Fatigue and Fracture Mechanics of Offshore Structures
Fatigue and Fracture Mechanics of Offshore Structures

Author: Linus Etube

Publisher:

Published: 2001

Total Pages: 200

ISBN-13:

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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.

Fatigue and Fracture Mechanics of Offshore Structures
Fatigue and Fracture Mechanics of Offshore Structures

Author: Naveen Patniak

Publisher: Scitus Academics LLC

Published: 2016

Total Pages: 0

ISBN-13: 9781681173719

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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 Offshore Structures
Fatigue and Fracture Mechanics of Offshore Structures

Author: Linus S. Etube

Publisher:

Published: 2001

Total Pages: 164

ISBN-13: 9780470026731

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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 Behaviour of Offshore Structures
Fatigue Behaviour of Offshore Structures

Author: Ashok Gupta

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 312

ISBN-13: 364282899X

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and Literature Rev iew Chapter 1 1. INTRODUCTION AND LITERATURE REVIEW The exploration for oil and gas in ever increasing water depths has given an impetus to research efforts on the behaviour of offshore structures under ocean environment. These structures are continuously subjected to environmental loading because of waves, wind and current. A response analysis is required to assess the safety of offshore structure under severe storm conditions as well as for estimation of damage caused by less severe but more frequently occuring sea states. A majority of the reported failures in the life time of offshore structures are in fact fatigue failures. The offshore structures are usually built in the form of welded tubular structures. The joints of these tubular members experience the fatigue damage mainly due to small defects in welding which act as crack initiators, high stress concentrations and the variable loads. The variable loads due to the ocean waves cause cyclic stress variation in the structural members and the accumu lated effect of these stresses results in the fatigue failure.

Fatigue Design of Marine Structures
Fatigue Design of Marine Structures

Author: Inge Lotsberg

Publisher: Cambridge University Press

Published: 2016-04-13

Total Pages: 559

ISBN-13: 1107121337

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This is a theoretical and practical guide for fatigue design of marine structures including sailing ships and offshore oil structures.

Fatigue in Offshore Structures
Fatigue in Offshore Structures

Author: W. Dover

Publisher: CRC Press

Published: 1996-01-01

Total Pages: 758

ISBN-13: 9789054107132

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This two-volume collection of essays covers such topics as: parameters influencing the stress concentration factors in multiplanar joints; local flexibility of tubular joints of offshore platforms; fatigue analysis and fracture mechanics; and damage assessment and repair of offshore structures.

Fracture and Fatigue of Welded Joints and Structures
Fracture and Fatigue of Welded Joints and Structures

Author: K Macdonald

Publisher: Elsevier

Published: 2011-04-19

Total Pages: 353

ISBN-13: 0857092502

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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

Fracture Mechanics Assessment of Fatigue Cracks in Offshore Tubular Structures
Fracture Mechanics Assessment of Fatigue Cracks in Offshore Tubular Structures

Author: Daren Bowness

Publisher:

Published: 2002

Total Pages: 247

ISBN-13: 9780717623280

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With the introduction of Safety Case Regulations, following Lord Cullen's report on the Piper Alpha disaster, a Safety Case, which is renewed every three years, is required for each installation operating in UK waters, to ensure that structural integrity is maintained. The reassessment of structural integrity is therefore an important issue amongst offshore operators. Fracture mechanics analysis, using the stress intensity factor, provides the only viable means to assess the remaining fatigue life of cracked tubular joints. Also, assessing the significance of the fatigue damage allows expensive in-service inspections to be scheduled effectively, thus improving safety. The economic benefit of a reliable fatigue crack growth analysis procedure can thus be significant, as it enables the risk of fatigue failure to be properly evaluated, allowing expensive repairs of damaged components to be carried out only when necessary. The results of this research are therefore of interest to offshore oil and gas operators and authorities enforcing offshore safety regulations.

Fracture and Fatigue Control in Structures
Fracture and Fatigue Control in Structures

Author: Stanley Theodore Rolfe

Publisher: ASTM International

Published: 1977

Total Pages: 527

ISBN-13:

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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