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 403 for “"carbon fiber"”.
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High modulus carbon fiber/titanium laminates
… fabricated using inorganic matrix/high modulus carbon fiber composites with titanium sheets. Laminates were tested in three-point bending to assess the performance of the upgrade. The results show that combining Geopolymer high modulus carbon composites with titanium sheets significantly …
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Design of nylon-carbon fiber composite gears
… Gear Manufacturers Association (AGMA) to a nylon-carbon composite material for the purpose of additive manufacturing (AM). Calculations for load carrying capacity and operating temperature are used to optimize a design that was previously constrained by conventional manufacturing technology. A …
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Characterization of carbon fiber flocked cathode materials
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1996.
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Viscoplastic Study of 3D Printed Carbon Fiber Composites
… to model the viscoplastic response of 3D printed carbon fiber composites made using the Mark Two 3D printer by Markforged. The ability to manufacture composites through the use of 3D printers is relatively new and contains gaps in the various mechanical properties of the material, of interest is …
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Carbon fiber electrodes for in vivo neural recording
… after implantation and minimal tissue insult. Carbon fibers` high tensile strength and flexibility allow fabrication of micro-scale electrodes that can withstand mechanical challenges in mobile parts of the CNS. Although there are studies showing carbon fibers’ superior qualities as a potential …
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Multiscale characterization of carbon fiber-reinforced epoxy composites
Transverse cracking is an early form of damage in fiber-reinforced composite materials that can nucleate delamination, fiber breakage, and ultimate failure. Although many variables influence transverse cracking, little work has been done to characterize local and complex microstructural features …
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Design and Optimization of Carbon-Fiber Chassis Panels
… the skin of vehicles for aesthetic purposes and carbon-fiber frame tubes. The VT FSAE car already includes untailored carbon-fiber panels on the bottom and sides of the structure for packaging and aerodynamic purposes. By integrating and optimizing these carbon-fiber panels, the torsional …
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Detecting Delamination in Carbon Fiber Composites Using Piezoresistive Nanocomposites
<p>Carbon fiber prepreg composites are utilized successfully as structural materials for different lightweight aerospace applications. Delamination is a critical failure mode in these composite materials. As composite plies separate from each other, the composite loses some of its ability for …
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Epoxy-clay nanocomposite for carbon fiber reinforced polymer applications
Carbon fiber reinforced polymer (CFRP) composites have been utilized in rehabilitation and strengthening of civil infrastructure, and fabrication of aerospace, automotive and marine structural components. This is attributed to the high strength-to-weight ratio and durability of CFRP. However, for …
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Failure of carbon fiber yacht mast in heavy weather
… yacht owners have appreciated the benefit of carbon. Carbon fiber spars are around 50% lighter and considerably stronger than traditional aluminum masts. The result is increased speed, and the lighter mast also gives the boat a lower centre of gravity and so heeling and pitching is reduced. …
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Microstructure/property relationships for carbon fiber reinforced aluminum alloys
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1985.
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Modeling and experimental investigations of drilling carbon fiber reinforced composites
… into an ellipsoid, in the same direction of the fibers, in the exit layer. In addition, the visualization of this phenomena is executed through Finite Element Analysis. Furthermore, the second phase of this work offers an integrated approach to fully understand the machining process of woven …
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Investigation of internal damping in carbon fiber and steel cables
… literature available for the analysis of carbon fiber cable damping and its effect on dynamical behavior of deployable space structure is scarce. The objective of this work is to examine the variation of cable damping involving different cable properties and the ambient environments …
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The Effects of Carbon Fiber Misalignment on Composite Material Strength
… isotropic composites. On the other hand, fiber misalignment measurements are taken through via digital microscopy to satisfy a statistical approach for the determination of the same elastic modulus. The Paper Physics Approach (PPA) and Laminate Analogy Approach (LAA) are utilized to …
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Shear performance and behavior of long carbon fiber reinforced concrete
… to investigate the shear performance of fiber reinforced concrete beams. Long carbon fibers, to be included with a traditional fresh concrete mix, were developed and their shear performance was evaluated and compared to the performance and behavior of unreinforced concrete, traditionally …
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Design of a carbon fiber suspension system for FSAE applications
… experimental data on designing and optimizing a carbon fiber suspension system for formula cars. The reason carbon fiber suspensions are favored over the current steel suspensions is because of they can reduce the weight of the suspension by 50%. Pull tests on an Instron machine were performed on …
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Carbon fiber surface treatments for improved adhesion to thermoplastic polymers
… and amine salts on the surface chemistry of carbon fibers was examined by x-ray photoelectron spectroscopy (XPS). The surfaces of carbon fibers after anodization in NaOH and H₂SO₄ were examined by scanning transmission electron microscopy (STEM). angular dependent XPS, ultraviolet (UV) …
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Toughened bismaleimides, their carbon fiber composites and interphase evaluation studies
… environments. In addition, unidirectional carbon fiber composites were prepared and their mode I and II strain energy release rates measured. Respectable increases in the interlaminar fracture toughness were obtained, 15 and 20 percent by weight loadings of maleimide terminated polysulfone …
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