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 14 of 14 for “"Adhesive wear"”.
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A laboratory simulation of adhesive wear of high speed reciprocating components in water powered mining equipment
A high-speed reciprocating sliding wear test rig was used to examine the metal on metal surface interactions of materials under consideration for application in water powered stoping equipment. The suitability of this test rig was investigated by implementing a test programme covering self-mated …
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On developing a graphitic white iron for metal-to-metal wear systems
… addressed heat dissipation issues related to the adhesive wear observed in metal-to-metal wear systems, by developing a graphitic white iron to increase thermal diffusivity of the wear components. One of the premium materials commonly used in current metal-to-metal wear systems is Fe15Mo18Cr and …
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Tribological characteristics of coatings on aluminium and its alloys
… to improve the resistance of the otherwise poor wear characteristics of aluminium. In recent years there has been an increasing interest in other treatments and coatings, on both aluminium and other base metals. The aim of this investigation is to explain the tribological performance and wear …
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A novel method of detecting galling and other forms of catastrophic adhesion in tribotests
… of a tribotest provides better detection of adhesive wear than the coefficient of friction alone. In this investigation an industrial tribotester (the Twist Compression Test) was instrumented with a variety of sensors to record: vibrations along two axes, acoustic emissions, electrical …
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Tribo-corrosion maps for steels, titanium and titanium carbide materials
… of change in sliding speeds and normal loads on wear behaviours were investigated for dry sliding conditions and tribo-corrosion maps were constructed with a tribo-system approach. The work was carried out in the following phases: In phase I, a fundamental study of the wear behaviour of two …
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Energy and Thermodynamically Based Approaches for Analysis of Damage in Contact Problems
… damage are studied, namely crack nucleation and adhesive wear. The proposed methodology is primarily based on the laws of energy and thermodynamics, and as such offers great advantages by unifying the analysis of damage in a variety of contact configurations. Crack nucleation is the first damage …
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Untersuchungen zur Zerspanbarkeit von austenitisch-ferritischem Gusseisen mit Kugelgraphit (ADI)
… of high strength, high toughness and a good wear resistance. The fabrication of ADI-parts consists of a casting process and a following special heat treatment. Depending on the heat treatment parameters high strength and wear resistant or high ductile grades can be developed. Current …
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A radio-tracer study of the effect of surface finish on the transfer of polychlorotrifluoroethylene sliding on mild steel
… um - rms) surfaces was attributed to an abrasive wear mechanism. An apparent translation to adhesive wear was observed during later stages of transfer. This transition occurred much sooner with the polished surface than with the rough surfaces. This work also demonstrated that a radio-tracer …
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Infrared microscope studies of surface temperatures produced by friction with graphite-epoxy and carbon-PEEK composites
… was seen to affect coefficient of friction and wear significantly; but surface temperature was very little affected by fiber orientation. In carbon-PEEK, fiber orientation affected the coefficient of friction, wear and surface temperatures significantly. Surface temperatures in both materials …
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The tribological behaviour of aluminium matrix composites
… conditions. In abrasive environments, the wear behaviour of each composite is dominated by their ability to resist indentation by hard particles. Abrasion against fine grit particles leads to a reduced load per abrasive particle and a correspondingly significant reduction in wear loss. …
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A biophysical analysis of the occlusal wear of dental materials
… was used to clinically simulate the dental wear process and surface friction between opposing maxillary and mandibular elements. Measurement of surface friction between occlusal surfaces of natural premolar teeth demonstrated large variation. High viscosity lubricants and surfactant …
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Advances in hybrid water-lubricated journal bearings for use in ocean vessels
… at lower speeds such as increased abrasive and adhesive wear as well as stick-slip shaft motion. This project focuses on developing a hybrid journal bearing capable of operating with hydrostatic pump pressure at lower rpm, while still maintaining the capability for hydrodynamic operation at …
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Tribological and Structural Characterisation of Ceramic on Metal Hip Replacements
… hip replacements was carried out using in vitro wear testing methods. Two ceramic materials, pure alumina and an alumina matrix compound (zirconia toughened alumina (ZTA)), were articulated against as-cast CoCrMo alloy cups. The diameter was changed from 38 mm to 60 mm to explore the effect of …
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The feasibility of using electrostatic charge condition monitoring for lubricant additive screening
… reduce environmental impact and minimise wear over ever increasing service intervals. However, additive behaviour and interactions between additives is not well understood. An absence of real-time technology has hindered understanding of additive behaviour and interaction between additives …