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 28 for “"Creasing"”.
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Bending, Creasing, and Snapping of Soft, Slender Structures
… transition between global bending to surface creasing. Closing of Venus flytrap leaves is a classic example of well known snap-through instability. A knowledge of the timescale of snapping is crucial in designing advanced functional materials. We perform the simplest experiment of poking an …
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Gluing and Creasing Paper along Curves: Computational Methods for Analysis and Design
Curved geometries that can be obtained from flat sheets of material have many potential applications in design and engineering. In this thesis, we consider shapes achievable by joining planar patches of material along their curved boundaries, focusing specifically on curved-crease origami as a …
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The effects of permanent creasing on two types of 65/35 polyester- cotton blends as measured by appearance, abrasion resistance and breaking strength
This study compared the creasing qualities of two types of 65/35% polyester/cotton broadcloth fabrics. The wash-wear fabric (pink) had been finished by a conventional pre-cure method and the permanent-press fabric (white) by a post-cure or delayed-cure method which requires a final oven-cure after …
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Water driven deformation in soft solids
… transitions known as breathing, buckling, and creasing. Breathing and creasing have been observed. These droplets are examined in elastomers of two different elastic modulus. When droplets in the stiffer elastomer crease they form just one crease, whereas less stiff elastomers crease in …
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Micromechanisms of paperboard deformation
… This study contributed to an effort to model the creasing process. In creasing, paperboard is punched to create an internal line of damage and then folded along that line to create a corner. It has been determined experimentally that the creasing process involves through-thickness compression and …
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Living museum of the bay : Chesapeake Bay Aquarium
… the Chesapeake Bay. The thesis proposes by in creasing public awareness of the fragile tenure with nature, modern industrial society is the context, an industrial land scape is transformed into a Living/interpretive aquarium .
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Micromechanics of the through-thickness deformation of paperboard
… for the investigation is the modeling of the creasing process, in which a sheet of paperboard is punched and folded along a narrow line to create a corner for packaging. Creasing experiments indicate that out-of-plane shear damage during punching and normal delamination during folding govern …
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Boisen's pioneer studies with schizophrenia
… and etiology. There is, however, generally in creasing optimism at the prognosis of schizophrenia and a much better knowledge of its nature and causation, its symptomatology and dynamics. [TRUNCATED]
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Wave reflections from breakwaters
… decrease approximately linearly with creasing frequency. Whereas the observed reflections depend only weakly on the incident wave energy, the fraction of the incident wave energy flux transmitted through the breakwater decreases with increasing wave energy, suggesting that dissipation …
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A two-level path planning and monitoring architecture for real-world autonomous driving systems
… the safety of autonomous vehicles has drawn in-creasing attention from both academic researchers and industrial experts.This work presents a novel two-level path planning and monitoring architecture to promote safety in autonomous driving. We implemented a HybridA* offline path planner that can …
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Localized deformation in soft solids around spherical cavities
… expansions in silicone and gelatin samples. Increasing the rate of expansion increases the number of cracks initiated in the cavity surface, leading to multi-lobed cracks, as opposed to the penny-shaped cracks present in quasi-static cavitations. The elastic wave speed-dependent fracture …
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Geometry of Creased Shell Structures
… through light yet stiffer shell structures. Creasing is one such method that has attracted a lot of traction lately. Many of these structures are underpinned by motion localised within creases, albeit some that exhibit soft modes of deformation from facet bending, leading to non-rigid …
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Experimental Validation of Heteroclinic Orbit Dynamics in Inertial Microfluidics
… and strongly size-dependent, and that in- creasing buffer flow enhanced particle confinement which improves orbital alignment and reduced velocity variability. Among the tested configurations, the 1:6:1 ratio configuration produced the most uniform migration and closely matched the …
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Coupling mechanisms of insulin secretion - roles of mitochondrial metabolism and cAMP.
… the pancreatic beta-cells compensate by in¬creasing their secretion of insulin, causing hyperinsulinemia. This state may not be a major risk factor per se; in fact, many people develop severe insulin resistance and hyperinsulinemia without ever acquiring diabetes. However, beta-cells in some …
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Modeling HIV-1 Infection and Immune Responses Under Drugs of Abuse
… as morphine have also been associated with de creasing the viral mutation rate. The rapid replication of HIV may result in increased production of mutant viruses that can escape detection by the host’s immune system. This shows that the use of drugs of abuse can make it harder to effectively …
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A correlation-based method for direction finding of multipath signals in frequency hopping systems
… out to reduce the computational complexity by de-creasing the number of unknown parameters. Further analysis can be done in the tracking scenario if more parameters vary with respect to time or hops.
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Bending properties of a lightweight suiting fabric as affected by a fusible and a nonfusible interfacing
… interfacing side up and down when bending and creasing, and fusible and nonfusible composites; and to seam head sizes of composites of the three selected fabrics. It was found that it did not make a difference which interfacing type is used (fusible or nonfusible) with respect to crease …
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Flexural Mechanics of Creased Thin Metallic Strips
… the efficiency of thin shell structures by using creasing to optimise the mechanics, leading to reduced material use, more sustainable construction, and fuel savings from lighter vehicles.
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Bifurcations, Multi-stability, and Localization in Thin Structures
… can aid in simulating deformations such as creasing. The second work introduces an exact pure bending linkage mechanism for potential use in a bend tester that measures the moment-curvature relationship of soft sheets and filaments. Mechanical rotary pleating is a …
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Computational Modeling and Analysis of Protein Interactions at Multiple Coarse-grained Levels in Biological Systems
… thesis builds toward that approach, applying in- creasing levels of coarse-graining across diverse systems. Doing so enhances our understanding of the complex processes underlying life, showing how various levels of simplification can reveal intricate interactions governing cellular functions.
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