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 57 for “"complex shapes"”.
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Residual stresses and deflections in complex shapes formed by laser bending
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1986.
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Visualization of the flow in complex shapes made by resin transfer molding
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1993.
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Design procedures : a computational framework for parametric design and complex shapes in architecture
… early stages of design, it is common to generate shapes of complex nature that could only be produced by the combined forces of human imagination and computer power. However the more complex the shapes are, the more difficult it becomes to establish a discourse that embodies the geometrical and …
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Multiphysics Modeling And Simulation Process To Develop Thin Piezoelectric Film Sensors To Measure The Vibration Of Structures With Complex Shapes And Boundary Conditions.
… electricity and elasticity. However, due to the complexity of the theory involved, finite element and numerical methods are often used in the process. Limited analytical exact solutions are also found in literature. The objective of this work is to devise a multiphysics modeling and simulation …
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Electromagnetic Characterization of Complex-Shaped Carbon Nanotubes Using Characteristic Mode Analysis
… of Carbon Nanotubes (CNTs) with controlled complex shapes. For example, CNTs with one or more branches sprouting off the main CNT axis, forming unique Y-shaped and K-shaped carbon nanostructures, have recently been fabricated. The angle at each junction and the properties of each branch can …
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Design, Fabrication, and Experimental Investigation of an Additively Manufactured Flat Plate Heat Pipe
… manufacturing techniques allow for manufacturing complex parts that are typically not feasible with conventional manufacturing methods. Thus, additive manufacturing opens the possibility to develop high performance heat pipes with complex shapes. In this study, an additive manufacturing technique …
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Surface texture enhancement of SLS processed turbine blades using a mix of flexible media and abrasives
… industry as it allows for the fabrication of complex shapes with minimal material wastage. With the increased use of complex shapes, newer polishing technologies need to be developed to accommodate the fabrication technological advancements. This dissertation proposes a novel abrasive flow …
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The spatial organization of the microtubule cytoskeleton and cell divisions promotes tissue morphogenesis
… epithelial tissues grow and become sculpted into complex shapes through highly coordinated cell behaviors, such as cell shape change and cell division. Both processes involve contractile forces generated from distinctly organized actomyosin networks. How cells coordinate their behaviors and how …
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Manufacture and Characterization of Additively Manufactured Ceramic Electromagnetic Structures
… enables the construction of dielectrics with complex shapes that enable innovative microwave applications such as resonators, filters, and metamaterial lenses. This thesis addresses the production and characterization of cellular structures of various designed densities created with a low loss …
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How To Pack Anything
… modern packing research has struggled with complex shapes and even proprietary packing software is not capable of effectively processing the wide variety of models created for 3D printing. A recent work (Spectral Packing [1]) uses the frequency space of a voxel grid to achieve impressive …
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Parametric constructs : computational designs for digital fabrication
… in the research presented in this thesis. Complex curved forms were chosen in the different case studies to exemplify the advantages of this method in designing and fabricating this complex shapes which have proven to be particularly difficult to construct by traditional methods, usually …
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High resolution scattering measurements for stationary particles
… However, when one moves to increasingly complex shapes one must take into consideration not only light extinction but multi angle light scattering. Cylindrical particles scatter light in a way that can be quantified by electromagnetic wave theory. This scattering distribution is directly …
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A Method for Winding Advanced Composites of Unconventional Shapes using Continuous and Aligned Fibers
… filament winding is proposed; one that can wind complex shapes of the same high quality as conventional filament winding. This process has achieved this by winding continuous, uncut, and aligned fibers. This process is called Lotus Filament Winding.</p>
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Fabrication and construction methods for low-cost, low-carbon structural components for housing in India
… solution because of the consistency and complex shapes that are achievable, but it has drawbacks when other dimensions of analysis are considered. I demonstrate that structural optimization of reinforced concrete can have positive, practical implications for housing in India.
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Computational design and analysis of multi-scale polymer machines
… are analyzed, polymer sheets that fold into complex shapes due to a gradient in cross-linking throughout its volume, and a dome structure that experiences limit point buckling during inversion. The first chapter of this work discusses an analysis of the self-assembly of thin, programmable …
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An investigation of blast wave transmission through rodent simulants
… articles made from tissue simulant. For simple shapes, the computational model has been shown to match experimental results reasonably well. More complex shapes are planned to put more strain on the computational model for stronger validation.
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Robotic Finger Hardware and Controls Design for Dynamic Piano Playing
… of tasks like grasping unfamiliar objects with complex shapes, in-hand re-orientation, and even solving Rubik's cubes. This work explores a new kind of task: playing piano. Unlike most common robotic hand objectives, playing piano requires much higher accelerations and control over velocity …
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Vibro-acoustic optimization of panel with curvilinear stiffeners
… deposition technique which deposits metal in complex shapes on a metallic base plate, it has become easy to manufacture complex shapes such as panels with curvilinear stiffeners. Designing and optimizing stiffened panels with predefined structural and acoustic response is the focus of this …
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Investigation into the Effects of Wire Mesh on Tensile and Impact Properties of Fiber Metal Laminates
… material can be used advantageously to create complex shapes and is more cost effective to manufacture.</p>
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Morphogenetic forces planar polarize LGN/Pins in the embryonic head during Drosophila gastrulation
… grow and undergo dramatic changes to adopt complex shapes. Coordinated cell behaviors, including oriented cell divisions are crucial to the proper development of epithelia. How forces are transmitted across the developing embryo and how these forces along with genetic programs that are …
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