Fracture Toughness and Defect Tolerance of Electroslag Welds PDF Download
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 120
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 120
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Author:
Publisher:
ISBN:
Category : Electroslag welding
Languages : en
Pages : 244
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Book Description
Author: Philippa L Moore
Publisher: Elsevier
ISBN: 1782423915
Category : Technology & Engineering
Languages : en
Pages : 227
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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.
Author: Uwe Zerbst
Publisher: Springer
ISBN: 3030040739
Category : Technology & Engineering
Languages : en
Pages : 174
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Book Description
This book provides a comprehensive and thorough guide to those readers who are lost in the often-confusing context of weld fatigue. It presents straightforward information on the fracture mechanics and material background of weld fatigue, starting with fatigue crack initiation and short cracks, before moving on to long cracks, crack closure, crack growth and threshold, residual stress, stress concentration, the stress intensity factor, J-integral, multiple cracks, weld geometries and defects, microstructural parameters including HAZ, and cyclic stress-strain behavior. The book treats all of these essential and mutually interacting parameters using a unique form of analysis.
Author: Eric James Kaufmann
Publisher:
ISBN:
Category : Fracture mechanics
Languages : en
Pages : 54
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Book Description
Abstract: "A new tanker design currently under development incorporates new design and fabrication features which are expected to reduce shipbuilding costs by as much as 30 percent and provide for environmentally safe transport of oil products. This new double-hull design incorporates 2.1 m x 2.4 m x 15.2 m (7'x8'x50') cellular modules joined into 172-268 metric ton (190-295 ton) hull sub-assemblies. The sub- assemblies can be incorporated into new or existing single-hulled ships. As currently planned, the two hull plates and cell web girder of each module will be joined with a single, continuous weld pass in a vertical orientation using the Electrogas welding (EGW) process. The EGW process was selected because of the high deposition rates which can be achieved (23 kg/hr) and corresponding high productivity. Because of uncertainties associated with the weld process stemming from experiences with the related electroslag welding (ESW) process regarding fatigue and low fracture toughness, studies were undertaken to evaluate the fatigue and fracture behavior of this weld detail. The results of the fatigue study were reported previously. The current study is a follow-on which examines the fracture toughness of the electrogas weld metal. Elastic-plastic fracture toughness (J[subscript IC]) and Charpy V-notch (CVN) impact toughness tests were performed on a test plate fabricated using the same materials and weld procedures as used in full-size fabrications. Compact tension (CT) and Charpy V-notch test specimens were fabricated from the weld metal in the L-T and T-L orientation. Additional test specimens were located in the heat-affected-zone (HAZ) and base plate (ABS Grade CS). A total of 12 compact tension specimens and 72 CVN specimens were tested. Test results from both compact tension and CVN tests indicate that the fracture toughness of the base metal, weld metal and HAZ were similar. The CVN tests indicated a 20 J (15 ft-lb) transition temperature of at least -40 C. The J[subscript IC] tests performed in accordance with ASTM E 813 resulted in J[subscript IC] values in the weld metal and HAZ ranging from 106-146 kJ/m2 (608-834 in-lb/in2) which correlate to K[subscript c] values of 148- 174 MPa(m)[superscript 1/2] (135-158 ksi(in)[superscript 1/2]). No significant orientation effect was observed in the weld metal. Based upon the types and sizes of fabrication flaws observed in the previous fatigue study, an assessment of their fracture sensitivity was performed in light of the measured fracture toughness. It was concluded that none of the observed fabrication flaws were critical from a fracture viewpoint and that critical flaw sizes were through-thickness and large enough to be detected by visual inspection."
Author:
Publisher:
ISBN:
Category : Welding
Languages : en
Pages : 830
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Author: K Macdonald
Publisher: Elsevier
ISBN: 0857092502
Category : Technology & Engineering
Languages : en
Pages : 353
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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
Author: D Croft
Publisher: Elsevier
ISBN: 1845698819
Category : Technology & Engineering
Languages : en
Pages : 119
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Book Description
An updated, revised and expanded version of Professor Burdekin's earlier work of the same title, this book explains this branch of thermal engineering in clear, practical terms. It concentrates on steels - the most predominant engineering media - and is essential reading for all those involved in the study or practice of welding high performance steel structures.
Author:
Publisher:
ISBN:
Category : Welding
Languages : en
Pages : 644
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Book Description
Author:
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 928
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Book Description
