-products, as well as those in industry and academia with a research interest in the area. Provides a systematic overview of the methods of minimizing distortion and buckling in welded structures Focuses on understanding welding stress and distortion featuring computational welding mechanics and modelling the effect of phase transformations Explores different methods of minimizing welding distortion discussing differential heating and dynamic thermal tensioning

Design Fabrication and Economy of Welded Structures

Design  Fabrication and Economy of Welded Structures Book
Author : K Jarmai,J Farkas
Publisher : Elsevier
Release : 2008-04-01
ISBN : 1782420487
Language : En, Es, Fr & De

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Book Description :

These proceedings cover the fields of different materials and fatigue of welded joints, thin-walled structures, tubular structures, frames, plates and shells and also incorporate special optimization problems, fire and earthquake resistant design, special applications and applied mechanics, and thus provide an important reference for civil and mechanical engineers, architects, designers and fabricators. Proceedings cover the fields of different materials and fatigue of welded joints, thin-walled structures, tubular structures, frames, plates and shells Also incorporate special optimization problems, fire and earthquake resistant design, special applications and applied mechanics Provide an important reference for civil and mechanical engineers, architects, designers and fabricators

Welded Joint Design

Welded Joint Design Book
Author : J Hicks
Publisher : Elsevier
Release : 1999-09-30
ISBN : 1855738988
Language : En, Es, Fr & De

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Book Description :

Based on the European Welding Engineer (EWF) syllabus Part 3 – Construction and Design, this book provides a clear, highly illustrated and concise explanation of how welded joints and structures are designed and of the constraints which welding may impose on the design. It is therefore of value both to the welding engineer and the design engineer Many engineers coming into the profession of welding engineering lack a background in design and construction of welded structures and plant. This book has been written with such engineers very much in mind. The safe performance of a structure relies on materials and methods of fabrication which can respond to the explicit or implicit design requirements. It is essential that the welding engineer has the opportunity of making his specialist input to the design process, and an understanding of the basis of the design will help that contribution to be most effective. It is also important that the practising design engineer acquires a basic knowledge of the relevant aspects of welding to be able to execute satisfactory designs and, equally important, to know when to seek the input of a qualified welding engineer. Designed for both students and practising engineers in welding and design, the book will also be of great value to civil, structural, mechanical and plant engineers. There is also much that will interest test houses, welding equipment and consumable manufacturers, classification societies and steel companies.

Welding and Joining of Aerospace Materials

Welding and Joining of Aerospace Materials Book
Author : M C Chaturvedi
Publisher : Elsevier
Release : 2011-12-19
ISBN : 0857095161
Language : En, Es, Fr & De

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Book Description :

Welding and joining techniques play an essential role in both the manufacture and in-service repair of aerospace structures and components, and these techniques become more advanced as new, complex materials are developed. Welding and joining of aerospace materials provides an in-depth review of different techniques for joining metallic and non-metallic aerospace materials. Part one opens with a chapter on recently developed welding techniques for aerospace materials. The next few chapters focus on different types of welding such as inertia friction, laser and hybrid laser-arc welding. The final chapter in part one discusses the important issue of heat affected zone cracking in welded superalloys. Part two covers other joining techniques, including chapters on riveting, composite-to-metal bonding, diffusion bonding and recent improvements in bonding metals. Part two concludes with a chapter focusing on the use of high-temperature brazing in aerospace engineering. Finally, an appendix to the book covers the important issue of linear friction welding. With its distinguished editor and international team of contributors, Welding and joining of aerospace materials is an essential reference for engineers and designers in the aerospace, materials and welding and joining industries, as well as companies and other organisations operating in these sectors and all those with an academic research interest in the subject. Provides an in-depth review of different techniques for joining metallic and non-metallic aerospace materials Discusses the important issue of heat affected zone cracking in welded superalloys Covers many joining techniques, including riveting, composite-to-metal bonding and diffusion bonding

A Fatigue Reliability Analysis of Welded Joints in Offshore Structures Using Probabilistic Fracture Mechanics Methods

A Fatigue Reliability Analysis of Welded Joints in Offshore Structures Using Probabilistic Fracture Mechanics Methods Book
Author : Victor Kanayo Nwegbu
Publisher : Unknown
Release : 1988
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download A Fatigue Reliability Analysis of Welded Joints in Offshore Structures Using Probabilistic Fracture Mechanics Methods book written by Victor Kanayo Nwegbu, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.