An Integrated Approach To Creep Fatigue Life Prediction

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An Integrated Approach to Creep-Fatigue Life Prediction

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Author : P. Agatonovic
Publisher :
ISBN 13 :
Total Pages : 19 pages
Book Rating : 4.:/5 (125 download)

Book Synopsis An Integrated Approach to Creep-Fatigue Life Prediction by : P. Agatonovic

Download or read book An Integrated Approach to Creep-Fatigue Life Prediction written by P. Agatonovic and published by . This book was released on 1988 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been special interest recently in developing new, reliable analytical design methods for components under higher temperature conditions. However, at present, the use of material properties is still limited to arrays of single characteristics which do not interact with each other. In this work, several creep fatigue experiments on smooth specimens of IN 800 H have been carried out at 830°C. In some tests, these have also been combined with inside hysteresis loops to investigate the different effects on deformation and damage behavior which originate in a creep and fatigue environment. As a result of these tests, it has been found that the material behavior under creep-fatigue conditions can be significantly changed compared to the material behavior under simple load conditions. Therefore there is a need for life analysis methods to be expanded to include possible variations in properties; for greater accuracy, the material properties must be treated as a complex interacting system of parameters. The examination has been extended to a typical component used under high-temperature conditions. The results of the numerical analysis show that the stress-strain history in the critical area of that component is not simply strain controlled, as it is in the typical laboratory creep-fatigue interaction life test containing a tensile or compressive dwell at constant peak strain level. At high temperatures, the conditions in the component are more severe, causing the life to be reduced compared with the typical laboratory test. In this paper, these conditions are successfully simulated with the help of a generalized Neuber law: ? . ?p = constant. Based on this ratio, the engineering method for evaluating component geometry and loading conditions and their effects on material behavior can be established.

Low Cycle Fatigue

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Author : Harvey D. Solomon
Publisher : ASTM International
ISBN 13 : 080310944X
Total Pages : 1289 pages
Book Rating : 4.8/5 (31 download)

Book Synopsis Low Cycle Fatigue by : Harvey D. Solomon

Download or read book Low Cycle Fatigue written by Harvey D. Solomon and published by ASTM International. This book was released on 1988 with total page 1289 pages. Available in PDF, EPUB and Kindle. Book excerpt:

ASTM Special Technical Publication

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Author :
Publisher :
ISBN 13 :
Total Pages : 1322 pages
Book Rating : 4.X/5 (4 download)

Book Synopsis ASTM Special Technical Publication by :

Download or read book ASTM Special Technical Publication written by and published by . This book was released on 1988 with total page 1322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Prediction of the Creep-Fatigue Lifetime of Alloy 617

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Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (967 download)

Book Synopsis Prediction of the Creep-Fatigue Lifetime of Alloy 617 by :

Download or read book Prediction of the Creep-Fatigue Lifetime of Alloy 617 written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A relatively simple method using the nominal constant average stress information and the creep rupture model is developed to predict the creep-fatigue lifetime of Alloy 617, in terms of time to rupture. The nominal constant average stress is computed using the stress relaxation curve. The predicted time to rupture can be converted to number of cycles to failure using the strain range, the strain rate during each cycle, and the hold time information. The predicted creep-fatigue lifetime is validated against the experimental measurements of the creep-fatigue lifetime collected using conventional laboratory creep-fatigue tests. High temperature creep-fatigue tests of Alloy 617 were conducted in air at 950°C with a tensile hold period of up to 1800s in a cycle at total strain ranges of 0.3% and 0.6%. It was observed that the proposed method is conservative in that the predicted lifetime is less than the experimentally determined values. The approach would be relevant to calculate the remaining useful life to a component like a steam generator that might fail by the creep-fatigue mechanism.

Mechanical Behaviour of Materials V

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Author : M. G. Yan
Publisher : Elsevier
ISBN 13 : 1483294129
Total Pages : 1451 pages
Book Rating : 4.4/5 (832 download)

Book Synopsis Mechanical Behaviour of Materials V by : M. G. Yan

Download or read book Mechanical Behaviour of Materials V written by M. G. Yan and published by Elsevier. This book was released on 2013-10-22 with total page 1451 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a thorough up-to-date account of the latest developments in materials science and engineering research and applications. The contributed papers cover all aspects of this important field, including material aspects of fracture in engineering practice, fatigue criteria and material characterisation, environmental effects on fracture, high temperature deformation and failure and mechanical properties and engineering applications of composite and non-metallic materials. Contains approximately 200 papers from acknowledged experts.

Behavior of Materials Under Conditions of Thermal Stress

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Author : S. S. Manson
Publisher :
ISBN 13 :
Total Pages : 730 pages
Book Rating : 4.F/5 ( download)

Book Synopsis Behavior of Materials Under Conditions of Thermal Stress by : S. S. Manson

Download or read book Behavior of Materials Under Conditions of Thermal Stress written by S. S. Manson and published by . This book was released on 1953 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review is presented of available information on the behavior of brittle and ductile materials under conditions of thermal stress and thermal shock. For brittle materials, a simple formula relating physical properties to thermal-shock resistance are derived and used to determine the relative significance of two indices currently in use for rating materials. The importance of simulating operating conditions in thermal-shock testing is deduced from the formula and is experimentally illustrated by showing that BeO could be both inferior or superior to Al2O3 in thermal shock depending on the testing conditions. For ductile materials, thermal-shock resistance depends upon the complex interrelation among several metallurgical variables which seriously affect strength and ductility. These variables are briefly discussed and illustrated from literature sources. The importance of simulating operating conditions in tests for rating ductile materials is especially to be emphasized because of the importance of testing conditions in metallurgy. A number of practical methods that have been used to minimize the deleterious effects of thermal stress and thermal shock are outlined.

Fatigue Life Prediction of Composites and Composite Structures

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Author : Anastasios P. Vassilopoulos
Publisher : Woodhead Publishing
ISBN 13 : 0081025769
Total Pages : 766 pages
Book Rating : 4.0/5 (81 download)

Book Synopsis Fatigue Life Prediction of Composites and Composite Structures by : Anastasios P. Vassilopoulos

Download or read book Fatigue Life Prediction of Composites and Composite Structures written by Anastasios P. Vassilopoulos and published by Woodhead Publishing. This book was released on 2019-10-08 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue Life Prediction of Composites and Composite Structures, Second Edition, is a comprehensive review of fatigue damage and fatigue life modeling and prediction methodologies for composites and their use in practice. In this new edition, existing chapters are fully updated, while new chapters are introduced to cover the most recent developments in the field. The use of composites is growing in structural applications in many industries, including aerospace, marine, wind turbine and civil engineering. However, there are uncertainties about their long-term performance, including performance issues relating to cyclic fatigue loading that hinder the adoption of a commonly accepted credible fatigue design methodology for the life prediction of composite engineering structures. With its distinguished editor and international team of contributors, this book is a standard reference for industry professionals and researchers alike. Examines past, present and future trends associated with the fatigue life prediction of composite materials and structures Assesses novel computational methods for fatigue life modeling and prediction of composite materials under constant amplitude loading Covers a wide range of techniques for predicting fatigue, including their theoretical background and practical applications Addresses new topics and covers contemporary research developments in the field

Evaluation of the Effect of Creep and Mean Stress on Fatigue Life Using a Damage Mechanics Approach

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Author : NM. Abuelfoutouh
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (125 download)

Book Synopsis Evaluation of the Effect of Creep and Mean Stress on Fatigue Life Using a Damage Mechanics Approach by : NM. Abuelfoutouh

Download or read book Evaluation of the Effect of Creep and Mean Stress on Fatigue Life Using a Damage Mechanics Approach written by NM. Abuelfoutouh and published by . This book was released on 1992 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method for fatigue life prediction of high temperature polycrystalline materials under high rate fully reversed strain cycles (HRSC) was previously derived using a continuum damage mechanics approach. The method is generalized in this paper to predict the fatigue life of balanced cyclic creep rupture (BCCR), tensile cyclic creep rupture (TCCR), and compressive cyclic creep rupture (CCCR). It is assumed that creep deformation mechanisms dominate during the creep portion of the fatigue cycle and that plasticity mechanisms dominate during the plastic portion of the cycle. The interaction of plasticity and creep with the mean applied stress and the effect of this interaction on the fatigue life are investigated. A sample calculation is applied to René 80 at 1255 K (1800°F).

Fatigue Damage, Crack Growth and Life Prediction

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Author : F. Ellyin
Publisher : Springer Science & Business Media
ISBN 13 : 0412596008
Total Pages : 490 pages
Book Rating : 4.4/5 (125 download)

Book Synopsis Fatigue Damage, Crack Growth and Life Prediction by : F. Ellyin

Download or read book Fatigue Damage, Crack Growth and Life Prediction written by F. Ellyin and published by Springer Science & Business Media. This book was released on 1996-11-30 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue failure is a multi-stage process. It begins with the initiation of cracks, and with continued cyclic loading the cracks propagate, finally leading to the rupture of a component or specimen. The demarcation between the above stages is not well-defined. Depending upon the scale of interest, the variation may span three orders of magnitude. For example, to a material scientist an initiated crack may be of the order of a micron, whereas for an engineer it can be of the order of a millimetre. It is not surprising therefore to see that investigation of the fatigue process has followed different paths depending upon the scale of phenomenon under investigation. Interest in the study of fatigue failure increased with the advent of industrial ization. Because of the urgent need to design against fatigue failure, early investiga tors focused on prototype testing and proposed failure criteria similar to design formulae. Thus, a methodology developed whereby the fatigue theories were proposed based on experimental observations, albeit at times with limited scope. This type of phenomenological approach progressed rapidly during the past four decades as closed-loop testing machines became available.

Advances in Fatigue Lifetime Predictive Techniques

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Author : Michael R. Mitchell
Publisher : ASTM International
ISBN 13 : 0803114230
Total Pages : 495 pages
Book Rating : 4.8/5 (31 download)

Book Synopsis Advances in Fatigue Lifetime Predictive Techniques by : Michael R. Mitchell

Download or read book Advances in Fatigue Lifetime Predictive Techniques written by Michael R. Mitchell and published by ASTM International. This book was released on 1992 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twenty-seven papers from fatigue researchers and practitioners review in detail recent progress in the development of methods to predict fatigue performance of materials and structures and to assess the extent to which these new methods are finding their way into practice. The papers, from the ASTM

Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials—3

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Author : K.T. Rie
Publisher : Springer Science & Business Media
ISBN 13 : 940112860X
Total Pages : 911 pages
Book Rating : 4.4/5 (11 download)

Book Synopsis Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials—3 by : K.T. Rie

Download or read book Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials—3 written by K.T. Rie and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 911 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceeds of the Third International Conference on Low Cycle Fatigue and Elasto-plastic Behaviour of Materials, Berlin Congress Center, Berlin, Germany, 7-11 September 1992

Advances in Multiaxial Fatigue

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Author : David L. McDowell
Publisher : ASTM International
ISBN 13 : 0803118627
Total Pages : 455 pages
Book Rating : 4.8/5 (31 download)

Book Synopsis Advances in Multiaxial Fatigue by : David L. McDowell

Download or read book Advances in Multiaxial Fatigue written by David L. McDowell and published by ASTM International. This book was released on 1993 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Scientific and Technical Aerospace Reports

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Author :
Publisher :
ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.:/5 (31 download)

Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Comprehensive Structural Integrity

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Author : Ian Milne
Publisher : Elsevier
ISBN 13 : 0080490735
Total Pages : 4647 pages
Book Rating : 4.0/5 (84 download)

Book Synopsis Comprehensive Structural Integrity by : Ian Milne

Download or read book Comprehensive Structural Integrity written by Ian Milne and published by Elsevier. This book was released on 2003-07-25 with total page 4647 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this major reference work is to provide a first point of entry to the literature for the researchers in any field relating to structural integrity in the form of a definitive research/reference tool which links the various sub-disciplines that comprise the whole of structural integrity. Special emphasis will be given to the interaction between mechanics and materials and structural integrity applications. Because of the interdisciplinary and applied nature of the work, it will be of interest to mechanical engineers and materials scientists from both academic and industrial backgrounds including bioengineering, interface engineering and nanotechnology. The scope of this work encompasses, but is not restricted to: fracture mechanics, fatigue, creep, materials, dynamics, environmental degradation, numerical methods, failure mechanisms and damage mechanics, interfacial fracture and nano-technology, structural analysis, surface behaviour and heart valves. The structures under consideration include: pressure vessels and piping, off-shore structures, gas installations and pipelines, chemical plants, aircraft, railways, bridges, plates and shells, electronic circuits, interfaces, nanotechnology, artificial organs, biomaterial prostheses, cast structures, mining... and more. Case studies will form an integral part of the work.

NASA Technical Memorandum

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Author :
Publisher :
ISBN 13 :
Total Pages : 492 pages
Book Rating : 4.:/5 (319 download)

Book Synopsis NASA Technical Memorandum by :

Download or read book NASA Technical Memorandum written by and published by . This book was released on 1994 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Engine Structures

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Author :
Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.F/5 ( download)

Book Synopsis Engine Structures by :

Download or read book Engine Structures written by and published by . This book was released on 1988 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A study on creep-fatigue life prediction using simple high temperature low cycle fatigue testing machines

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Author : Tadayoshi Endo
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (354 download)

Book Synopsis A study on creep-fatigue life prediction using simple high temperature low cycle fatigue testing machines by : Tadayoshi Endo

Download or read book A study on creep-fatigue life prediction using simple high temperature low cycle fatigue testing machines written by Tadayoshi Endo and published by . This book was released on 1983 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: