Friction Wear And Surface Damage Of Metals As Affected By Solid Surface Films
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Friction, Wear, and Surface Damage of Metals as Affected by Solid Surface Films by Edmond E. Bisson Pdf
As predicted by friction theory, experiments showed that friction and surface damage of metals can be reduced by solid surface films. The ability of materials to form surface films that prevent welding was a very important factor in wear studies of dry and boundary lubricated surfaces. Films of graphitic carbon on cast irons, NiO on nickel alloys, and FeO and Fe3O4 on ferrous materials were found to be beneficial. Abrasive films such as Fe2O3 on MoO3 were definitely detrimental. It appears that the importance of oxide films to friction and wear processes has not been fully appreciated.
Benjamin H. Beam,Dean R. Chapman,John B. McDevitt,Joseph W. Semonian,Max. A. Heaslet,Robert J. Tapscott,United States. National Advisory Committee for Aeronautics,Franklin B. Fuller,James P. Peterson,Julian H. Berman,Kenneth B. Amer
Author : Benjamin H. Beam,Dean R. Chapman,John B. McDevitt,Joseph W. Semonian,Max. A. Heaslet,Robert J. Tapscott,United States. National Advisory Committee for Aeronautics,Franklin B. Fuller,James P. Peterson,Julian H. Berman,Kenneth B. Amer Publisher : Unknown Page : 312 pages File Size : 40,9 Mb Release : 1955 Category : Aerodynamics ISBN : OSU:32435063879506
An Analysis of the Stability and Ultimate Compressive Strength of Short Sheet-stringer Panels with Special Reference to the Influence of the Riveted Connection Between Sheet and Stringer by Benjamin H. Beam,Dean R. Chapman,John B. McDevitt,Joseph W. Semonian,Max. A. Heaslet,Robert J. Tapscott,United States. National Advisory Committee for Aeronautics,Franklin B. Fuller,James P. Peterson,Julian H. Berman,Kenneth B. Amer Pdf
Friction and Wear by I V Kragelsky,M N Dobychin,V S Kombalov Pdf
Friction and Wear: Calculation Methods provides an introduction to the main theories of a new branch of mechanics known as ""contact interaction of solids in relative motion."" This branch is closely bound up with other sciences, especially physics and chemistry. The book analyzes the nature of friction and wear, and some theoretical relationships that link the characteristics of the processes and the properties of the contacting bodies essential for practical application of the theories in calculating friction forces and wear values. The effect of the environment on friction and wear is also considered. Finally, the requirements, which must be fulfilled by the physicomechanical properties of the materials of which contacting bodies are made and which determine their behavior in moving contacts, are formulated. The book will be of interest to a wide circle of readers, e.g. engineers, designers, machine users, and research workers, working on the production of wear-resistant materials and working on the nature of friction and wear.
Hovering Flight Tests of a Four-engine-transport Vertical Take-off Airplane Model Utilizing a Large Flap and Extensible Vanes for Redirecting the Propeller Slipstream by Louis P. Tosti,Edwin E. Davenport Pdf
An investigation of the take-off, landing, and hovering-flight characteristics of a four-engine-transport, vertical take-off airplane has been conducted with a remotely controlled free-flight model. The model had four propellers distributed along the wing with thrust axes parallel to the fuselage axis. In order to produce direct lift for hovering flight, the propeller slipstream was deflected downward about 70 degrees by a full-span 65-percent-chord flap deflected 90 degrees and eight extensible vanes arranged above the wing in a cascade relation.
Friction and the Hot Rolling of Steel by Vladimir Panjkovic Pdf
When it comes to metal rolling, understanding and controlling frictional phenomena is essential to improving product and developing a more effective approach to friction reduction. Providing a historical perspective that goes as far back as the days of Leonardo da Vinci and continues up until the present day, Friction and the Hot Rolling of Steel chronicles the fundamental causes of friction. This book includes well-documented, on-site observations in various commercial plants, presents and examines practical problems, and provides a critical analysis of literary data related to the subject. It explains the base mechanisms of friction, and offers insight and instruction on improving the control and understanding of friction in hot strip mills and other industrial plants. The text presents mathematical models of friction in control and general engineering in a way that enables engineers to test and refine them in their plants. Engineers have the ability to use them to control friction and minimize its negative effects, particularly as it relates to energy waste and product defects. Organized into four sections, this book outlines the evolutional concepts of friction, and covers the general phenomena relevant to the rolling of metals. This includes the impact of roughness and velocity, basics of liquid and solid lubrication, mathematical modelling, and the properties of materials that affect friction in steel rolling, such as metals, oxides, and carbides. It connects the theoretical concepts, laboratory-scale observations, and phenomena in other areas of science and engineering to the large-scale industrial process of hot rolling. It also addresses roll properties, oxidation, wear and chemical composition of rolls and their impact on friction, the evolution of friction over schedules and roll campaigns, and mathematical modelling of friction in hot rolling. Friction and the Hot Rolling of Steel contains a large body of technical information that includes various chemical and physical properties of relevant materials, mathematical models, and plant and laboratory observations. It also provides an extensive reference list of sources that address specific problems and interests in more detail. Presents practical problems that help academics and industrial researchers to identify promising new research areas in tribology and metal processing Offers an insight into the principles of the effective research that combines both academic excellence and industrial relevance Illustrates with observations and easy-to-understand analogies, enhancing the understanding and control of the mechanisms that influence friction in industrial plants This text services technical, research, and academic personnel working in steel processing, railway engineering, rolling of other metals, solid lubrication, the automotive industry, and more.
Fluid Film Lubrication - Osborne Reynolds Centenary by D. Berthe,D. Dowson,M. Godet,C.M. Taylor Pdf
The thirteenth Leeds-Lyon Tribology Symposium was devoted to the topic of Fluid Film Lubrication in celebration of the centenary of the publication of the classical paper by Professor Osborne Reynolds in which he identified the mechanism of hydrodynamic lubrication. These proceedings contain more than seventy papers, written by authors from all over the world, covering the entire spectrum of fluid film lubrication. Of particular interest is the detailed consideration of a wide range of machine elements - bearings, seals, cams, rolling elements, as well as the in-depth, state-of-the-art, analytical contributions.