Erm Dungsfestigkeit Der Konstruktionen
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Fatigue Design Of Welded Joints And Components
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Author : A Hobbacher
language : en
Publisher: Woodhead Publishing
Release Date : 1996-10-31
Fatigue Design Of Welded Joints And Components written by A Hobbacher and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-10-31 with Technology & Engineering categories.
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.
Structural Hot Spot Stress Approach To Fatigue Analysis Of Welded Components
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Author : Erkki Niemi
language : en
Publisher: Springer
Release Date : 2017-08-28
Structural Hot Spot Stress Approach To Fatigue Analysis Of Welded Components written by Erkki Niemi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-08-28 with Technology & Engineering categories.
This book provides background and guidance on the use of the structural hot-spot stress approach to fatigue analysis. The book also offers Design S-N curves for use with the structural hot-spot stress for a range of weld details, and presents parametric formulas for calculating stress increases due to misalignment and structural discontinuities. Highlighting the extension to structures fabricated from plates and non-tubular sections. The structural hot-spot stress approach focuses on cases of potential fatigue cracking from the weld toe and it has been in use for many years in tubular joints. Following an explanation of the structural hot-spot stress, its definition and its relevance to fatigue, the book describes methods for its determination. It considers stress determination from both finite element analysis and strain gauge measurements, and emphasizes the use of finite element stress analysis, providing guidance on the choice of element type and size for use with either solid or shell elements. Lastly, it illustrates the use of the recommendations in four case studies involving the fatigue assessment of welded structures using the structural hot-spot stress
Power From The Wind
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Author : Palmer Cosslett Putnam
language : en
Publisher:
Release Date : 1948
Power From The Wind written by Palmer Cosslett Putnam and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1948 with Technology & Engineering categories.
"For six years a group of eminent scientists and engineers, under the auspices of the S. Morgan Smith company, has worked on the technical problems of the 1250-kilowatt windmill. Leading specialists in many fields have served as consultants. The ultimate economics of wind-power have been explored in a preliminary way. This book is a summary of the problems which faced us in 1939, our attempts at solving them, our findings and conclusions. ..." --Taken from the preface.
Stress Determination For Fatigue Analysis Of Welded Components
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Author : E. Niemi
language : en
Publisher: Woodhead Publishing
Release Date : 1995-04-30
Stress Determination For Fatigue Analysis Of Welded Components written by E. Niemi and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-04-30 with Technology & Engineering categories.
This report introduces definitions of the terminology relevant to stress determination for fatigue analysis of welded components. The various stress concentrations, stress categories and fatigue analysis methods are defined. Fatigue analysis methods considered are nominal stress, hot spot stress, notch stress, notch strain and fracture mechanics approaches. The report also contains comprehensive recommendations concerning the application of finite element methods and experimental methods for stress determination. It is intended for fatigue design of common welded structures, such as cranes, excavators, vehicle frames, bridges, ship hulls, offshore structures etc. fabricated from materials at least 3mm thick. In general, attention is focused on weld details which give rise to fatigue cracking from the surface, notably from the weld toe.
Recommendations For Fatigue Design Of Welded Joints And Components
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Author : A. F. Hobbacher
language : en
Publisher: Springer
Release Date : 2015-12-23
Recommendations For Fatigue Design Of Welded Joints And Components written by A. F. Hobbacher and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-12-23 with Technology & Engineering categories.
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).
Fatigue Strength Of Welded Structures
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Author : S J Maddox
language : en
Publisher: Woodhead Publishing
Release Date : 2014-03-14
Fatigue Strength Of Welded Structures written by S J Maddox and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-03-14 with Technology & Engineering categories.
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.
Iiw Recommendations On Methods For Improving The Fatigue Strength Of Welded Joints
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Author : P J Haagensen
language : en
Publisher: Woodhead Publishing
Release Date : 2013-01-25
Iiw Recommendations On Methods For Improving The Fatigue Strength Of Welded Joints written by P J Haagensen and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-01-25 with Technology & Engineering categories.
The weld toe is a primary source of fatigue cracking because of the severity of the stress concentration it produces. Weld toe improvement can increase the fatigue strength of new structures significantly. It can also be used to repair or upgrade existing structures. However, in practice there have been wide variations in the actual improvements in fatigue strength achieved. Based on an extensive testing programme organised by the IIW, this report reviews the main methods for weld toe improvement to increase fatigue strength: burr grinding, TIG dressing and hammer and needle peening. The report provides specifications for the practical use of each method, including equipment, weld preparation and operation. It also offers guidance on inspection, quality control and training as well as assessments of fatigue strength and thickness effects possible with each technique. IIW recommendations on methods for improving the fatigue strength of welded joints will allow a more consistent use of these methods and more predictable increases in fatigue strength. Provides specifications for the practical use of each weld toe method, including equipment, weld preparation and operation Offers guidance on inspection, quality control and training, as well as assessments of fatigue strength and thickness effects possible with each technique This report will allow a more consistent use of these methods and more predictable increases in fatigue strength
Wega Large Wind Turbines
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Author : Erich Hau
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-04-17
Wega Large Wind Turbines written by Erich Hau and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-17 with Technology & Engineering categories.
Contents: Large Wind Turbine Technology - State of the Art. - Outline ofWEGA Large Wind Turbine Programme. - The WEGA Wind Turbines - Design and Construction. - Comparison of Essential Technical Criteria. - Commissioning and Early Operational Experiences. - Outlook to the Future Programme WEGA II.
Iiw Recommendations For The Hfmi Treatment
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Author : Gary B. Marquis
language : en
Publisher: Springer
Release Date : 2016-09-29
Iiw Recommendations For The Hfmi Treatment written by Gary B. Marquis and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-29 with Technology & Engineering categories.
This book of recommendations presents an overview of High Frequency Mechanical Impact (HFMI) techniques existing today in the market and their proper procedures, quality assurance measures and documentation. Due to differences in HFMI tools and the wide variety of potential applications, certain details of proper treatments and quantitative quality control measures are presented generally. An example of procedure specification as a quality assurance measure is given in the Appendix. Moreover, the book presents procedures for the fatigue life assessment of HFMI-improved welded joints based on nominal stress, structural hot spot stress and effective notch stress. It also considers the extra benefit that has been experimentally observed for HFMI-treated high-strength steels. The recommendations offer proposals on the effect of loading conditions like high mean stress fatigue cycles, variable amplitude loading and large amplitude/low cycle fatigue cycles. Special considerations for low stress concentration welded joints are also given. In order to demonstrate the use of the guideline, the book provides several fatigue assessment examples.
Fatigue Design Procedure For Welded Hollow Section Joints
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Author : X-L Zhao
language : en
Publisher: Elsevier
Release Date : 2000-05-08
Fatigue Design Procedure For Welded Hollow Section Joints written by X-L Zhao and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-05-08 with Technology & Engineering categories.
This International Institute of Welding (IIW) report was presented at the 52nd Annual Assembly in Lisbon in June 1999. It contains recommendations representing a consensus on international best practice, focusing on a 'hot spot stress' approach.A wide range of joint types is covered, the new fatigue design curve for both RHS and CHS is dealt with and detailed values for stress concentration factors are provided.The purpose of this current IIW document is to serve both as an International Standards Organisation (ISO) draft specification and as a model standard for national and regional specifications worldwide.The Recommendations (Part one) and Commentary (Part two) were edited by Dr X-L Zhao of Monash University, Australia and Professor J A Packer of the University of Toronto, Canada.