Fissuration par fatigue et ténacité d'alliages d'aluminium 2xxx à 223K

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Publisher :
ISBN 13 :
Total Pages : 215 pages
Book Rating : 4.:/5 (492 download)

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Book Synopsis Fissuration par fatigue et ténacité d'alliages d'aluminium 2xxx à 223K by : Cédric Gasquères

Download or read book Fissuration par fatigue et ténacité d'alliages d'aluminium 2xxx à 223K written by Cédric Gasquères and published by . This book was released on 2006 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse concerne l'étude des mécanismes de propagation des fissures de fatigue dans des alliages légers type 2xxx (Al-Cu-Mg) utilisés pour les intrados d'ailes d'avions. Un nouveau dispositif expérimental a été réalisé pour conduire des essais sous divers environnements - vide secondaire, air ambiant, air sec (point de rosée de -50°C) et air sec et froid – en opérant sous humidité résiduelle et température simulant l'atmosphère à une altitude de 10 Km. Un effet important de l'environnement a été mis en évidence sous air froid avec des vitesses de fissuration 20 fois plus lentes qu'à l'air ambiant sur les alliages mûris à l'ambiante. Par contre aucun effet n'est observé sur les alliages revenus au pic de dureté. Ces effets sont reliés à un chemin de propagation de nature cristallographique favorisé par les environnements très secs dans les états sous revenus qui génère des propagations ralenties induites par les effets de barrières aux joints de grain conjugués à des déviations et branchements des fissures. Les observations par microscopie électronique en transmission montrent une localisation de la déformation dans un système de plans de glissement unique dans chaque grain le long du front de fissure. Les mécanismes associés aux différents environnements sont décrits à l'aide d'un modèle préexistant pour les alliages métalliques. Finalement, un modèle de zone cohésive est développé pour décrire la propagation des fissures de fatigue dans les alliages légers à l'ambiante. Les simulations s'avèrent en bon accord avec les résultats expérimentaux. Sur le plan industriel, ces résultats montrent la possibilité d'accroître les estimations de durées de vie pour les vols à haute altitude en utilisant des alliages vieillis naturellement.

Fatigue of Materials and Structures

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Author :
Publisher : John Wiley & Sons
ISBN 13 : 1118623371
Total Pages : 415 pages
Book Rating : 4.1/5 (186 download)

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Book Synopsis Fatigue of Materials and Structures by : Claude Bathias

Download or read book Fatigue of Materials and Structures written by Claude Bathias and published by John Wiley & Sons. This book was released on 2013-03-04 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design of mechanical structures with improved and predictable durability cannot be achieved without a thorough understanding of the mechanisms of fatigue damage and more specifically the relationships between the microstructure of materials and their fatigue properties. Written by leading experts in the field, this book (which is complementary to Fatigue of Materials and Structures: Application to Damage and Design, also edited by Claude Bathias and André Pineau), provides an authoritative, comprehensive and unified treatment of the mechanics and micromechanisms of fatigue in metals, polymers and composites. Each chapter is devoted to one of the major classes of materials or to different types of fatigue damage, thereby providing overall coverage of the field. The book deals with crack initiation, crack growth, low-cycle fatigue, gigacycle fatigue, shorts cracks, fatigue micromechanisms and the local approach to fatigue damage, corrosion fatigue, environmental effects and variable amplitude loadings, and will be an important and much used reference for students, practicing engineers and researchers studying fracture and fatigue in numerous areas of mechanical, structural, civil, design, nuclear, and aerospace engineering as well as materials science.

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.

Environmentally Assisted Cracking

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Publisher : ASTM International
ISBN 13 : 0803112769
Total Pages : 540 pages
Book Rating : 4.8/5 (31 download)

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Book Synopsis Environmentally Assisted Cracking by : W. Barry Lisagor

Download or read book Environmentally Assisted Cracking written by W. Barry Lisagor and published by ASTM International. This book was released on 1990 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers included topics of phenomena, basic mechanisms, modeling, test methodologies, materials performance, engineering applications and service experience and failures and reflects the current emphasis with regard to material/environment systems.

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.

Basic Questions in Fatigue

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Publisher :
ISBN 13 : 9780803109254
Total Pages : 0 pages
Book Rating : 4.1/5 (92 download)

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Book Synopsis Basic Questions in Fatigue by : Jeffrey Tse-wei Fong

Download or read book Basic Questions in Fatigue written by Jeffrey Tse-wei Fong and published by . This book was released on 1988 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fatigue Mechanisms

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Publisher : ASTM International
ISBN 13 : 9780803103450
Total Pages : 936 pages
Book Rating : 4.1/5 (34 download)

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Book Synopsis Fatigue Mechanisms by : Jeffrey T. Fong

Download or read book Fatigue Mechanisms written by Jeffrey T. Fong and published by ASTM International. This book was released on 1979 with total page 936 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:

Small Fatigue Cracks

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Publisher : Tms
ISBN 13 : 9780873390521
Total Pages : 665 pages
Book Rating : 4.3/5 (95 download)

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Book Synopsis Small Fatigue Cracks by : Robert O. Ritchie

Download or read book Small Fatigue Cracks written by Robert O. Ritchie and published by Tms. This book was released on 1986-01-01 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Titanium Alloys at Elevated Temperature

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Publisher : CRC Press
ISBN 13 :
Total Pages : 336 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Titanium Alloys at Elevated Temperature by : Mike R. Winstone

Download or read book Titanium Alloys at Elevated Temperature written by Mike R. Winstone and published by CRC Press. This book was released on 2001 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the fourth in a series of international conferences on the Microstructure of High Temperature Materials and the first to exclusively focus on the microstructure and properties of titanium alloys. Papers demonstrating the exploitation of these alloys in a wide range of commercial high temperature applications from the automotive to the aerospace industries were presented.