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 145 for “"reinforced composites"”.
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Electrospun Nanofiber Reinforced Composites: Fabrication and Properties
… Both long and short electrospun nanofiber reinforced composites were prepared and the effects of the fiber contents, the fabricating methods, and use of continuous and/or short nanofibers on the wetting behavior, mechanical properties, thermal and optical properties were investigated in the …
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Long Term Durability of Glass Reinforced Composites
… performance and long-term durability of glass-reinforced composites. The first portion of this dissertation describes work to assess the effect that post-curing has on widely used E-glass/vinyl-ester composites (E-glass/Derakane 510-A and E-glass/Derakane 8084). It is shown that post-curing can …
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Plastic Limit Strength of Unidirectional Fiber-Reinforced Composites
Made available in DSpace on 2014-12-12T00:25:55Z (GMT). No. of bitstreams: 1 7412096.pdf: 3964294 bytes, checksum: c5f33e8b13e6b61aa900c2bea126faf6 (MD5) Previous issue date: 1973
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Mechanical and physical properties of particulate reinforced composites
… and physical properties of particulate reinforced composites is investigated in this study. These composites were made from dry powder-powder blends. Polymer and reinforcement materials were chosen, characterized and molded into composite plaques. For the same particle volume fraction …
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Development of self-healing techniques for fiber reinforced composites
During the last decades, fiber reinforced composites (FRPs) are year by year replacing metals due to their high stiffness and high strength in combination with low specific weight and corrosion resistance. However, during their service life, these composites due to their laminated structure (no …
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Natural Kenaf Fiber Reinforced Composites as Engineered Structural Materials
… a comprehensive evaluation of natural fiber reinforced polymer (NFRP)'s ability to act as a structural material.;As a chemical treatment, aligned kenaf fibers were treated with sodium hydroxide (alkalization) in different concentrations and durations and then manufactured into kenaf fiber / …
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Active fibre-reinforced composites with embedded shape memory alloys
This dissertation concerns active fibre-reinforced composites with embedded shape memory alloy wires. The structural application of active materials allows to develop adaptive structures which actively respond to changes in the environment, such as morphing structures, self-healing structures and …
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Manufacture of cellular solids using natural fibre reinforced composites
… the manufacturing of recyclable, eco-friendly composites and their fabrication into hollow cores. The composites have been manufactured using compression moulding and extrusion techniques; each representing batch manufacturing and continuous manufacturing respectively. A statistical design of …
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Solvent-based self-healing approaches for fiber-reinforced composites
… over the the past decade, self-repair in fiber-reinforced composite materials presents significant technical challenges due to stringent manufacturing and performance requirements. For high performance, fiber-reinforced composites, the self-healing components need to survive high temperature …
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Towards structural health monitoring in carbon nanotube reinforced composites
… knocked-down CNT surface patch, and fuzzy fiber reinforced plastic (FFRP) samples, which consist of radially grown CNTs on a woven ceramic fiber substrate. Mechanical load and electrical resistance were simulataneously measured using three different probes configurations with respect to the …
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Manufacturability and Analysis of Topologically Optimized Continuous Fiber Reinforced Composites
… are unlocking the potential of Continuous Fiber Reinforced Composites for producing components with greater strength-to-weight ratios than state of the art metal alloys and unidirectional composites. The key is the emerging technology of topology optimization and advances in additive …
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Modeling and experimental investigations of drilling carbon fiber reinforced composites
The application of composites in different industries especially aerospace industry has significantly increased due to their phenomenal mechanical characteristics. Drilling woven composite parts is one of the most common operations in assembly, and therefore selecting the ideal process parameters …
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Self-healing of impact damage in vascular fiber-reinforced composites
Vascular fiber-reinforced composites mimic biological systems to allow pluripotent multifunctional behavior in synthetic engineering materials. In this dissertation, methods are explored for recovering mechanical performance of a composite material after an out-of-plane impact event using vascular …
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Structure-property relationships in flow formed discontinuous fiber reinforced composites
This dissertation presents a new method for obtaining fully anisotropic stiffness tensor for materials containing discontinuous curverd fibers. It is demonstrated that the definition of fiber configuration and configuration averaging allow us to obtain better match with experimental results when …
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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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Optimal Design of Variable-Stiffness Fiber-Reinforced Composites Using Cellular Automata
… the optimal design of variable-stiffness fiber-reinforced composite laminates is studied using an emerging numerical engineering optimization scheme based on the cellular automata paradigm. A cellular automaton (CA) based design scheme uses local update rules for both field variables …
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Manufacturing of advanced continuous fiber reinforced composites for high temperature applications
"New resin systems have enabled composites to be considered as attractive alternatives in structural applications that require material to be stronger, lighter and/or more resilient to environmental effects. The current work is on the development of processes to produce continuous fiber reinforced …
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