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 122 for “"Polymer Composite"”.
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Polymer Composite Spinal Disc Implants
… disc degeneration in the spine. The three-part composite samples needed to demonstrate good shock absorption and load distribution while maintaining strength and flexibility, and removing the need for metal in the body, something of which no current total disc replacement or spinal fusion …
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Carbon Nitride and Conjugated Polymer Composite Materials
… were investigated both individually and as composites with the organic conjugated polymers polybithiophene (PBT) and poly(3-hextlthiophene) (P3HT). At low nitrogen content, the film structure was dominated by graphitic sp2 percolation networks, whereas at higher nitrogen contents CNx films …
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Polymer Composite Dielectric Materials For Pulse Power Applications
… issue for delivering intense pulsed power. Polymer composites, incorporating the high energy storage capability of fillers and graceful failure mechanisms of matrix polymers, offer a solution for the acute need for high voltage, high rate pulse power. </p> <p> In the first part of this …
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Evaluation of novel autonomous self-healing polymer composite
… developed autonomous self-healing designs of polymer composites. The commercialization potential of the designs is explored. Potential applications in four industries are identified, and the helicopter blade is selected as the most likely application to succeed in introducing the novel …
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Analysis and design of polymer composite bridge decks
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1989.
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Modeling and Data Analysis of Conductive Polymer Composite Sensors
<p>Conductive polymer composite sensors have shown great potential in identifying gaseous analytes. To more thoroughly understand the physical and chemical mechanism of this type of sensors, a model was developed by combining two sub-models: a conductivity model and a thermodynamic model, which …
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Use of fiber reinforced polymer composite in bridge structures
Fiber reinforced polymer composite (FRP) is a new construction material, gradually gaining acceptance from civil engineers. Bridge engineering is among the fields in civil engineering benefiting from the introduction of FRP composite. Its advantages over traditional construction materials are its …
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Experimental and modeling investigation of cellulose nanocrystals polymer composite fibers
… agents. However, in order to develop CNC nanocomposites with industrial applications, it is necessary to understand how addition of CNCs affect the properties of the polymer nanocomposite. In the present work, several approaches, experimental and theoretical, are presented in an effort to …
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Fracture and Fatigue of a Self -Healing Polymer Composite Material
… to assess the fatigue behavior of a self-healing polymer. The inherent fatigue characteristics of the material are measured. A fatigue-life-extension-based protocol is established for characterizing self-healing under a cyclic loading. Retardation and arrest of the fatigue crack result from …
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Strength and Clinical evaluation of Self-reinforced Polymer Composite Prosthetic Sockets
… using commingled yarn based self-reinforced polymer(srP) composites. The matrix and reinforcement in the single polymer composite are made from the same type of polymer, such as Polylactic acid(SPLA) and Polyethylene terephthalate(SPET) fibres. In contrast, the dual polymer composite has …
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Quantum dot polymer composite materials for light management in optoelectronic devices
… to homogeneously disperse QDs in a transparent polymer matrix, enabling high optical quality devices and thorough investigation of light material interactions. A luminescent solar concentrator (LSC) typically consists of a luminophore embedded in a polymer sheet with a high-performance solar …
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Mixed ion and electron conducting polymer composite membranes for artificial photosynthesis
… solution. The polycation is a OH- containing polymer; PVA solvates this polycation and facilitates the ion conduction via Grotthuss mechanism. The membrane with proper composition has an exceptionally high OH⁻ conductivity of 151 mS/cm, 6.51 times as high as the commercial membrane Neosepta …
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Stiffness and Strength of Fiber Reinforced Polymer Composite Bridge Deck Systems
… are of primary importance in Fiber Reinforced Polymer (FRP) bridge deck applications: STIFFNESS and STRENGTH. The research was undertaken by investigating the stiffness and strength characteristics of the multi-cellular FRP bridge deck systems consisting of pultruded FRP shapes. A systematic …
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Rehabilitation of timber railroad bridges using glass fiber reinforced polymer composite wraps
… an above ground pile with Glass Fiber Reinforced Polymer (GFRP) composite wraps, in combination with phenolic formaldehyde adhesives. Static and dynamic testing was performed to determine the dynamic behavior and the live load distribution of the superstructure. This research study is the second …
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Graphite Doped PAN Nanofiber Mats Infused Polymer Composite Pipeliners: Experimental Diffusion Characterization
… corrosion in the pipelines using Nanofiber Polymer Composite Liners (NPCL) was investigated in this study. Polyacrylonitrile Nanofiber Polymer Composite Liners (PAN NPCL) and Graphite doped PAN Nanofiber Polymer Composite Liners (Graphite doped PAN NPCL) were fabricated and their absorption …
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Electrochemical Study of Ceramic (BaTiO3 based)/ Polymer Composite electrodes for Supercapacitor applications
… inclusion into the BaTiO3 system (CBTG) as a composite was studied. The polymer – ceramic three way composite system was studied at varying polymer and the ceramic mixture composition. A novel sandwich type electrochemical cell setup was developed to study the supercapacitor cell. The Nd doped …
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The Development of Compression Moldable Polymer Composite Bipolar Plates for Fuel Cells
… developed to economically manufacture conductive polymer composite bipolar plates for fuel cells. Bipolar plates are required to possess several important properties for fuel cell operation, with the most sought after being electrical conductivity and mechanical strength. The polymer composite …
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Recycling of glass fibre reinforced polymer composite wind turbine blades in South Africa
… the study to looking at Glass Fibre Reinforced Polymer (GFRP) recycling for South Africa whilst considering wind turbine blades as the source of this scrap GFRP. At a global scale, five main categories of GFRP recycling methods are identified: mechanical, thermal, chemical, high-voltage …
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Synthesis and Characterization of Polymer Composite Materials For Lithium Battery Cathodes and Capacitors
… discusses the synthesis and characterization of polymer composite materials used in lithium primary batteries and capacitors. The objective of the first part of the dissertation is to develop cathode materials based on silver vanadium oxide (SVO) coated with polypyrrole (PPy) having lower …
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