Studies in Partial Slip Contacts Applied to Fretting Fatigue PDF Download

Author: Anothai Thaitirarot
Publisher:
ISBN:
Category : Contact mechanics
Languages : en
Pages : 360

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Book Description

Author: D.A. Hills
Publisher: Springer Science & Business Media
ISBN: 9401582815
Category : Technology & Engineering
Languages : en
Pages : 251

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Book Description
Failures of many mechanical components in service result from fatigue. The cracks which grow may either originate from some pre-existing macroscopic defect, or, if the component is of high integrity but highly stressed, a region of localized stress concentration. In turn, such concentrators may be caused by some minute defect, such as a tiny inclusion, or inadvertent machining damage. Another source of surface damage which may exist between notionally 'bonded' components is associated with minute relative motion along the interface, brought about usually be cyclic tangential loading. Such fretting damage is quite insidious, and may lead to many kinds of problems such as wear, but it is its influence on the promotion of embryo cracks with which we are concerned here. When the presence of fretting is associated with decreased fatigue performance the effect is known as fretting fatigue. Fretting fatigue is a subject drawing equally on materials science and applied mechanics, but it is the intention in this book to concentrate attention entirely on the latter aspects, in a search for the quantification of the influence of fretting on both crack nucleation and propagation. There have been very few previous texts in this area, and the present volume seeks to cover five principal areas; (a) The modelling of contact problems including partial slip under tangentialloading, which produces the surface damage. (b) The modelling of short cracks by rigorous methods which deal effectively with steep stress gradients, kinking and closure. (c) The experimental simulation of fretting fatigue.

Author: David A. Hills
Publisher: Springer Nature
ISBN: 3030707466
Category : Technology & Engineering
Languages : en
Pages : 231

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Book Description
This book, which has only one very distant forerunner authored by David A. Hills with David Nowell, represents a very big step that is the quantification of these problems and represents the twenty-five years’ worth of work which have gone on at Oxford since the first book on the subject. Fatigue (popularly ‘metal fatigue’) is the primary failure mode of all machines, engines, transmissions and indeed almost all mechanical devices. The propagation of cracks is well understood and is treated in the subject Fracture Mechanics. By contrast, the nucleation of cracks is very hard to quantify and this remains the case with so-called ‘free initiation’ and, to a lesser extent, at cracks nucleated from stress raising features. But the third form of nucleation, where cracks start from the edges of rubbing components, that is, at joints, is potentially a very much better-defined environment, and therefore, the problem is amendable to attack by applied mechanics and experiment. The contents are of value both to those embarking on research on the subject and to practitioner in industry.

Author: Tomasz Liskiewicz
Publisher: Elsevier
ISBN: 0128240970
Category : Technology & Engineering
Languages : en
Pages : 656

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Book Description
Fretting Wear and Fretting Fatigue: Fundamental Principles and Applications takes a combined mechanics and materials approach, providing readers with a fundamental understanding of fretting phenomena, related modeling and experimentation techniques, methods for mitigation, and robust examples of practical applications across an array of engineering disciplines. Sections cover the underpinning theories of fretting wear and fretting fatigue, delve into experimentation and modeling methods, and cover a broad array of applications of fretting fatigue and fretting wear, looking at its impacts in medical implants, suspension ropes, bearings, heating exchangers, electrical connectors, and more. - Covers theoretical fundamentals, modeling and experimentation techniques, and applications of fretting wear and fatigue - Takes a combined mechanics and materials approach - Discusses the differences and similarities between fretting wear and fretting fatigue as well as combined experimental and modeling methods - Covers applications including medical implants, heat exchangers, bearings, automotive components, gas turbines, and more

Author: Mahmoud Helmi Attia
Publisher: ASTM International
ISBN: 0803114486
Category : Fatigue testing machines
Languages : en
Pages : 275

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Book Description

Author: L. Vincent
Publisher:
ISBN:
Category : Contact mechanics
Languages : en
Pages : 16

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Book Description
Fretting damage that consists of cracking or wear generated by debris formation is induced by very small alternated displacements between contacting surfaces. This paper focuses on the quantification of the fretting crack nucleation. Fretting experimental results obtained with a well defined quenched aeronautical steel are analyzed by means of a multiaxial fatigue approach. The plane/sphere configuration was studied under partial slip situations. Validated for classical fatigue conditions, the Dang Van's fatigue prediction is compared to fretting cracking mechanisms. The correlation is achieved according to some conditions : - The friction coefficient operating in the annular partial slip contact has to be identified.

Author: Andrew E. B. Mugadu
Publisher:
ISBN:
Category : Fretting corrosion
Languages : en
Pages : 464

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Book Description

Author: David W. Hoeppner
Publisher: ASTM International
ISBN: 0803128517
Category : Contact mechanics
Languages : en
Pages : 554

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Book Description
This volume includes 36 of the 40 papers presented at the symposium, and a collection of six keynote papers providing background on the subject. Topics covered include parameter effects, environmental effects, crack nucleation, material and microstructural effects, damage analysis, fracture mechanic

Author: Subra Suresh
Publisher: Cambridge University Press
ISBN: 9780521578479
Category : Technology & Engineering
Languages : en
Pages : 708

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Book Description
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.

Author: Magd Abdel Wahab
Publisher: Springer
ISBN: 9811383316
Category : Science
Languages : en
Pages : 957

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Book Description
This volume contains the proceedings of the 13th International Conference on Damage Assessment of Structures DAMAS 2019, 9-10 July 2019, Porto, Portugal. It presents the expertise of scientists and engineers in academia and industry in the field of damage assessment, structural health monitoring and non-destructive evaluation. The proceedings covers all research topics relevant to damage assessment of engineering structures and systems including numerical simulations, signal processing of sensor measurements and theoretical techniques as well as experimental case studies.