The Introduction of Crack Opening Stress Modeling Into Strain-life and Small Crack Growth Fatigue Analysis

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ISBN 13 :
Total Pages : 158 pages
Book Rating : 4.:/5 (827 download)

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Book Synopsis The Introduction of Crack Opening Stress Modeling Into Strain-life and Small Crack Growth Fatigue Analysis by : Maria El Zeghayar

Download or read book The Introduction of Crack Opening Stress Modeling Into Strain-life and Small Crack Growth Fatigue Analysis written by Maria El Zeghayar and published by . This book was released on 2010 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work in this thesis is concerned with the mechanics of the initiation and growth of small fatigue cracks from notches under service load histories. Fatigue life estimates for components subjected to variable amplitude service loading are usually based on the same constant amplitude strain-life data used for constant amplitude fatigue life predictions. The resulting fatigue life estimates although they are accurate for constant amplitude fatigue, are always non conservative for variable amplitude load histories. Similarly fatigue life predictions based on small crack growth calculations for cracks growing from flaws in notches are non conservative when constant amplitude crack growth data are used. These non conservative predictions have, in both cases, been shown to be due to severe reductions in fatigue crack closure arising from large (overload or underload) cycles in a typical service load history. Smaller load cycles following a large near yield stress overload or underload cycle experience a much lower crack opening stress than that experienced by the same cycles in the reference constant amplitude fatigue tests used to produce design data. This reduced crack opening stress results in the crack remaining open for a larger fraction of the stress-strain cycle and thus an increase in the effective portion of the stress-strain cycle. The effective strain range is increased and the fatigue damage for the small cycles is greater than that calculated resulting in a non conservative fatigue life prediction. Previous work at Waterloo introduced parameters based on effective strain-life fatigue data and effective stress intensity versus crack growth rate data. Fatigue life calculations using these parameters combined with experimentally derived crack opening stress estimates give accurate fatigue life predictions for notched components subjected to variable amplitude service load histories. Information concerning steady state crack closure stresses, effective strain-life data, and effective stress intensity versus small crack growth rate data, are all obtained from relatively simple and inexpensive fatigue tests of smooth specimens in which periodic underloads are inserted into an otherwise constant amplitude load history. The data required to calibrate a variable amplitude fatigue crack closure model however, come from time consuming measurements of the return of crack closure levels for small cracks to a steady state level following an underload (large cracks for which crack closure measurements are easier to make cannot be used because at the high stress levels in notches under service loads a test specimen used would fracture).

Fatigue Life and Crack Growth Prediction Methodology

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Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Fatigue Life and Crack Growth Prediction Methodology by : J. C. Newman (Jr)

Download or read book Fatigue Life and Crack Growth Prediction Methodology written by J. C. Newman (Jr) and published by . This book was released on 1993 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fatigue Crack Growth

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Publisher : Springer
ISBN 13 : 3319325345
Total Pages : 305 pages
Book Rating : 4.3/5 (193 download)

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Book Synopsis Fatigue Crack Growth by : Hans Albert Richard

Download or read book Fatigue Crack Growth written by Hans Albert Richard and published by Springer. This book was released on 2016-06-13 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a concise introduction to fatigue crack growth, based on practical examples. It discusses the essential concepts of fracture mechanics, fatigue crack growth under constant and variable amplitude loading and the determination of the fracture-mechanical material parameters. The book also introduces the analytical and numerical simulation of fatigue crack growth as well as crack initiation. It concludes with a detailed description of several practical case studies and some exercises. The target group includes graduate students, researchers at universities and practicing engineers.

Fundamentals of Aluminium Metallurgy

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Publisher : Elsevier
ISBN 13 : 0857090259
Total Pages : 862 pages
Book Rating : 4.8/5 (57 download)

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Book Synopsis Fundamentals of Aluminium Metallurgy by : Roger Lumley

Download or read book Fundamentals of Aluminium Metallurgy written by Roger Lumley and published by Elsevier. This book was released on 2010-11-25 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aluminium is an important metal in manufacturing, due to its versatile properties and the many applications of both the processed metal and its alloys in different industries. Fundamentals of aluminium metallurgy provides a comprehensive overview of the production, properties and processing of aluminium, and its applications in manufacturing industries. Part one discusses different methods of producing and casting aluminium, covering areas such as casting of alloys, quality issues and specific production methods such as high-pressure diecasting. The metallurgical properties of aluminium and its alloys are reviewed in Part two, with chapters on such topics as hardening, precipitation processes and solute partitioning and clustering, as well as properties such as fracture resistance. Finally, Part three includes chapters on joining, laser sintering and other methods of processing aluminium, and its applications in particular areas of industry such as aerospace. With its distinguished editor and team of expert contributors, Fundamentals of aluminium metallurgy is a standard reference for researchers in metallurgy, as well as all those involved in the manufacture and use of aluminium products. Provides a comprehensive overview of the production, properties and processing of aluminium, and its applications in manufacturing industries Considers many issues of central importance in aluminium production and utilization considering quality issues and design for fatigue growth resistance Metallurgical properties of aluminium and its alloys are further explored with particular reference to work hardening and applications of industrial alloys

The Life of Cracks

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Publisher : Cambridge Scholars Publishing
ISBN 13 : 1527556549
Total Pages : 175 pages
Book Rating : 4.5/5 (275 download)

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Book Synopsis The Life of Cracks by : Srečko Glodež

Download or read book The Life of Cracks written by Srečko Glodež and published by Cambridge Scholars Publishing. This book was released on 2020-07-13 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many people find the concept of fracture and damage mechanics to be somewhat problematic, mainly because, until recently, close attention in mechanics was focused especially on the strength and resistance of materials. In this sense, to speak of fracture is as uncomfortable for some as it is to speak of a deadly disease. In confronting and preventing a fatal disease, one must understand its complexity, symptoms, and behavior; by the same token, in securing the strength of an engineering structure, one must understand the reasons and type of its potential failure. This book will provide knowledge and insights on this matter to its readers.

Fatigue Crack Propagation in Metals and Alloys

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Publisher : John Wiley & Sons
ISBN 13 : 3527610677
Total Pages : 311 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Fatigue Crack Propagation in Metals and Alloys by : Ulrich Krupp

Download or read book Fatigue Crack Propagation in Metals and Alloys written by Ulrich Krupp and published by John Wiley & Sons. This book was released on 2007-06-27 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive overview of the whole field of fatigue and fracture of metallic materials covers both the theoretical background and some of the latest experimental techniques. It provides a summary of the complex interactions between material microstructure and cracks, classifying them with respect to the overall damage process with a focus on microstructurally short cracks and dynamic embrittlement. It furthermore introduces new concepts for the numerical treatment of fatigue microcrack propagation and their implementation in fatigue-life prediction models.This comprehensive overview of the whole field of fatigue and fracture of metallic materials covers both the theoretical background and the latest experimental techniques. It provides a summary of the complex interactions between material microstructure and cracks, classifying them with respect to the overall damage process. It furthermore introduces new concepts for the numerical treatment of fatigue microcrack propagation and their implementation in fatigue-life prediction models.

Mechanics of Fatigue Crack Closure

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Publisher : ASTM International
ISBN 13 : 0803109962
Total Pages : 671 pages
Book Rating : 4.8/5 (31 download)

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Book Synopsis Mechanics of Fatigue Crack Closure by : Wolf Elber

Download or read book Mechanics of Fatigue Crack Closure written by Wolf Elber and published by ASTM International. This book was released on 1988 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Comprehensive Structural Integrity: Cyclic loading and fatigue

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Publisher : Elsevier
ISBN 13 : 0080441556
Total Pages : 539 pages
Book Rating : 4.0/5 (84 download)

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Book Synopsis Comprehensive Structural Integrity: Cyclic loading and fatigue by : I. Milne

Download or read book Comprehensive Structural Integrity: Cyclic loading and fatigue written by I. Milne and published by Elsevier. This book was released on 2003 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scientific and Technical Aerospace Reports

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Publisher :
ISBN 13 :
Total Pages : 702 pages
Book Rating : 4.:/5 (31 download)

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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 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Applied mechanics reviews

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ISBN 13 :
Total Pages : 400 pages
Book Rating : 4.3/5 (243 download)

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Book Synopsis Applied mechanics reviews by :

Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fracture Mechanics

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Publisher : Trans Tech Publications Ltd
ISBN 13 : 3038133450
Total Pages : 124 pages
Book Rating : 4.0/5 (381 download)

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Book Synopsis Fracture Mechanics by : Alexander Balankin

Download or read book Fracture Mechanics written by Alexander Balankin and published by Trans Tech Publications Ltd. This book was released on 2010-09-06 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work comprises selected peer-reviewed papers on the topic of, “Fracture Mechanics”. Volume is indexed by Thomson Reuters CPCI-S (WoS). The volume covers topics related to all aspects of the mechanics and phenomena of fracture, fatigue, fracture mechanics approach, strength of materials, failure analysis and general structural integrity. The aim of this collection was to bring together state-of-the-art developments related to fracture mechanics and in this it has succeeded admirably.

Stochastic Modeling of Crack Initiation and Short-crack Growth Under Creep and Creep-fatigue Conditions

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ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Stochastic Modeling of Crack Initiation and Short-crack Growth Under Creep and Creep-fatigue Conditions by :

Download or read book Stochastic Modeling of Crack Initiation and Short-crack Growth Under Creep and Creep-fatigue Conditions written by and published by . This book was released on 1989 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Small Fatigue Cracks

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Publisher : Elsevier
ISBN 13 : 0080569706
Total Pages : 511 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Small Fatigue Cracks by : K.S. Ravichandran

Download or read book Small Fatigue Cracks written by K.S. Ravichandran and published by Elsevier. This book was released on 1999-09-30 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the fully peer-reviewed papers presented at the Third Engineering Foundation Conference on Small Fatigue Cracks, held under the chairmanship of K.S. Ravichandran and Y. Murakami during December 6-11, 1998, at the Turtle Bay Hilton, Oahu, Hawaii. This book presents a state-of-the-art description of the mechanics, mechanisms and applications of small fatigue cracks by most of the world's leading experts in this field. Topics ranging from the mechanisms of crack initiation, small crack behavior in metallic, intermetallic, ceramic and composite materials, experimental measurement, mechanistic and theoretical models, to the role of small cracks in fretting fatigue and the application of small crack results to the aging aircraft and high-cycle fatigue problems, are covered.

Mathematical Modeling and Numerical Simulation in Continuum Mechanics

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Publisher : Springer Science & Business Media
ISBN 13 : 3642562884
Total Pages : 300 pages
Book Rating : 4.6/5 (425 download)

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Book Synopsis Mathematical Modeling and Numerical Simulation in Continuum Mechanics by : Ivo Babuska

Download or read book Mathematical Modeling and Numerical Simulation in Continuum Mechanics written by Ivo Babuska and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first international symposium on mathematical foundations of the finite element method was held at the University of Maryland in 1973. During the last three decades there has been great progress in the theory and practice of solving partial differential equations, and research has extended in various directions. Full-scale nonlinear problems have come within the range of nu merical simulation. The importance of mathematical modeling and analysis in science and engineering is steadily increasing. In addition, new possibili ties of analysing the reliability of computations have appeared. Many other developments have occurred: these are only the most noteworthy. This book is the record of the proceedings of the International Sympo sium on Mathematical Modeling and Numerical Simulation in Continuum Mechanics, held in Yamaguchi, Japan from 29 September to 3 October 2000. The topics covered by the symposium ranged from solids to fluids, and in cluded both mathematical and computational analysis of phenomena and algorithms. Twenty-one invited talks were delivered at the symposium. This volume includes almost all of them, and expresses aspects of the progress mentioned above. All the papers were individually refereed. We hope that this volume will be a stepping-stone for further developments in this field.

Surface-crack Growth

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Publisher : ASTM International
ISBN 13 : 080311284X
Total Pages : 428 pages
Book Rating : 4.8/5 (31 download)

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Book Synopsis Surface-crack Growth by : Walter G. Reuter

Download or read book Surface-crack Growth written by Walter G. Reuter and published by ASTM International. This book was released on 1990 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the symposium (on title) held in Sparks, Nevada, April 1988. Twenty-two peer-reviewed papers are divided into sections on models and experiments (monotonic loading), and fatigue crack growth. Areas addressed include the differences in constraint for 2-D through-thickness cracks and 3-D surface

Fatigue of Materials

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Publisher : Cambridge University Press
ISBN 13 : 1139643304
Total Pages : 708 pages
Book Rating : 4.1/5 (396 download)

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Book Synopsis Fatigue of Materials by : S. Suresh

Download or read book Fatigue of Materials written by S. Suresh and published by Cambridge University Press. This book was released on 1998-10-29 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by a leading researcher in the field, this revised and updated second edition of a highly successful book provides an authoritative, comprehensive and unified treatment of the mechanics and micromechanisms of fatigue in metals, non-metals and composites. The author discusses the principles of cyclic deformation, crack initiation and crack growth by fatigue, covering both microscopic and continuum aspects. The book begins with discussions of cyclic deformation and fatigue crack initiation in monocrystalline and polycrystalline ductile alloys as well as in brittle and semi-/non-crystalline solids. Total life and damage-tolerant approaches are then introduced in metals, non-metals and composites followed by more advanced topics. The book includes an extensive bibliography and a problem set for each chapter, together with worked-out example problems and case studies. This will be an important reference for anyone studying fracture and fatigue in materials science and engineering, mechanical, civil, nuclear and aerospace engineering, and biomechanics.

Fatigue of Materials

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Publisher : Cambridge University Press
ISBN 13 : 9780521578479
Total Pages : 708 pages
Book Rating : 4.5/5 (784 download)

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Book Synopsis Fatigue of Materials by : Subra Suresh

Download or read book Fatigue of Materials written by Subra Suresh and published by Cambridge University Press. This book was released on 1998-10-29 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by a leading researcher in the field, this revised and updated second edition of a highly successful book provides an authoritative, comprehensive and unified treatment of the mechanics and micromechanisms of fatigue in metals, non-metals and composites. The author discusses the principles of cyclic deformation, crack initiation and crack growth by fatigue, covering both microscopic and continuum aspects. The book begins with discussions of cyclic deformation and fatigue crack initiation in monocrystalline and polycrystalline ductile alloys as well as in brittle and semi-/non-crystalline solids. Total life and damage-tolerant approaches are then introduced in metals, non-metals and composites followed by more advanced topics. The book includes an extensive bibliography and a problem set for each chapter, together with worked-out example problems and case studies. This will be an important reference for anyone studying fracture and fatigue in materials science and engineering, mechanical, civil, nuclear and aerospace engineering, and biomechanics.