Skip to main content

Multiaxial Notch Fatigue

In Order to Read Online or Download Multiaxial Notch Fatigue Full eBooks in PDF, EPUB, Tuebl and Mobi you need to create a Free account. Get any books you like and read everywhere you want. Fast Download Speed ~ Commercial & Ad Free. We cannot guarantee that every book is in the library!

Multiaxial Notch Fatigue

Multiaxial Notch Fatigue Book
Author : Luca Susmel
Publisher : Elsevier
Release : 2009-03-20
ISBN : 1845695836
Language : En, Es, Fr & De

GET BOOK

Book Description :

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

Biaxial Multiaxial Fatigue and Fracture

Biaxial Multiaxial Fatigue and Fracture Book
Author : Andrea Carpinteri,Manuel De Freitas,Andrea Spagnoli
Publisher : Elsevier
Release : 2003-03-19
ISBN : 9780080527819
Language : En, Es, Fr & De

GET BOOK

Book Description :

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.

Proceedings of 1st International Conference on Structural Damage Modelling and Assessment

Proceedings of 1st International Conference on Structural Damage Modelling and Assessment Book
Author : Magd Abdel Wahab
Publisher : Springer Nature
Release : 2021-01-13
ISBN : 9811591210
Language : En, Es, Fr & De

GET BOOK

Book Description :

This book comprises the select proceedings of Structural Damage Modelling and Assessment (SDMA 2020) presented online on 4–5 August 2020. It discusses the recent advances in fields related to damage modelling, damage detection and assessment, non-destructive testing and evaluation, structure integrity and structural health monitoring. The conference covers all research topics and applications relevant to structural damage modelling and assessment using theoretical, numerical and experimental techniques. This book is useful to scientists and engineers in academia and industry who are interested in the field of structural damage and integrity.

Advances in Multiaxial Fatigue

Advances in Multiaxial Fatigue Book
Author : David L. McDowell,Rod Ellis
Publisher : ASTM International
Release : 1993
ISBN : 9780803118621
Language : En, Es, Fr & De

GET BOOK

Book Description :

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

Fatigue Behavior Under Multiaxial Stress States Including Notch Effects and Variable Amplitude Loading

Fatigue Behavior Under Multiaxial Stress States Including Notch Effects and Variable Amplitude Loading Book
Author : Nicholas R. Gates
Publisher : Unknown
Release : 2016
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

The central objective of the research performed in this study was to be able to better understand and predict fatigue crack initiation and growth from stress concentrations subjected to complex service loading histories. As such, major areas of focus were related to the understanding and modeling of material deformation behavior, fatigue damage quantification, notch effects, cycle counting, damage accumulation, and crack growth behavior under multiaxial nominal loading conditions. To support the analytical work, a wide variety of deformation and fatigue tests were also performed using tubular and plate specimens made from 2024-T3 aluminum alloy, with and without the inclusion of a circular through-thickness hole. However, the analysis procedures implemented were meant to be general in nature, and applicable to a wide variety of materials and component geometries. As a result, experimental data from literature were also used, when appropriate, to supplement the findings of various analyses. Popular approaches currently used for multiaxial fatigue life analysis are based on the idea of computing an equivalent stress/strain quantity through the extension of static yield criteria. This equivalent stress/strain is then considered to be equal, in terms of fatigue damage, to a uniaxial loading of the same magnitude. However, it has often been shown, and was shown again in this study, that although equivalent stress- and strain-based analysis approaches may work well in certain situations, they lack a general robustness and offer little room for improvement. More advanced analysis techniques, on the other hand, provide an opportunity to more accurately account for various aspects of the fatigue failure process under both constant and variable amplitude loading conditions. As a result, such techniques were of primary interest in the investigations performed. By implementing more advanced life prediction methodologies, both the overall accuracy and the correlation of fatigue life predictions were found to improve for all loading conditions considered in this study. The quantification of multiaxial fatigue damage was identified as being a key area of improvement, where the shear-based Fatemi-Socie (FS) critical plane damage parameter was shown to correlate all fully-reversed constant amplitude fatigue data relatively well. Additionally, a proposed modification to the FS parameter was found to result in improved life predictions in the presence of high tensile mean stress and for different ratios of nominal shear to axial stress. For notched specimens, improvements were also gained through the use of more robust notch deformation and stress gradient models. Theory of Critical Distances (TCD) approaches, together with pseudo stress-based plasticity modeling techniques for local stress-strain estimation, resulted in better correlation of multiaxial fatigue data when compared to traditional approaches such as Neuber's rule with fatigue notch factor. Since damage parameters containing both stress and strain terms, such as the FS parameter, are able to reflect changes in fatigue damage due to transient material hardening behavior, this issue was also investigated with respect to its impact on variable amplitude life predictions. In order to ensure that material deformation behavior was properly accounted for, stress-strain predictions based on an Armstrong-Frederick-Chaboche style cyclic plasticity model were first compared to results from deformation tests performed under a variety of complex multiaxial loading conditions. The model was simplified based on the assumption of Masing material behavior, and a new transient hardening formulation was proposed so that all modeling parameters could be determined from a relatively limited amount of experimental data. Overall, model predictions were found to agree fairly well with experimental results for all loading histories considered. Finally, in order to evaluate life prediction procedures under realistic loading conditions, variable amplitude fatigue tests were performed using axial, torsion, and combined axial-torsion loading histories derived from recorded flight test data on the lower wing skin area of a military patrol aircraft (tension-dominated). While negligible improvements in life predictions were obtained through the consideration of transient material deformation behavior for these histories, crack initiation definition was found to have a slightly larger impact on prediction accuracy. As a result, when performing analyses using the modified FS damage parameter, transient stress-strain response, and a 0.2 mm crack initiation definition, nearly all variable amplitude fatigue lives, for un-notched and notched specimens, were predicted within a factor of 3 of experimental results. However, variable amplitude life predictions were still more non-conservative than those observed for constant amplitude loading conditions. Although there are numerous factors which could have contributed to this non-conservative tendency, it was determined that some of the error may have resulted from inaccuracies in life prediction curves, the modeling of material deformation behavior, the consideration of normal-shear stress/strain interaction effects, and/or linear versus nonlinear damage accumulation. In addition to crack initiation, fatigue crack growth behavior was also of interest for all tests performed in this study. Constant amplitude crack growth in notched specimens was observed to be a primarily mode I process, while cracks in un-notched specimens were observed to propagate on maximum shear planes, maximum tensile planes, or a combination of both. Specialized tests performed using precracked tubular specimens indicated that the preferred growth mode was dependent on friction and roughness induced closure effects at the crack interface. As a result, a simple model was proposed to account for frictional attenuation based on the idea that crack face interaction reduces the effective stress intensity factor (SIF) by allowing a portion of the nominally applied loading to be transferred through the crack interface. Crack path/branching, growth life, and growth rate predictions based on the proposed model were all shown to agree relatively well with the experimentally observed trends for all loading conditions considered. For notched specimen fatigue tests, although crack growth was observed to be mode I-dominated, constant amplitude crack growth rates under multiaxial nominal stress states were observed to be higher than those for uniaxial loading at the same SIF range. While T-stress corrections were able to account for this difference in some cases, growth rates for pure torsion loading still had the tendency to be higher than those for uniaxial loading. Additionally, using short crack models to account for stress concentration and initial crack geometry effects

Third International Conference on Biaxial multiaxial Fatigue

Third International Conference on Biaxial multiaxial Fatigue Book
Author : Anonim
Publisher : Unknown
Release : 1989
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

Download Third International Conference on Biaxial multiaxial Fatigue book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Computational Methods for Multiaxial Fatigue Analysis

Computational Methods for Multiaxial Fatigue Analysis Book
Author : Timothy E. Langlais
Publisher : Unknown
Release : 1999
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

Download Computational Methods for Multiaxial Fatigue Analysis book written by Timothy E. Langlais, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Third International Conference on Biaxial multiaxial Fatigue

Third International Conference on Biaxial multiaxial Fatigue Book
Author : Anonim
Publisher : Unknown
Release : 1989
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

Download Third International Conference on Biaxial multiaxial Fatigue book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Fatigue Assessment of Welded Joints by Local Approaches

Fatigue Assessment of Welded Joints by Local Approaches Book
Author : Dieter Radaj,C M Sonsino,W Fricke
Publisher : Woodhead Publishing
Release : 2006-11-13
ISBN : 9781855739482
Language : En, Es, Fr & De

GET BOOK

Book Description :

Local approaches to fatigue assessment are used to predict the structural durability of welded joints, to optimise their design and to evaluate unforeseen joint failures. This standard work provides a systematic survey of the principles and practical applications of the various methods. It covers the hot spot structural stress approach to fatigue in general, the notch stress and notch strain approach to crack initiation and the fracture mechanics approach to crack propagation. Seam-welded and spot-welded joints in structural steels and aluminium alloys are also considered. This completely reworked second edition takes into account the tremendous progress in understanding and applying local approaches which has been achieved in the last decade. It is a standard reference for designers, structural analysts and testing engineers who are responsible for the fatigue-resistant in-service behaviour of welded structures. Completely reworked second edition of a standard work providing a systematic survey of the principles and practical applications of the various methods Covers the hot spot structural stress approach to fatigue in general, the notch stress and notch strain approach to crack initiation and the fracture mechanics approach to crack propagation. Written by a distinguished team of authors

Advances in Fracture and Damage Mechanics VIII

Advances in Fracture and Damage Mechanics VIII Book
Author : Ferri M.H. Aliabadi,Stephen Abela,Sergio Baragetti,Mario Guagliano,Han Seung Lee
Publisher : Trans Tech Publications Ltd
Release : 2009-10-08
ISBN : 303813368X
Language : En, Es, Fr & De

GET BOOK

Book Description :

This special collection covers the latest theoretical, computational and experimental research on fracture and damage mechanics as well as on structural integrity and durability.

Cyclic plasticity modeling and multiaxial fatigue assessment for an austenitic steel

Cyclic plasticity modeling and multiaxial fatigue assessment for an austenitic steel Book
Author : Jie Fang
Publisher : Herbert Utz Verlag
Release : 2015-07-23
ISBN : 3831644845
Language : En, Es, Fr & De

GET BOOK

Book Description :

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.

Proceedings

Proceedings Book
Author : Japan Congress on Materials Research
Publisher : Unknown
Release : 1991
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

Download Proceedings book written by Japan Congress on Materials Research, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Biaxial and Multiaxial Fatigue EGF 3

Biaxial and Multiaxial Fatigue  EGF 3  Book
Author : M. W. Brown,K. J. Miller
Publisher : Wiley-Blackwell
Release : 1989
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

The 36 paper spresented in this volume were presented at the second international conference on biaxial/multiaxial fatigue.

Multiaxial Fatigue

Multiaxial Fatigue Book
Author : Keith John Miller,Michael W. Brown,M. W. Brown
Publisher : ASTM International
Release : 1985
ISBN : 9780803104440
Language : En, Es, Fr & De

GET BOOK

Book Description :

Download Multiaxial Fatigue book written by Keith John Miller,Michael W. Brown,M. W. Brown, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

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 Book
Author : W Fricke
Publisher : Woodhead Publishing
Release : 2012-10-22
ISBN : 085709856X
Language : En, Es, Fr & De

GET BOOK

Book Description :

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 Book
Author : Sreeramesh Kalluri,Peter J. Bonacuse
Publisher : ASTM International
Release : 2000-01-01
ISBN : 0803128657
Language : En, Es, Fr & De

GET BOOK

Book Description :

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,

European Journal of Mechanical and Environmental Engineering

European Journal of Mechanical and Environmental Engineering Book
Author : Anonim
Publisher : Unknown
Release : 1996
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

Download European Journal of Mechanical and Environmental Engineering book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Fatigue and Fracture Mechanics

Fatigue and Fracture Mechanics Book
Author : Anonim
Publisher : Unknown
Release : 2001
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

Download Fatigue and Fracture Mechanics book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Fatigue Under Biaxial and Multiaxial Loading ESIS Publication 10

Fatigue Under Biaxial and Multiaxial Loading  ESIS Publication 10  Book
Author : K. F. Kussmaul,D. L. McDiarmid,D. F. Socie
Publisher : Wiley-Blackwell
Release : 1991
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

A collection of papers from a conference which focuses on problems in biaxial and multiaxial fatigue research and the application of adequate design criteria to engineering solutions.