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Fatigue and Fracture Mechanics of Offshore Structures

Author : Linus Etube

Publisher :

Page : 200 pages

File Size : 24,38 MB

Release : 2001

Category : Technology & Engineering

ISBN :

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Book Description

Etube (mechanical engineering, University College London) presents novel research and the results of wave-induced stress on the operational life of offshore structures. Using the results of an investigation undertaken to assess the fatigue and fracture performance of steels used in the industry, the five chapters discuss details of the methodology to develop a typical jack-up offshore standard load history (JOSH); factors that influence fatigue resistance of structural steels used in the construction of jack-up structures; methods used to model the relevant factors for inclusion in JOSH, with emphasis on loading and structural response interaction; results and details of experimental variable amplitude corrosion fatigue tests conducted using JOSH; and a novel generalized methodology for fast assessment of offshore structural welded joints. Distributed by ASME. c. Book News Inc.



Fracture and Fatigue of Welded Joints and Structures

Author : K Macdonald

Publisher : Elsevier

Page : 353 pages

File Size : 17,13 MB

Release : 2011-04-19

Category : Technology & Engineering

ISBN : 0857092502

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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 and Fracture Mechanics of Offshore Structures

Author : Naveen Patniak

Publisher : Scitus Academics LLC

Page : 0 pages

File Size : 34,25 MB

Release : 2016

Category : Marine steel

ISBN : 9781681173719

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Book Description

The fatigue phenomenon process in structural elements and connections. The tubular welded joints used in the construction of offshore structures can experience millions of variable amplitude load cycles during their service life. Such fatigue loading represents a main cause of degradation in these structures. As a result, fatigue is an important consideration in their design. Fatigue and Fracture Mechanisms of Offshore Structures present novel research and the results of wave-induced stress on the operational life of offshore structures. Increasing oil consumption in the world and scarcity of land-oil resources due to political and economical reasons has caused offshore oil exploration and production to become a growing investigation field in the past six decades. The analysis of structures to use energy deposits and other recourses, or for other purposes, in ocean environments requires a special consideration since environmental and loading conditions offshore are very complicated and contain large uncertainties. Offshore structures are continuously subjected to random ocean waves producing stochastic loads that cause mainly fatigue failure in structural components.



Fatigue and Fracture Mechanics of High Risk Parts

Author : Bahram Farahmand

Publisher : Springer Science & Business Media

Page : 386 pages

File Size : 17,59 MB

Release : 2012-12-06

Category : Technology & Engineering

ISBN : 1461560098

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Book Description

In the preliminary stage of designing new structural hardware that must perform a given mission in a fluctuating load environment, there are several factors the designers should consider. Trade studies for different design configurations should be performed and, based on strength and weight considerations, among others, an optimum configuration selected. The selected design must be able to withstand the environment in question without failure. Therefore, a comprehen sive structural analysis that consists of static, dynamic, fatigue, and fracture is necessary to ensure the integrity of the structure. During the past few decades, fracture mechanics has become a necessary discipline for the solution of many structural problems. These problems include the prevention of failures resulting from preexisting cracks in the parent material, welds or that develop under cyclic loading environment during the life of the structure. The importance of fatigue and fracture in nuclear, pressure vessel, aircraft, and aerospace structural hardware cannot be overemphasized where safety is of utmost concern. This book is written for the designer and strength analyst, as well as for the material and process engineer who is concerned with the integrity of the structural hardware under load-varying environments in which fatigue and frac ture must be given special attention. The book is a result of years of both acade mic and industrial experiences that the principal author and co-authors have accumulated through their work with aircraft and aerospace structures.



Fatigue and Fracture Mechanics of Offshore Structures

Author : Linus S. Etube

Publisher :

Page : 164 pages

File Size : 31,99 MB

Release : 2001

Category :

ISBN : 9780470026731

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Book Description

Annotation The tubular welded joints used in the construction of offshore structures can experience millions of variable amplitude load cycles during their service life. Such fatigue loading represents a main cause of degradation in these structures. As a result, fatigue is an important consideration in their design. Fatigue and Fracture Mechanisms of Offshore Structures present novel research and the results of wave-induced stress on the operational life of offshore structures. Containing results of an investigation undertaken to assess the fatigue and fracture performance of steels used in the offshore industry, Fatigue and Fracture Mechanics of Offshore Structures includes, Stress analysis of tubular joints Fatigue design Fatigue loading in Jackup structures Jack-up dynamic response Modelling of wave loading Test specimen considerations The stress intensity factor concept Variable amplitude crack growth models Consideration of sequence effects Sea state probability model The important research in this book will be of interest to those dealing with a wide range of engineering structures - from bridges and buildings to masts and pipelines, as well as fatigue and fracture specialists, and those concerned with materials technology.



Fatigue and Fracture

Author : F. C. Campbell

Publisher : ASM International

Page : 699 pages

File Size : 49,69 MB

Release : 2012-01-01

Category : Technology & Engineering

ISBN : 1615039767

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Book Description

"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.



Fatigue Design of Marine Structures

Author : Inge Lotsberg

Publisher : Cambridge University Press

Page : 559 pages

File Size : 30,90 MB

Release : 2016-04-13

Category : Technology & Engineering

ISBN : 1316654176

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Book Description

Fatigue Design of Marine Structures provides students and professionals with a theoretical and practical background for fatigue design of marine structures including sailing ships, offshore structures for oil and gas production, and other welded structures subject to dynamic loading such as wind turbine structures. Industry expert Inge Lotsberg brings more than forty years of experience in design and standards-setting to this comprehensive guide to the basics of fatigue design of welded structures. Topics covered include laboratory testing, S-N data, different materials, different environments, stress concentrations, residual stresses, acceptance criteria, non-destructive testing, improvement methods, probability of failure, bolted connections, grouted connections, and fracture mechanics. Featuring twenty chapters, three hundred diagrams, forty-seven example calculations, and resources for further study, Fatigue Design of Marine Structures is intended as the complete reference work for study and practice.



Proceedings of the 17th International Conference on New Trends in Fatigue and Fracture

Author : Ricardo R. Ambriz

Publisher : Springer

Page : 361 pages

File Size : 39,85 MB

Release : 2017-11-17

Category : Technology & Engineering

ISBN : 331970365X

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Book Description

This book presents the proceedings of one of the major conferences in fatigue, fracture and structural integrity (NT2F). The papers are organized and divided in five different themes: fatigue and fracture mechanics of structures and advanced materials; fatigue and fracture in pressure vessels and pipelines: mechanical behavior and structural integrity of welded, bonded and bolted joints; residual stress and environmental effects on the fatigue behavior; and simulation methods, analytical and computation models in fatigue and fracture.



Fatigue Handbook

Author : A. Almar-Naess

Publisher : Fagbokforlaget

Page : 0 pages

File Size : 13,94 MB

Release : 1985

Category : Fracture mechanics

ISBN : 9788251906623

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Book Description

Soon after oil and gas exploration and production began in the North Sea in the 1960s, it became apparent that the steel structure design developed for offshore activities in the Gulf of Mexico was not adequate when transferred to the rigorous North Sea environment. Realizing the great need for a better understanding of the fatigue phenomenon, concerned materials scientists at SINTEF and Det norske Veritas prepared a five-year programme for intensified research on fatigue of offshore steel structures. It became the National Five Year Programme for Fatigue of Offshore Steel Structures in 1981. This text comprises a study of fatigue in offshore steel structures. It seeks to make results in the area available in a form that can be utilized and understood by those responsible for the different stages in engineering, design, fabrication and service of offshore structures.



Fatigue Life Analyses of Welded Structures

Author : Tom Lassen

Publisher : John Wiley & Sons

Page : 442 pages

File Size : 17,5 MB

Release : 2013-03-01

Category : Technology & Engineering

ISBN : 1118614704

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Book Description

Avoiding or controlling fatigue damage is a major issue in the design and inspection of welded structures subjected to dynamic loading. Life predictions are usually used for safe life analysis, i.e. for verifying that it is very unlikely that fatigue damage will occur during the target service life of a structure. Damage tolerance analysis is used for predicting the behavior of a fatigue crack and for planning of in-service scheduled inspections. It should be a high probability that any cracks appearing are detected and repaired before they become critical. In both safe life analysis and the damage tolerance analysis there may be large uncertainties involved that have to be treated in a logical and consistent manner by stochastic modeling. This book focuses on fatigue life predictions and damage tolerance analysis of welded joints and is divided into three parts. The first part outlines the common practice used for safe life and damage tolerance analysis with reference to rules and regulations. The second part emphasises stochastic modeling and decision-making under uncertainty, while the final part is devoted to recent advances within fatigue research on welded joints. Industrial examples that are included are mainly dealing with offshore steel structures. Spreadsheets which accompany the book give the reader the possibility for hands-on experience of fatigue life predictions, crack growth analysis and inspection planning. As such, these different areas will be of use to engineers and researchers.