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 13 of 13 for “"Composite Surfaces"”.
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The role of surface pretreatment and surface analysis in the bondability of carbon fiber-polyimide matrix composites
… properties of carbon fiber-polyimide matrix composite surfaces was evaluated. Eight pretreatments were studied: methanol wash, gritblast, sulfuric acid soak, ammonia plasma, argon plasma, argon plasma followed by ammonia plasma, nitrogen plasma, and oxygen plasma. The pretreated surfaces were …
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Surface characterization and adhesive bonding of carbon fiber-reinforced composites
… fiber/epoxy and carbon fiber/bismaleimide matrix composites was studied. Methyl ethyl ketone (MEK) wipe, peel ply, grit blast and gas plasma treatments were the pretreatments of interest. Chemical and physical changes which occurred in the cured composite surfaces following pretreatment were …
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Self-Replenishing, Wear-Resistant and Anti-Sticking Surfaces Based on Liquid Impregnation of Microstructured Mesoporous α-AI₂O₃ [Alpha Alumina] Matrices
Fabrication of wear-resistant omniphobic surfaces is a persistent scientific challenge and essential for various applications such as in paint industries, fluid transport, antifouling, reduction of friction drag on ship hulls, and stain resistant textiles. However, there are very limited efforts to …
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Evolution and Architecture of an Incised Valley in the Upper Cretaceous Eagle Formation in South-Central Montana
… of the Eagle Formation. Three stratigraphic surfaces are traced continuously for up to 15 km and include the regressive surface of marine erosion (RSE), sequence boundary (SB), and transgressive surface of tidal-fluvial erosion (TSE). Within this sequence stratigraphic framework, 4 facies …
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Evolution and Architecture of an Incised Valley in the Upper Cretaceous Eagle Formation in South-Central Montana
… of the Eagle Formation. Three stratigraphic surfaces are traced continuously for up to 15 km and include the regressive surface of marine erosion (RSE), sequence boundary (SB), and transgressive surface of tidal-fluvial erosion (TSE). Within this sequence stratigraphic framework, 4 facies …
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Surface Characteristics of Silica Polyamine Composites
… the surface characteristics of silica polyamine composites (SPC) by elucidating coordination environments, measuring surface stability, and comparisons with analogous materials. Application of SPC materials as supports for heterogeneous catalysts was also investigated. Analytical techniques …
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Surface Characteristics of Silica Polyamine Composites
… the surface characteristics of silica polyamine composites (SPC) by elucidating coordination environments, measuring surface stability, and comparisons with analogous materials. Application of SPC materials as supports for heterogeneous catalysts was also investigated. Analytical techniques …
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Valley Widening and the Composite Nature of Valley Margin Sequence Boundaries: Evidence from the Neilson Wash Compound Valley Fill, Cretaceous Ferron Sandstone, Utah
… sequence boundaries are strongly diachronous composite surfaces. New models of incised valley evolution show that incised valleys continue to widen as they are being filled which is in disagreement with existing models of valley evolution. The Cretaceous Ferron Sandstone in Neilson Wash, …
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Experimental and numerical investigation of cavitation erosion damage in FRP composites
… range of fibre reinforced polymer (FRP) composites in different industries is constantly growing due to their high strength and stiffness, low weight and relatively easy manufacturing. In some applications, FRP composites can be exposed to cavitation erosion. This work presents an …
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Understanding and Controlling Wettability of Carbon Powders for PEM Fuel Cell Applications
… microporous Vulcan® carbon (VC)/Nafion composites, showing that the wettability varies with VC content (from hydrophilic to superhydrophobic) and is significantly affected by the presence of Nafion. This is attributed primarily to the orientation and coverage of the Nafion molecular …
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Bio-composites materials from engineered natural fibres for structural applications
… fibre reinforced petrochemical-derived polymer composites along with potential improvement in mechanical properties for natural fibre reinforced bio-derived polymer composites, have long been a motivation for further research and innovation in natural fibre composites. Harakeke and hemp fibres, …
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Synergistic Environmental Aging of Glass Reinforced Polymer Composites
… degradation of Glass Reinforced Polymer (GRP) composites were examined and a novel synergistic aging model was proposed in this study. Six GRPs based on glass fibers with four different polymer resins and six pure polymer thermoplastic resins were exposed either individually or in combination …
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The Adhesion Strength of a Plasma Sprayed Silicon Bond Coating on a Silicon Carbide Ceramic Matrix Composite
Silicon-based ceramics and ceramic matrix composites (CMCs), such as silicon carbide (SiC) fiber reinforced SiC, are promising candidates for hot section components in next generation turbine engines. Environmental barrier coatings (EBCs) are essential for implementing these components as they …