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 8 of 8 for “"Fiber Placement"”.
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Feasible Workspace for Robotic Fiber Placement
Online consolidation fiber placement is emerging as an automated manufacturing process for the fabrication of large composite material complex structures. While traditional composite manufacturing techniques limited the products' size, geometrical shapes and laminate patterns, robotic automation of …
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Design of an Automated Fiber Placement Machine to Build Prosthetic Sockets
… generally produced by hand laminating a carbon fiber or other composite around a hand sculpted form. This process is expensive, lacks quality control, and limits future socket improvements. Automated manufacturing is a potential way to reduce labor costs and improved quality through …
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Heat Transfer and Consolidation Modeling of Fiber Tow in Fiber Placement
… 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 towpreg composite model needs to be …
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Resin percolation and intimate contact in fast processing of thermoplastic composites
… flow, rather than squeeze flow, of resin through fibers is the dominant mechanism to achieve intimate contact in rapid TPC processes such as automated fiber placement (AFP) and welding. A 1D intimate contact model based on resin percolation, derived from Darcy's Law, is presented and compared to …
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Analysis of fiber-reinforced composite plates utilizing curvilinear fiber trajectories
… located circular holes were manufactured using a fiber placement technique. With two plates the fibers were steered around the holes in curvilinear trajectories. With the two other plates the fibers were placed in the conventional straight line format. For the case of the curvilinear trajectories, …
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Design of Variable Stiffness Composite Panels for Maximum Strength
… constant stiffness composites by tailoring fiber orientations for specific load conditions. This is achieved by allowing the fiber orientation to vary spatially across the design domain. Motivation for new design methods is driven by the recent advancements in composite additive …
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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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Direct Ink Writing of Functional Fiber/Granular Composites
… manufacturing route for fabricating functional fiber and granular composites with controlled architecture, tunable interfaces, and customized material distributions. Fiber reinforced composites offer high stiffness, strength, fatigue resistance, and functional anisotropy, while granular …