Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 111 for “"Tribology"”.
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Tribology of atomically smooth surfaces
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1992.
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Tribology in coal-fired power plants
A series of alumina ceramics and silicon carbide (SiC) particulate composites were evaluated in terms of their erosive and abrasive wear behaviour under different conditions, with the aim of reducing wear damage in power plants. The alumina ceramics tested ranged in composition from 90% alumina to …
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The tribology of laminated magnetic recording heads
This thesis investigates the mechanisms that lead to pole tip recession (PTR) in laminated magnetic recording heads (also known as "sandwich heads"). These heads provide a platform for the utilisation of advanced soft magnetic thin films in practical recording heads suitable for high frequency …
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The tribology of linear tape recording systems
This thesis is devoted to the tribology at the head~to~tape interface of linear tape recording systems, OnStream ADRTM system being used as an experimental platform, Combining experimental characterisation with computer modelling, a comprehensive picture of the mechanisms involved in a tape …
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Modelling and simulation in tribology of complex interfaces
Tribology is known as the science of surfaces in relative motion and involves complex interactions over multiple length and time scales. Therefore, friction, lubrication and wear of materials are intrinsically highly multiphysics and multiscale phenomena. Several modelling and simulation tools have …
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Tribology of polymeric coatings for aggressive bearing applications
… film development and its effect on polymer tribology.
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Tribology and interfacial delamination of thin film systems
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1990.
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A Conditional approach to the tribology of RNLI marine systems.
Lubricant degradation mechanisms in the 4-stroke heavy duty diesel engines of RNLI lifeboats were investigated. These mechanisms lead to the increased wear of main engine components, such as cylinder liners. The lifeboat application is distinct from the other marine applications from an engine …
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Multi-Length Scale Modeling of Rubber Tribology For Tire Application
… performance, stability, and control. Tire tribology is the study of interacting surfaces in relative motion which includes friction and wear. Tire friction is an essential concept for estimating the tractive effort/ traction at the tire-road interface that further helps to determine the …
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The production and tribology of hard facing coatings for agricultural applications
This research has been carried out by the author at the Materials and Engineering Research Institute at Sheffield Hallam University in collaboration with Chapmans Agricultural Ltd. Abrasive wear is a significant issue in many industries but is of particular significance in agriculture. This …
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Fabrication and tribology of composite coatings incorporating solid lubricant micro-reservoirs
<p>The tribological behavior of composite coating incorporating solid lubricant reservoirs has been investigated in this study. A new method, termed " microbeading" was devised to create microscopic reservoirs on the surface of sputter-deposited hard coatings. Pin-on-disk tests were used to …
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Tribology of Sliding Contacts Within Plain Bearing Overlays Subject To Corrosion.
… within used lubricant conditions. In advance of tribology experiments a static immersion test is employed to investigate the corrosion resistance of lead-free lining and overlay materials in both new oil and degraded oil environments. The surface topography and chemical composition of the tested …
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Investigating Tempo-Oxidized Cellulose Nanofiber Lubricating Greases Using Microscopy, Rheology, and Tribology
Lubricating grease plays a significant role limiting the negative effects of friction and wear present in moving components across a multitude of industries and applications. However, current materials commonly used to formulate greases often pose environmental risks during operation and disposal …
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Modelling tribology of slider and disk in a computer hard drive system
Issues of wear and tribology are increasingly important in computer hard drives as slider flying heights are becoming lower and disk protective coatings thinner to minimise spacing loss and allow higher areal density. Friction, stiction and wear between the slider and disk in a hard drive were …
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Adhesion, Residual Stresses and Tribology of Rf Sputter Deposited Titanium Carbide Coatings
Mechanical properties of surface hard coatings depends strongly on both the adhesion of the coating to the substrate as well as the sign and magnitude of the residual stress in the coating. The residual stress in sputter deposited TiC films was found to be compressive and could be related to the …
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Softmatter tribology: Understanding the microstructure to property relationships of hydrogel-like materials
… of hydrogel thin films in tandem with nanotribology was conducted to show that the effective viscosity measured in rheology agrees with the friction behavior, although it is not sufficient to capture the rich frictional response of hydrogels as a function of sliding velocity. In the context …
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Tactile tribology- investigation of tactile graphics and perception characterization using event-related potentials
<p>Tactile graphics are often used to present visual information to the blind and visually impaired (BVI). However, limitations in the skin’s perceptive resolution and inefficiencies in representing tactile information within a modest amount of page space pose challenges in representing scientific …
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Tribology of engineering and coated materials in the presence of environmentally friendly refrigerant
In recent years, considerable effort has been devoted towards finding of alternative refrigerants due to environmental issues related to high global warming potential (GWP). Specifically, developing a system-compatible alternative refrigerant is of prime concern in order to reduce costs associated …
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Tribology and Micro-Chemistry of Sputter Deposited Composite Coatings on Honed Steel Substrates
The tribology and micro-chemistry of TiO(,2)-TiC composite coatings on chemically honed steel substrates has been investigated. The primary wear resistant coatings (TiC) were deposited by rf sputtering using a dc substrate bias and the solid lubricant coatings (TiO(,2)) were deposited in an Ar and …
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