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 20 for “"Composite Fabrication"”.
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Cost modeling and design for manufacturing guidelines for advanced composite fabrication
… almost none (excluding proprietary) for advanced composite materials. Therefore, the central objective of this thesis is to provide a comprehensive overview of the costs of common composite production technologies such as Hand Layup, Resin Transfer Molding, Automated Tow Placement, Pultrusion, …
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Chitosan Graphene Composite Fabrication and Characterization for Treatment of Harmful Algal Blooms and Toxins
<p>Chitosan graphene composites were fabricated and characterized as a management strategy for harmful algal blooms (HABs) caused by various species of cyanobacteria. These chitosan graphene materials were compared to previously studied chitosan graphene-oxide composites in both material properties …
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Pressure Variation Assisted Fiber Extraction and Development of High Performance Natural Fiber Composites and Nanocomposites
… provided by the nano scale materials, various composite properties could be enhanced when such particles are incorporated into a polymer matrix. There is also a trend of utilizing natural resources or reusing and recycling materials that are already available for the fabrication of the new …
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Parameter establishment and verification of a fabrication stress model and a thermo-kinetic cure model for filament wound structures
Two comprehensive composite fabrication simulation computer codes have been written. These codes when coupled together have the capability to model the filament winding and curing processes for composite structures. The "Filament Winding Cure" (FWCURE) code is a thermo-kinetic model. FWCURE models …
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Heat Transfer and Consolidation Modeling of Fiber Tow in Fiber Placement
… heat transfer between heating tools and a composite towpreg in the automated fiber placement process. This dissertation suggests new heating techniques with liquid and rigid contact heat sources, and compares them with a widely used gas heat source for the fiber placement process. A thin …
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Developing a circumstance-based innovation strategy for a midsized aerospace manufacturer : fostering intrapreneurship, opening boundaries, and seeding disruption
… focus in carbon-fiber reinforced polymer (CFRP) composite fabrication. Undertaking the methodology, the thesis finds that the highly competitive landscape combined with the firm's current market position and capabilities suggest an innovation strategy focused on differentiation (as opposed to …
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Tensile and Compressive Mechanical Behavior of IM7/PETI-5 at Cryogenic Temperatures
… tanks with newer designs based on polymer matrix composites. For long-term applications such as those dictated by manned, reusable launch vehicles, an efficient cryo-tank design must ensure a safe and reliable operating environment. To execute this design, extensive experimental data must be …
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Crystallization behavior and morphological features of two LARC polyimides and local orientation studies of two semicrystalline model composites
… This cycle was then used to modify an existing composite fabrication process to produce semicrystalline composites. Two carbon fiber types were utilized to make composites via both fabrication cycles. These composites were evaluated using several techniques. The second unrelated project examined …
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Multi-functional SMA hybrid composite materials and their applications
… By embedding SMA elements into host composite materials, control or modification of the SMA hybrid composite’s structural properties can be accomplished in-service, thereby increasing the hybrid composite’s structural functionality. Previous studies addressed increasing composite …
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New Export China: Translations across time and place in contemporary Chinese porcelain art (1996-2016)
… and the realisation that cultural identity is a composite fabrication. The fourth exposes the tension between the superficial appeal of porcelain and the depths of meaning that can be concealed beneath an attractive facade. Finally, the fifth chapter analyses the tension between an isolating …
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New Export China: Translations across time and place in contemporary Chinese porcelain art (1996-2016)
… and the realisation that cultural identity is a composite fabrication. The fourth exposes the tension between the superficial appeal of porcelain and the depths of meaning that can be concealed beneath an attractive facade. Finally, the fifth chapter analyses the tension between an isolating …
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Digital material aerospace structures
This thesis explores the design, fabrication, and performance of digital materials in aerospace structures in three areas: (1) a morphing wing design that adjusts its form to respond to different behavioral requirements; (2) an automated assembly method for truss column structures; and (3) an …
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Cresol Novolac/Epoxy Networks: Synthesis, Properties, and Processability
… 180-220°C were necessary for efficient composite fabrication using phenolic novolac/epoxy matrix resins. Both sequestered catalyst particles and sizings were investigated for this purpose. Phenolic novolac/epoxy mixtures containing sequestered catalysts exhibited significantly longer …
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Osteoblast Response to Zirconia-Hybridized Pyrophosphate Stabilized Amorphous Calcium Phosphate
… Zr-ACP into a PLGA scaffold, PLGA/Zr-ACP composite foams (5% or 10% (w/v) polymer:solvent with 25 wt% or 50 wt% Zr-ACP) were fabricated using a thermal phase inversion technique. Scanning electron microscopy revealed a highly porous structure with pores ranging in size from a few microns …
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Leather Futures: How leather can be used as a sustainable material of choice for the future
… inform future practice with leather, including composite fabrication and digital manufacturing. In the practice part of this research, several artefacts have been created, demonstrating a potential process for undertaking 'circular' product design. A body of findings resulting from this research …
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Characterization, Processing, and Synthesis of Extreme-Performance Continuous Carbon Nanotube Network Composites
… fiber reinforcements for extreme-performance composites. Yet because the constituent CNTs interact only via intermolecular forces, network properties fall short of their building blocks. Although these materials show promise as reinforcement in composites, the networks’ low-permeability and …
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Hybrid Carbon Fiber/ZnO Nanowires Polymeric Composite for Stuctural and Energy Harvesting Applications
… of carbon fiber reinforced polymers (FRPs) composites, they are prone to failure due to delamination. The ability to tailor the fiber/matrix interface FRPs is crucial to the development of composite materials with enhanced structural performance. In this dissertation, ZnO nanowires (NWs) …
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Examination of Mechanical Stretching to Increase Alignment in Carbon Nanotube Composites
… potential as reinforcement in polymer matrix composite (PMC) materials. The potential of these nanotube-based PMC materials have been reported by researchers at Florida State University (FSU). Through the use of mechanical stretching procedures to increase the alignment of the nanotubes within …
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Thermomechanical Response of Shape Memory Alloy Hybrid Composites
… control of the themomechanical response of composite structures. Control of static and dynamic responses are demonstrated including thermal buckling, thermal post-buckling, vibration, sonic fatigue, and acoustic transmission. A thermomechanical model is presented for analyzing such shape …
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Fabrication and mechanical characterization of liquid-in-solid elastomeric soft composites
As one of the emerging new composite materials, liquid-in-solid elastomer soft composites are of the current research interest for their enhanced mechanical properties and high biological application potentials. Despite established microscopic models for describing elastic behaviors of the …