Multiaxial Notch Fatigue

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Multiaxial Notch Fatigue

Multiaxial Notch Fatigue
  • Author : Luca Susmel
  • Publisher :
  • Release Date :2009-03-20
  • Total pages :588
  • ISBN : 1845695836
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Summary : Metal and composite components used in structural engineering not only contain geometrical features resulting in stress concentration phenomena, but they are also subjected to in-service multiaxial fatigue loading. To address the problem, structural engineers need reliable methodologies which allow for an adequate margin of safety. The book summarises methods devised by the author to design real components against multiaxial fatigue by taking full advantage not only of nominal but also of local stress-strain quantities. The book begins by reviewing definitions suitable for calculating the stress-strain quantities commonly used to perform fatigue assessment. The Modified Wöhler Curve Method is then explained in detail, by focusing attention on both the high- and the medium-cycle fatigue regime. The existing links between the multiaxial fatigue criterion and physical properties are also discussed. A procedure suitable for employing the method developed by the author to estimate fatigue damage both in notched and in welded components is explained. The Modified Manson-Coffin Curve method is investigated in depth, by reviewing those concepts playing a fundamental role in the so-called strain based approach. Lastly, the problem of performing the fatigue assessment of composite materials is addressed by considering design parameters influencing composite behaviour under complex cyclic loading paths and those criteria suitable for designing real components against multiaxial fatigue. The book also contains two appendices summarising experimental data from the technical literature. These appendices provide a unique and highly valuable resource for engineers. The appendices summarise around 100 values of the material characteristic length L, experimentally determined by testing specimens made of different engineering materials and about 4500 experimental fatigue results generated by testing plain, notched and welded specimens under constant-amplitude proportional and non-proportional multiaxial fatigue loading are listed. Summarises methods devised by the author to design real components against multiaxial fatigue Reviews definitions suitable for calculating the stress-strain quantities commonly used to perform fatigue assessment Includes an in-depth explanation of both the Modified Wöhler Curve and Modified Manson-Coffin Curve Method

Engineering Approaches to Multiaxial and Non‐proportional Fatigue of Notched Components

Engineering Approaches to Multiaxial and Non‐proportional Fatigue of Notched Components
  • Author : N.A
  • Publisher :
  • Release Date :2018
  • Total pages :329
  • ISBN :
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Summary : Abstract: Many components in engineering applications are subjected to multiple and uncorrelated loads during service‐life. Thus, multiaxial stress states with rotating principal axis may occur. For this special case of multiaxial and non‐proportional stresses the results of many fatigue assessment methods which are used in the industrial practice are of poor quality. Fatigue lifetimes of shoulder shafts (quenched and tempered steel) are estimated on the basis of the extended short crack model in combination with a multiaxial notch approximation. This approach shows a high accuracy but the precise modelling of non‐proportional hardening effects requires a complex plasticity model. Therefore, a simplified approach for considering non‐proportional hardening is introduced. Thus, the calculation method gets applicable in the engineering practice. Results are compared to well‐established engineering approaches. Furthermore, new component tests on die‐cast housings with two load channels under constant and variable amplitude loading are presented and discussed. The loads are applied in‐phase (proportional) as well as out‐of‐phase, which results in a high non‐proportional stress path at the crack initiation site. The effects of multiaxial and non‐proportional stress states seem to play a minor role in the fatigue assessment of die‐cast housings.

Advances in Multiaxial Fatigue

Advances in Multiaxial Fatigue
  • Author : David L. McDowell,Rod Ellis
  • Publisher :
  • Release Date :1993
  • Total pages :455
  • ISBN : 9780803118621
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Summary : Papers presented at the ASTM Symposium on Multiaxial Fatigue, held in San Diego, November 1991, to communicate the most recent international advances in multiaxial cyclic deformation and fatigue research as well as applications to component analysis and design. The 24 papers are grouped into five ca

Biaxial/Multiaxial Fatigue and Fracture

Biaxial/Multiaxial Fatigue and Fracture
  • Author : Andrea Carpinteri,Manuel De Freitas,Andrea Spagnoli
  • Publisher :
  • Release Date :2003-03-19
  • Total pages :516
  • ISBN : 9780080527819
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Summary : The European Structural Integrity Society (ESIS) Technical Commitee on Fatigue of Engineering Materials and Structures (TC3) decided to compile a Special Technical Publication (ESIS STP) based on the 115 papers presented at the 6th International Conference on Biaxial/Multiaxial Fatigue and Fracture. The 25 papers included in the STP have been extended and revised by the authors. The conference was held in Lisbon, Portugal, on 25-28 June 2001, and was chaired by Manual De Freitas, Instituto Superior Tecnico, Lisbon. The meeting, organised by the Instituto Superior Tecnico and sponsored by the Portuguese Minesterio da Cienca e da Tecnologia and by the European Structural Integrity Society, was attended by 151 delegates from 20 countries. The papers in the present book deal with the theoretical, numerical and experimental aspects of the Multiaxial fatigue and fracture of engineering materials and structures. They are divided in to the following six sections; Multiaxial Fatigue of Welded Structures; High cycle Multiaxial fatigue; Non proportional and Variable-Amplitude loading; Defects, Notches, Crack Growth; Low Cycle Multiaxial Fatigue; Applications and Testing Methods. As is well-known, most engineering components and structures in the mechanical, aerospace, power generation, and other industries are subjected to multiaxial loading during their service life. One of the most difficult tasks in design against fatigue and fracture is to translate the information gathered from uniaxial fatigue and fracture tests on engineering materials into applications involving complex states of cyclic stress-strain conditions. This book is the result of co-operation between many researchers from different laboratories, universities and industries in a number of countries.

Multiaxial Fatigue

Multiaxial Fatigue
  • Author : Keith John Miller,Michael W. Brown,M. W. Brown
  • Publisher :
  • Release Date :1985
  • Total pages :741
  • ISBN : 9780803104440
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Summary :

Advances in Fatigue Science and Technology

Advances in Fatigue Science and Technology
  • Author : C. Moura Branco,L. Guerra Rosa
  • Publisher :
  • Release Date :2012-12-06
  • Total pages :976
  • ISBN : 9400922779
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Summary : This volume contains the edited version of lectures and selected research contributions presented at the NATO ADVANCED STUDY INSTITUTE on ADVANCES IN FATIGUE SCIENCE AND TECHNOLOGY. held in Alvor. Portugal, 4th to 15th of April 1988. and organized by CEMUL - Center of Mechanics and Materials of The Technical University of Lisbon. The Institute was attended by 101 participants, including 15 lecturers. from 14 countries. The participants were leading scientists and engineers from universities, research institutions and industry. and also Ph.D~ students. Some participants presented papers during the Institute reporting the state-of-art of their research projects. All the sessions wel'e very active and quite extensive discussions on scientific aspects took place during the Institute. The Advanced Study Institute provided a forum for interaction among eminent scientists and engineers. from different schools of thought and young researchers. The Institute addressed the foundations and current state of the art of essential aspects related to fatigue science and technology, namely: Short Cracks, Metallurgical Aspects, Environmental Fatigue, Threshold Behaviour, Notch Behaviour. Creep and Fatigue Interactions at High Temperature, Multiaxial Fatigue, Low Cycle Fatigue, Methodology of Fatigue Testing, Variable Amplitude Fatigue, Fatigue of Advanced Materials. Elastic-Plastic Fatigue, and several engineering applications such as welded joints, energy systems, offshore structures, automotive industry, machine and engine components. This book is organized in three parts: Part I: Fundamentals of Fatigue Part II: Engineering Applications Part III: Research Contributions The research contributions covered most of the areas referred above.

Fatigue Design of Components

Fatigue Design of Components
  • Author : G. Marquis,J. Solin
  • Publisher :
  • Release Date :1997-12-10
  • Total pages :226
  • ISBN : 9780080531601
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Summary : This volume contains a selection of papers presented at Fatigue Design 95 held in Helsinki, Finland from 5-8 September 1995. The papers have been peer reviewed and present practical aspects for the design of components and structures to avoid fatigue failure. Topics covered include: fatigue design experiences, ground vehicle components, component reliability, multiaxial fatigue, notch analysis, service loading, welded structures, probabilistics aspects in fatigue, fatigue design optimization.

IIW Recommendations for the Fatigue Assessment of Welded Structures By Notch Stress Analysis

IIW Recommendations for the Fatigue Assessment of Welded Structures By Notch Stress Analysis
  • Author : W Fricke
  • Publisher :
  • Release Date :2012-10-22
  • Total pages :48
  • ISBN : 085709856X
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Summary : The notch stress approach for fatigue assessment of welded joints is based on the highest elastic stress at the weld toe or root. In order to avoid arbitrary or infinite stress results, a rounded shape with a reference radius instead of the actual sharp toe or root is usually assumed. IIW recommendations for the fatigue assessment of welded structures by notch stress analysis reviews different proposals for reference radii together with associated S-N curves. Detailed recommendations are given for the numerical analysis of notch stress by the finite or boundary element method. Several aspects are discussed, such as the structural weakening by keyhole-shaped notches and the consideration of multiaxial stress states. Appropriate S-N curves are presented for the assessment of the fatigue strength of different materials. Finally, four examples illustrate the application of the approach as well as the variety of structures which can be analysed and the range of results that can be obtained from different models. Provides detailed recommendations for the number analysis of notch stress by the finite or boundary element method Discusses structural weakening by keyhole-shaped notches and the consideration of multiaxial stress states Provides four comprehensive examples, illustrating the variety of structures which can be analysed and the range of results that can be obtained from different models

Multiaxial Fatigue and Deformation

Multiaxial Fatigue and Deformation
  • Author : Sreeramesh Kalluri,Peter J. Bonacuse
  • Publisher :
  • Release Date :2000-01-01
  • Total pages :443
  • ISBN : 0803128657
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Summary : Contains papers from a May 1999 symposium, describing state-of-the-art multiaxial testing techniques and analytical methods for characterizing fatigue and deformation behaviors of engineering materials. Papers are classified into sections on multiaxial strength of materials, multiaxial deformation,

Fatigue and Durability of Structural Materials

Fatigue and Durability of Structural Materials
  • Author : Gary R. Halford
  • Publisher :
  • Release Date :2006
  • Total pages :456
  • ISBN : 1615030743
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Summary : Fatigue and Durability of Structural Materials explains how mechanical material behavior relates to the design of structural machine components. The major emphasis is on fatigue and failure behavior using engineering models that have been developed to predict, in advance of service, acceptable fatigue and other durability-related lifetimes. The book covers broad classes of materials used for high-performance structural applications such as aerospace components, automobiles, and power generation systems. Coverage focuses on metallic materials but also addresses unique capabilities of important nonmetals. The concepts are applied to behavior at room or ambient temperatures; a planned second volume will address behavior at higher-temperatures. The volume is a repository of the most significant contributions by the authors to the art and science of material and structural durability over the past half century. During their careers, including 40 years of direct collaboration, they have developed a host of durability models that are based on sound physical and engineering principles. Yet, the models and interpretation of behavior have a unique simplicity that is appreciated by the practicing engineer as well as the beginning student. In addition to their own pioneering work, the authors also present the work of numerous others who have provided useful results that have moved progress in these fields. This book will be of immense value to practicing mechanical and materials engineers and designers charged with producing structural components with adequate durability. The coverage is appropriate for a range of technical levels from undergraduate engineering students through material behavior researchers and model developers. It will be of interest to personnel in the automotive and off-highway vehicle manufacturing industry, the aeronautical industry, space propulsion and the power generation/conversion industry, the electric power industry, the machine tool industry, and any industry associated with the design and manufacturing of mechanical equipment subject to cyclic loads.

Cyclic plasticity modeling and multiaxial fatigue assessment for an austenitic steel

Cyclic plasticity modeling and multiaxial fatigue assessment for an austenitic steel
  • Author : Jie Fang
  • Publisher :
  • Release Date :2015-07-23
  • Total pages :152
  • ISBN : 3831644845
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Summary : The present work aims at engineers and scientists in the field of computational mechanics of materials. The objective of this work is to develop a suitable constitutive law and apply it to study effects of cyclic loading and geometry on the fatigue assessment. Firstly, a systematical investigation on the mechanic behaviors of an austenitic stainless steel is carried out. Different multiaxial fatigue life prediction models are studied to assess fatigue damage. The Karim-Ohno kinematic hardening model is extended to incorporate more complex mechanical behaviors. The proposed constitutive model is implemented into FEM code ABAQUS. Finally a computational fatigue analysis methodology is proposed for performing life prediction of notched components based on elastic-plastic computation.

Frattura ed Integrità Strutturale: Annals 2014

Frattura ed Integrità Strutturale: Annals 2014
  • Author : Luca Susmel,John Yates,Alfredo Navarro,Thierry Palin-Luc
  • Publisher :
  • Release Date :2014-09-12
  • Total pages :1208
  • ISBN : 8895940490
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Summary :

Multiaxial Fatigue and Deformation Testing Techniques

Multiaxial Fatigue and Deformation Testing Techniques
  • Author : Sreeramesh Kalluri
  • Publisher :
  • Release Date :1997
  • Total pages :309
  • ISBN : 9780803120457
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Summary : Fourteen papers from the May 1995 symposium focus on the advances that new materials testing equipment and digital computers have made possible. Representative topics: testing facilities for multiaxial loading of tubular specimens, biaxial deformation experiments over multiple string regimes, charac

Biaxial and Multiaxial Fatigue (EGF 3)

Biaxial and Multiaxial Fatigue (EGF 3)
  • Author : M. W. Brown,K. J. Miller
  • Publisher :
  • Release Date :1989
  • Total pages :686
  • ISBN :
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Summary : The 36 paper spresented in this volume were presented at the second international conference on biaxial/multiaxial fatigue.

Low-cycle Fatigue and Life Prediction

Low-cycle Fatigue and Life Prediction
  • Author : C. Amzallag,B. N. Leis,P. Rabbe
  • Publisher :
  • Release Date :1982-01-01
  • Total pages :651
  • ISBN :
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Summary :

Fatigue of Structures and Materials

Fatigue of Structures and Materials
  • Author : Jaap Schijve
  • Publisher :
  • Release Date :2007-05-08
  • Total pages :520
  • ISBN : 0306483963
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Summary : This book is primarily a textbook. It is written for engineers, students and teachers, and it should also be useful for people working on various topics related to fatigue of structures and materials. The book can be used for graduate and undergraduate courses and for short courses for people already working in the industry, laboratories, or research institutes. Furthermore, the book offers various comments which can be useful to research-workers in order to consider the practical relevance of laboratory investigations and to plan future research. An important theme of the book is the understanding of what happens in the material of a structure in service if the structure is subjected to a spectrum of cyclic loads. Knowledge of the fatigue mechanism in the material and how it can be affected by a large variety of practical conditions is essential for dealing with fatigue problems. The designer of a dynamically loaded structure must “design against fatigue”. This includes not only the overall concept of the structure with related safety and economic aspects, but also questions on detail design, joints, production and material surface quality. At the same time, the designer must try to predict the fatigue performance of the structure. This requires a knowledge of the various influencing factors, also because predictions on fatigue have their limitations and shortcomings. Similar considerations arise if fatigue problems occur after a long period in service when decisions must be made on remedial actions.

Multiaxial Fatigue

Multiaxial Fatigue
  • Author : Darrell Socie,Gary Marquis
  • Publisher :
  • Release Date :2000
  • Total pages :484
  • ISBN : 9780768004335
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Summary :

Mechanical Fatigue of Metals

Mechanical Fatigue of Metals
  • Author : José A.F.O. Correia,Abílio M.P. De Jesus,António Augusto Fernandes,Rui Calçada
  • Publisher :
  • Release Date :2019-05-07
  • Total pages :413
  • ISBN : 3030139808
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Summary : This volume contains the proceedings of the XIX International Colloquium on Mechanical Fatigue of Metals, held at the Faculty of Engineering of the University of Porto, Portugal, 5-7 September 2018. This International Colloquium facilitated and encouraged the exchange of knowledge and experiences among the different communities involved in both basic and applied research in the field of the fatigue of metals, looking at the problem of fatigue exploring analytical and numerical simulative approaches. Fatigue damage represents one of the most important types of damage to which structural materials are subjected in normal industrial services that can finally result in a sudden and unexpected abrupt fracture. Since metal alloys are still today the most used materials in designing the majority of components and structures able to carry the highest service loads, the study of the different aspects of metals fatigue attracts permanent attention of scientists, engineers and designers.

Third International Conference on Biaxial/multiaxial Fatigue

Third International Conference on Biaxial/multiaxial Fatigue
  • Author : N.A
  • Publisher :
  • Release Date :1989
  • Total pages :329
  • ISBN :
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Summary :

Proceedings of Crack Paths (CP 2012), Gaeta, Italy 2012

Proceedings of Crack Paths (CP 2012), Gaeta, Italy 2012
  • Author : N.A
  • Publisher :
  • Release Date :2012-09-19
  • Total pages :329
  • ISBN : 889594044X
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Summary :