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Fatigue Life Estimation Of Notched Members
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Book Synopsis Fatigue Life Estimation of Notched Members by : NE. Dowling
Download or read book Fatigue Life Estimation of Notched Members written by NE. Dowling and published by . This book was released on 1984 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: From an engineering view, it is convenient to separate the total fatigue life of notched members into two portions: crack initiation, which is spent nucleating and growing small cracks, and the crack propagation life, which is spent growing these cracks to final fracture. The difficulty in applying this concept has been in defining the size of an initiated crack in a smooth specimen and dealing with small crack growth in the plastic zone near the notch root.
Author :ASTM Committee E-24 on Fracture Testing Publisher :ASTM International ISBN 13 :9780803102088 Total Pages :761 pages Book Rating :4.1/5 (2 download)
Book Synopsis Fracture Mechanics by : ASTM Committee E-24 on Fracture Testing
Download or read book Fracture Mechanics written by ASTM Committee E-24 on Fracture Testing and published by ASTM International. This book was released on 1984 with total page 761 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theory of Notch Stresses by : Heinz Neuber
Download or read book Theory of Notch Stresses written by Heinz Neuber and published by . This book was released on 1946 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Turbine Blade Life Estimation by : J. S. Rao
Download or read book Turbine Blade Life Estimation written by J. S. Rao and published by Alpha Science Int'l Ltd.. This book was released on 2000 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: The blade life estimation is a multifaceted technology, involving free and forced vibration forces, that lead to the determination of steady and dynamic stresses at different critical speeds during the startup and shutdown procedures, as well as in the operational speed range. Propagation and unstable fracture are described with practical examples to estimate blade life.
Book Synopsis Fatigue Strength Calculation by : A. Buch
Download or read book Fatigue Strength Calculation written by A. Buch and published by . This book was released on 1988 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optimal design using advanced materials is an ever more progressive and challenging domain within applied mechanics. Here is an invaluable self-contained source of information concerning methods of calculation of fatigue limits and lifetimes of structural elements.
Book Synopsis Effect of Notches on Low-cycle Fatigue by : B. M. Wundt
Download or read book Effect of Notches on Low-cycle Fatigue written by B. M. Wundt and published by ASTM International. This book was released on 1972 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Theory of Critical Distances by : David Taylor
Download or read book The Theory of Critical Distances written by David Taylor and published by Elsevier. This book was released on 2010-07-07 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Critical distance methods are extremely useful for predicting fracture and fatigue in engineering components. They also represent an important development in the theory of fracture mechanics. Despite being in use for over fifty years in some fields, there has never been a book about these methods – until now. So why now? Because the increasing use of computer-aided stress analysis (by FEA and other techniques) has made these methods extremely easy to use in practical situations. This is turn has prompted researchers to re-examine the underlying theory with renewed interest. The Theory of Critical Distances begins with a general introduction to the phenomena of mechanical failure in materials: a basic understanding of solid mechanics and materials engineering is assumed, though appropriate introductory references are provided where necessary. After a simple explanation of how to use critical distance methods, and a more detailed exposition of the methods including their history and classification, the book continues by showing examples of how critical distance approaches can be applied to predict fracture and fatigue in different classes of materials. Subsequent chapters include some more complex theoretical areas, such as multiaxial loading and contact problems, and a range of practical examples using case studies of real engineering components taken from the author’s own consultancy work. The Theory of Critical Distances will be of interest to a range of readers, from academic researchers concerned with the theoretical basis of the subject, to industrial engineers who wish to incorporate the method into modern computer-aided design and analysis. Comprehensive collection of published data, plus new data from the author's own laboratories A simple 'how-to-do-it' exposition of the method, plus examples and case studies Detailed theoretical treatment Covers all classes of materials: metals, polymers, ceramics and composites Includes fracture, fatigue, fretting, size effects and multiaxial loading
Book Synopsis Notch Effects in Fatigue and Fracture by : G. Pluvinage
Download or read book Notch Effects in Fatigue and Fracture written by G. Pluvinage and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: As Directors of this NATO Workshop, we welcome this opportunity to record formally our thanks to the NATO Scientific Affairs Division for making our meeting possible through generous financial support and encouragement. This meeting has two purposes: the first obvious one because we have collected scientists from East, far East and west to discuss new development in the field of fracture mechanics: the notch fracture mechanics. The second is less obvious but perhaps in longer term more important that is the building of bridges between scientists in the frame of a network called Without Walls Institute on Notch Effects in Fatigue and Fracture". Physical perception of notch effects is not so easy to understand as the presence of a geometrical discontinuity as a worst effect than the simple reduction of cross section. Notch effects in fatigue and fracture is characterised by the following fundamental fact: it is not the maximum local stress or stress which governs the phenomena of fatigue and fracture. The physic shows that a process volume is needed probably to store the necessary energy for starting and propagating the phenomenon. This is a rupture of the traditional "strength of material" school which always give the prior importance of the local maximum stress. This concept of process volume was strongly affirmed during this workshop.
Book Synopsis Local Stress-strain Approach to Cumulative Fatigue Damage Analysis by : JoDean Morrow
Download or read book Local Stress-strain Approach to Cumulative Fatigue Damage Analysis written by JoDean Morrow and published by . This book was released on 1974 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: A cumulative fatigue damage procedure for estimating the fatigue crack initiation life of notched structural members subjected to known load histories is outlined. This procedure assumes that a knowledge of the local cyclic stress-strain response of the metal at the most severely strained region in a member is sufficient to predict when a crack will form there. Some of the steps in this procedure that are of current interest and which are especially applicable to a local stress-strain approach are discussed. Alternative, approximate and/or abbreviated steps in the cumulative fatigue damage procedure are given wherever possible. Limitations of the method and areas where research is needed are pointed out. Cumulative fatigue test results for smooth specimens, notched plates and built-up box beams are compared to life calculations made using the local stress-strain approach. Cyclic deformation and fracture properties, used in the analysis, were obtained from tests on a limited number of axially loaded unnotched specimens. These examples indicate that a cumulative fatigue damage analysis based on the local stress-strain approach employing a minimum amount of materials test data can be used to make reasonable life estimates for members similar to many practical structural members. (Modified author abstract).
Book Synopsis EFFECTS OF NOTCHES ON LOW-CYCLE FATIGUE A Literature Survey by : B. M. Wundt
Download or read book EFFECTS OF NOTCHES ON LOW-CYCLE FATIGUE A Literature Survey written by B. M. Wundt and published by ASTM International. This book was released on with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Techniques for Smooth Specimen Simulation of the Fatigue Behavior of Notched Members by : J. Morrow
Download or read book Techniques for Smooth Specimen Simulation of the Fatigue Behavior of Notched Members written by J. Morrow and published by . This book was released on 1972 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The initiation of fatigue cracks in a notched member is determined by the local cyclic stress and strain at the notch root. A relationship, proposed by Neuber, is used to relate the notch root stress-strain response to the nominal stress in the notched member. Further, several methods based on Neuber's rule allow a smooth cylindrical specimen to be used to simulate the stress-strain behavior of the notch root metal. The fatigue life of the smooth specimen is shown to furnish a satisfactory estimate of the fatigue life of the notched member, and the stress-strain plot of the smooth specimen is useful in understanding the local effects on the notch root metal of various nominal load histories. Results are reported for notched specimens subjected to variable load histories and for the corresponding smooth specimen simulations for 2024-T4 and 7075-T6 aluminum, aircraft quality 4340 steel, and Ti-8Al-1Mo-1V.
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.
Download or read book Fatigue Data Handbook written by A. Buch and published by Trans Tech Publications Ltd. This book was released on 1998-03-17 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This authoritative handbook presents an extensive compilation of data covering all important fatigue situations - fatigue strength of steels and other materials, notch- , size-, and mean stress effects, influence of temperature and corrosion, influence of special surface treatments, fatigue of structural elements and welds, aircraft fatigue, multilevel loading test programs, fatigue performance prediction etc.As is well known, fatigue investigations are often extremely time-consuming. The results of the tests depend upon numerous factors, and therefore handbook data must include all of the parameters which affect reported test results. The calculation of fatigue life and strength cannot be performed without having appropriate information concerning the specific fatigue situation. Nor can test programs be properly prepared without knowing the service conditions and the results of previous tests as, otherwise, the results obtained cannot be generalized. Information on component fatigue behaviour is of importance not only to machine designers but also to production engineers in charge of component manufacture, since processing strongly affects fatigue strength, and to maintenance engineers in charge of the operation and repair of cyclically loaded machine elements.
Book Synopsis Low-cycle Fatigue and Life Prediction by : Claude Amzallag
Download or read book Low-cycle Fatigue and Life Prediction written by Claude Amzallag and published by ASTM International. This book was released on 1982 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fatigue Life Analyses of Welded Structures by : Tom Lassen
Download or read book Fatigue Life Analyses of Welded Structures written by Tom Lassen and published by John Wiley & Sons. This book was released on 2013-03-01 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Avoiding or controlling fatigue damage is a major issue in the design and inspection of welded structures subjected to dynamic loading. Life predictions are usually used for safe life analysis, i.e. for verifying that it is very unlikely that fatigue damage will occur during the target service life of a structure. Damage tolerance analysis is used for predicting the behavior of a fatigue crack and for planning of in-service scheduled inspections. It should be a high probability that any cracks appearing are detected and repaired before they become critical. In both safe life analysis and the damage tolerance analysis there may be large uncertainties involved that have to be treated in a logical and consistent manner by stochastic modeling. This book focuses on fatigue life predictions and damage tolerance analysis of welded joints and is divided into three parts. The first part outlines the common practice used for safe life and damage tolerance analysis with reference to rules and regulations. The second part emphasises stochastic modeling and decision-making under uncertainty, while the final part is devoted to recent advances within fatigue research on welded joints. Industrial examples that are included are mainly dealing with offshore steel structures. Spreadsheets which accompany the book give the reader the possibility for hands-on experience of fatigue life predictions, crack growth analysis and inspection planning. As such, these different areas will be of use to engineers and researchers.
Author :United States. National Aeronautics and Space Administration. Office of Reliability and Quality Assurance Publisher : ISBN 13 : Total Pages :580 pages Book Rating :4.F/5 ( download)
Book Synopsis Reliability Abstracts and Technical Reviews by : United States. National Aeronautics and Space Administration. Office of Reliability and Quality Assurance
Download or read book Reliability Abstracts and Technical Reviews written by United States. National Aeronautics and Space Administration. Office of Reliability and Quality Assurance and published by . This book was released on 1969 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Probabilistic Physics of Failure Approach to Reliability by : Mohammad Modarres
Download or read book Probabilistic Physics of Failure Approach to Reliability written by Mohammad Modarres and published by John Wiley & Sons. This book was released on 2017-06-23 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents highly technical approaches to the probabilistic physics of failure analysis and applications to accelerated life and degradation testing to reliability prediction and assessment. Beside reviewing a select set of important failure mechanisms, the book covers basic and advanced methods of performing accelerated life test and accelerated degradation tests and analyzing the test data. The book includes a large number of very useful examples to help readers understand complicated methods described. Finally, MATLAB, R and OpenBUGS computer scripts are provided and discussed to support complex computational probabilistic analyses introduced.
