Download or read book Ultrasonic Fretting Wear of an Austenitic Stainless Steel written by Danesh Nikoonezhad and published by . This book was released on 1984 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fretting Wear of the Stainless Steel written by Radoslaw Rybiak and published by . This book was released on 2008 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'usure par fretting qui est considérée comme une nuisance dans plusieurs branches de l'industrie telles que l'aéronautique, l'industrie nucléaire, etc., consiste en la dégradation de la surface en contact résultant de l'usure qui nécessite une rémise en état ou un remplacement des éléments des machines. Elle est définie comme l'usure qui a lieu pendant un mouvement oscillatoire de faible amplitude entre deux solides apparement immobiles sous une charge normale à la surface de contact. Un tel phénomène est observé surtout dans les assemblages soumis à des vibrations. Dans le cadre de la Thèse, on a étudié le couple tribologique acier Jethete M152 contre acier A-286 à des temperératures élevées afin de créer des conditions identiques à celles qui existent dans un système d'aube de redresseur à calage variable (RCV) d'un compresseur à haute pression d'un moteur double corps-double flux GE90-115B (Fig. 1). En faisant l'analyse des conditions de travail dans un système RCV on peut considérer le processus d'usure d'une douille (eng. bushing) stationnaire en contact avec un pivot d'aube (vane trunnion) de redresseur. Le mécanisme d'usure correspond à un processus de fretting torsion. Cependant, dans la thèse, on a étudié un fretting type de glissements alternés entre la douille et le pivot sous une sollicitation normale équivalente à une force d'interaction induite par un flux d'air. En effet, nos moyens expérimentaux actuels ne nous permettent pas d'étudier les phénoménes d'usure par torsion. Le mémoire est composé de quatre chapitres. Dans le premier chapitre on réalise une synthèse bibliographique du phénoméne fretting. La problèmatique industrielles est détaillée. Dans le 2ème chapitre sont présentés les matériaux utilisés, les moyens experimentaux utilisés ainsi que le formalisme mécanique et ainsi que la méthode de calcul du volume d'usure. Dans le 3ème chapitre l'auteur mène une discussion sur les résultats de fretting sous des sollicitations invariables avec une prise en considération de l'effet de la température sur le comportement tribologique du système étudié. Une analyse approfondie de l'évolution de l'interface en fonction de la température y est présentée. Dans le 4ème chapitre l'usure par fretting est étudiée pour des sollicitations variables équivalentes à celles qui agissent dans le système RCV. On discute de la dynamique d'évolution du troisième corps sous une température variable pendant un seul essai de fretting. Une carte de fretting-usure de l'activation de la couche 'glaze' en fonction de la température, de l'amplitude de déplacement et de pression est présentée. En utilisant la propriété d'additivité de l'énergie dissipée, une loi 'composite' de l'usure est introduite.
Download or read book Influence of Fretting on Flexural Fatigue of 304 Stainless Steel and Mild Steel written by Robert C. Bill and published by . This book was released on 1978 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tribology of Diamond like Carbon Films written by Christophe Donnet and published by Springer Science & Business Media. This book was released on 2007-12-06 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights some of the most important structural, chemical, mechanical and tribological characteristics of DLC films. It is particularly dedicated to the fundamental tribological issues that impact the performance and durability of these coatings. The book provides reliable and up-to-date information on available industrial DLC coatings and includes clear definitions and descriptions of various DLC films and their properties.
Download or read book Influence of Fretting on Flexural Fatigue of 304 Stainless Steel and Mild Steel written by Robert C. Bill and published by . This book was released on 1978 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fretting fatigue experiments conducted on 304 stainless steel using a flexural-fatigue test arrangement with bolted-on fretting pads have demonstrated that fatigue life is reduced by at least a factor of 10 in the 265- to 334-MPa (38,500- to 48,500-psi) nominal-flexural-fatigue-stress range. In addition, experiments in which the fretting pads were removed after selected numbers of cycles, followed by continued flexural fatigue without fretting show that continued fretting beyond 50,000 cycles does not significantly further reduce fatigue life of 304 stainless steel at 317 MPa (46,000 psi). Microscopic examination of the fretted contact areas revealed fracture initiation sites as well as numerous cracks that did not propagate to failure. Flexural fretting fatigue experiments performed on mild steel showed an insensitivity of fatigue life to the incidence of fretting under flexural stress conditions of from 162 to 217 MPa (23,500 to 31,500 psi).
Download or read book Stainless Steels written by Joseph R. Davis and published by ASM International. This book was released on 1994-01-01 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: ASM Specialty Handbook® Stainless Steels The best single-volume reference on the metallurgy, selection, processing, performance, and evaluation of stainless steels, incorporating essential information culled from across the ASM Handbook series. Includes additional data and reference information carefully selected and adapted from other authoritative ASM sources.
Download or read book Introduction to Surface Engineering written by P. A. Dearnley and published by Cambridge University Press. This book was released on 2017-01-16 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt: This highly illustrated reference work covers the three principal types of surface technologies that best protect engineering devices and products: diffusion technologies, deposition technologies, and other less commonly acknowledged surface engineering (SE) techniques. Various applications are noted throughout the text and additionally whole chapters are devoted to specific SE applications across the automotive, gas turbine engine (GTE), metal machining, and biomedical implant sectors. Along with the benefits of SE, this volume also critically examines SE's limitations. Materials degradation pathways - those which can and those which cannot be mitigated by SE - are rigorously explained. Written from a scientific, materials engineering perspective, this concise text is supported by high-quality images and photo-micrographs which show how surfaces can be engineered to overcome the limits of conventionally produced materials, even in complex or hostile operating environments. This book is a useful resource for undergraduate and postgraduate students as well as professional engineers.
Download or read book The Art of Lutherie written by Tom Bills and published by Mel Bay Publications. This book was released on 2015-10-06 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Art Of Lutherie offers a glimpse into the mind and craft of luthier Tom Bills, whom many consider to be one of the most talented luthiers today. In this beautifully written and enjoyable read, Tom elegantly and clearly shares his best- kept secrets and methods of custom guitar making - those which make his guitars favorites among top collectors and players. Tom's unique approach to The Art Of Lutherie will empower and inspire you to create more than just a guitar, but a truly unique work of art. The information that is generously shared within this insightful and timeless work is both practical and applicable. It contains the same hard-won wisdom that only comes from years of experience and experimentation that Tom uses in creating his inspiring instruments. Over the years, he has producedinstruments considered to be some of the bestsounding guitars ever made. Learning the steps of how to build a guitar is important, but understanding whymaster luthiers take those steps and make those decisions can empower you to make your own educated choices. This will allow you to create unique guitars, and the world needs your art, your guitars - your important contribution. The Art Of Lutherie, a truly unique and inspiring guide, can prepare you to reach new heights when designing and creating unique guitars. It is not often I heap such lavish praise on people; however, Tom is in this case more than deserving: I know of no other luthier whose work I respect more. Tom knows his craft inside and out; he pours his soul into every guitar he makes; heuses cutting-edge science to guide his work, and it shows...as head of Artist Relations and Product Development at Mel Bay, it gives me great pleasure topublish Tom's work, which will no doubt take the art of lutherie to a new level. I hope you'll spend some time soaking in this book - it will certainly augmentyour musicality - Collin Bay. Includes access to online video
Download or read book The Effect of Temperature on the Fretting Wear of Mild Steel written by Peter Leonard Hurricks and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Tribology written by Gwidon W. Stachowiak and published by Elsevier. This book was released on 2001 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanisms of wear, friction and lubrication are comprehensively described in an accessible manner that is designed to be helpful to non-specialists. The control of wear is given extensive treatment with a thorough discussion of lubricant additives, solid lubricants and surface coatings. The effectiveness of coatings in suppressing specific forms of wear is described together with the methods of coating deposition. More than 1000 references are provided to give the reader access to more specialized information if required.
Download or read book Sliding Wear and Fretting Wear of DLC Based Functionally Graded Nanocomposite Coatings written by and published by . This book was released on 1999 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Contact Pressure on Fretting Fatigue in Type 316L Stainless Steel written by K. Nakazawa and published by . This book was released on 2003 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of contact pressure on fretting fatigue in solution-treated austenitic stainless steel was studied under load control at a stress amplitude of 180 MPa and a stress ratio of 0.1. With an increase in contact pressure, fretting fatigue life was almost unchanged at contact pressures between 15 and 45 MPa, but it decreased drastically at contact pressures beyond 60 MPa. Frictional stress amplitude at the fretted area increased smoothly with contact pressure. It was impossible to explain the contact pressure dependence of life by the change in frictional stress amplitude. At low contact pressures, stress concentration due to fretting damage occurred at the middle portion of fretted area and the main crack responsible for failure was initiated there. At high contact pressures, deep concavity associated with plastic deformation of the specimen under the contact of fretting pad was formed without accompanying heavy wear. The main crack was initiated at the outer edge corner of the concavity which probably acted as a notch. It was suggested that the stress concentration at the concavity edge corner played an important role in fretting fatigue at high contact pressures.
Download or read book Testing Tribocorrosion of Passivating Materials Supporting Research and Industrial Innovation written by Jean-Pierre Celis and published by Routledge. This book was released on 2017-07-05 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first edition of Testing Tribocorrosion of Passivating Materials Supporting Research and Industrial Innovation: A Handbook treats in a clear, concise, and practical manner an important material degradation and protection matter. It is designed as a handbook and provides a well structured approach of the basics needed to investigate the tribocorrosion behavior of passivating materials, and to conduct in a correct way a laboratory investigation on it. It provides answers on practical and theoretical approaches of tribocorrosion phenomena to engineers and medical persons involved with material assemblies subjected to aggressive environmental and mechanical conditions. For academic researchers it is a pertinent tool assisting them in how they can perform a tribocorrosion investigation and obtain results that are correctly interpreted and can be exchanged. Different parts of the book are illustrated with practical examples. This handbook is truly an indispensable guide for every professional who comes into contact with the complex material degradation and protection processes that take place under combined corrosion and wear conditions. Fields of interest include: transportation (aeronautics, maritime, rail, automotive), medical implants (orthopaedics, dentistry), biochemistry, food production, energy production, and machining. The coordination of this handbook writing was done by Professor Jean-Pierre Celis (Katholieke Universiteit Leuven, Belgium) and Professor Pierre Ponthiaux (Ecole Centrale Paris, France) assisted by twelve European experts who contributed jointly to the nine chapters of this handbook. Main topics dealt with are tribocorrosion phenomena in medical and industrial sectors, depassivation and repassivation phenomena, impact on synergism in tribocorrosion, specific testing techniques, coupling tribology-to-corrosion, design of a testing protocol, and normalisation.
Download or read book Tribology in Materials and Manufacturing written by Amar Patnaik and published by BoD – Books on Demand. This book was released on 2021-02-03 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tribology in Materials and Manufacturing - Wear, Friction and Lubrication brings an interdisciplinary perspective to accomplish a more detailed understanding of tribological assessments, friction, lubrication, and wear in advanced manufacturing. Chapters cover such topics as ionic liquids, non-textured and textured surfaces, green tribology, lubricants, tribolayers, and simulation of wear.
Download or read book Tribocorrosion of Passive Metals and Coatings written by D Landolt and published by Elsevier. This book was released on 2011-10-12 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tribocorrosion causes the degradation or alteration of materials through the combined action of corrosion and wear. It limits the performance and life-time of installations, machines and devices with moving parts, and controls certain manufacturing processes such as chemical–mechanical polishing. The effects of tribocorrosion are most pronounced on passive metals which owe their corrosion resistance to a thin protecting oxide film. Most corrosion-resistant engineering alloys belong to this category.This book provides an introduction to the developing field of tribocorrosion and an overview of the latest research. Part one reviews basic notions of corrosion and tribology, before presenting the most recent results on the growth and structure of passive oxide films. Tribocorrosion mechanisms under fretting, sliding and erosion conditions, respectively, are then discussed. Part two focuses on methods for measuring and preventing tribocorrosion. It includes chapters on electrochemical techniques, the design of tribocorrosion test equipment, data evaluation and the optimisation of materials' properties for tribocorrosion systems. Part three presents a selection of tribocorrosion problems in engineering and medicine. Three chapters address the tribocorrosion of medical implants including test methods and clinical implications. Other chapters examine tribocorrosion issues in nuclear power plants, marine environments, automotive cooling circuits, elevated-temperature metal working and chemical–mechanical polishing.With its distinguished editors and international team of expert contributors Tribocorrosion of passive metals and coatings is an invaluable reference tool for engineers and researchers in industry and academia confronted with tribocorrosion problems. - Comprehensively reviews current research on the tribocorrosion of passive metals and coatings, with particular reference to the design of tribocorrosion test equipment, data evaluation and the optimisation of materials' properties for tribocorrosion systems - Chapters discuss tribocorrosion mechanisms under fretting, sliding and erosion conditions before focussing on methods for measuring and preventing tribocorrosion - Includes a comprehensive selection of tribocorrosion problems in engineering and medicine, such as the tribocorrosion of medical implants, and tribocorrosion issues in nuclear power plants, marine environments, automotive cooling circuits and elevated-temperature metal working
Download or read book A Study of the Fretting Fatigue of Type 304 Stainless Steel at Room and Elevated Temperatures written by Gary Andrew Simansky and published by . This book was released on 1978 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wear written by Gwidon W. Stachowiak and published by John Wiley & Sons. This book was released on 2006-08-14 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tribology is emerging from the realm of steam engines and crank-case lubricants and becoming key to vital new technologies such as nanotechnology and MEMS. Wear is an integral part of tribology, and an effective understanding and appreciation of wear is essential in order to achieve the reliable and efficient operation of almost any machine or device. Knowledge in the field has increased considerably over recent years, and continues to expand: this book is intended to stimulate its readers to contribute towards the progress of this fascinating subject that relates to most of the known disciplines in physical science. Wear – Materials, Mechanisms and Practice provides the reader with a unique insight into our current understanding of wear, based on the contributions of numerous internationally acclaimed specialists in the field. Offers a comprehensive review of current knowledge in the field of wear. Discusses latest topics in wear mechanism classification. Includes coverage of a wide variety of materials such as metals, polymers, polymer composites, diamonds, and diamond-like films and ceramics. Discusses the chemo-mechanical linkages that control tribology, providing a more complete treatment of the subject than just the conventional mechanical treatments. Illustrated throughout with carefully compiled diagrams that provide a unique insight into the controlling mechanisms of tribology. The state of the art research on wear and the mechanisms of wear featured will be of interest to post-graduate students and lecturers in engineering, materials science and chemistry. The practical applications discussed will appeal to practitioners across virtually all sectors of engineering and industry including electronic, mechanical and electrical, quality and reliability and design.
