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 “"Continuous fibers"”.
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Design, Fabrication and Testing of Fiber-Reinforced Cellular Structures with Tensegrity Behavior using 3D Printed Sand Molds
… by incorporating tensegrity behavior using long continuous fibers. The designs are inspired by the hierarchical cellular structure composition present in pomelo fruit and the structural behavior of tensegrity structures. A design method for analyzing and predicting the behavior of the structures …
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Einspieluntersuchungen von Verbundwerkstoffen mit periodischer Mikrostruktur
… the special case of metal-matrix composites with continuous fibers.
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Transverse fracture and fiber/matrix interface characteristics of hybrid ceramic matrix composites
… mechanical properties through the use of continuous fiber reinforcement; fine, randomly dispersed discontinuous fiber (or whisker) reinforcement; and a hybrid combination of both continuous and discontinuous fibers. This dissertation addresses two important aspects of determining and …
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Mechanical behavior of a ceramic matrix composite material
… A ceramic matrix which has been reinforced with continuous fibers is not only less sensitive to microscopic flaws, but is also able to sustain significant damage without suffering catastrophic failure. A borosilicate glass reinforced with several layers of plain weave silicon carbide cloth …
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Lyocell Fiber-Reinforced Cellulose Ester Composites-Manufacturing Considerations and Properties
… were prepared using high modulus lyocell fibers and cellulose acetate butyrate (CAB). Two reinforcement fiber types: fabric and continuous fiber tow were used. Fabric had advantages of uniform alignment and easier processing, but lacked the use as a unidirectional reinforcement and a …
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Nanostructured electrospun fibers : from superhydrophobicity to block copolymer self-assembly
… efficient and robust method to make ultrafine continuous fibers with diameter on the order of -100 nm from a variety of materials. As a result, numerous applications for electrospun fibers have already been demonstrated including the commercialized ones in the areas of filtration and tissue …
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Multifunctional Wireless Gut-Brain Neurotechnology
… in-vivo. Finally, wireless microelectronic fibers that combine the scalability and mechanical versatility of thermally drawn polymer fibers with the sophistication of microelectronic chips for organs as diverse as the brain and the gut were developed. This approach produces meters-long …
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Direct Ink Writing of Functional Fiber/Granular Composites
… Coaxial direct writing was used to integrate continuous fibers with polymer matrices and to regulate the local fiber matrix interface. Interfacial modulation was introduced to improve bonding between fibers and surrounding materials. Multi material printing further enabled the deposition of …
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Photo-reactive Surfactant and Macromolecular Supramolecular Structures
… efforts of 12-2-12 from water did not produce fibers at any concentration, however, electrospinning 12-2-12 in water:methanol at concentrations greater than 2C* produced, hydrophilic continuous fibers with diameters between 0.9 and 7 μM. Photo-reactive surfactants were synthesized to …
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Self-healing laminated composites from prepreg fabrics
… and repair before eventual catastrophic failure. Continuous fibers are typical reinforcements for FRP composites which provide excellent axial strength and stiffness in the fiber direction. Owing to this directionality, the fatigue-induced damage first creates matrix cracks and fiber/matrix …
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Micromechanics of finite length fibers in composite materials
… analyze composites containing different types of fibers, different aspect ratios of fibers (as well as continuous fibers), and different fiber orientations. The composite’s stiffness tensor is developed by volume averaging the point-wise stress field in each constituent present in the material …
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Modeling Fiber Orientation using Empirical Parameters Obtained from Non-Lubricated Squeeze Flow for Injection Molded Long Carbon Fiber Reinforced Nylon 6,6
… for use in this manufacturing method. The fibers are cut to a length of 13 mm and then fiber attrition occurs during processing. The combination of chopping the fibers into pellets and fiber breakage creates a distribution of mostly short fiber lengths, with some longer fibers remaining. …
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Manufacturing of advanced continuous fiber reinforced composites for high temperature applications
… is on the development of processes to produce continuous fiber reinforced materials from two state of the art resin systems. Two processes were developed to produce continuous fiber reinforced ceramic materials from a preceramic polymer. The first was a vacuum forming process developed using …