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 49 for “"Laminations"”.
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Storied trauma: the violent chronotopic laminations of queer survivor narratives
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01
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Design optimisation of a slotless brushless permanent magnet DC motor with helically-wound laminations for underwater rim-driven thrusters
… and stator. The relatively large diameter stator laminations of such machines tend, therefore, to have a very thin back of core and narrow teeth, which make them expensive and difficult to manufacture. This thesis proposes an alternative motor topology featuring a toothless stator whose …
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A heat transfer finite element model of a high speed DC electric motor
… motor rotor assembly, stator windings, stator laminations, stator end windings, and the motor housing. Power dissipation is modeled as Joule heating in the motor winding elements and iron core losses in the stator laminations. The two-dimensional axisymmetric model is preprocessed using a two …
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CHEMICAL AND PHYSICAL ANALYSIS OF LAMINATED SEDIMENT FORMED IN LOE POOL, CORNWALL
… are found in Loe Pool. The origins of such laminations are investigated and evidence for their conditions of formation are presented. In all sediment analysed the combustion residue was greater than 80%, and in the black and grey annually-laminated sediment the organic matter was less than …
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Modeling, Manufacturing, and Experimental Validation of an Electric Machine for Aircraft Propulsion
… toroid samples and a stack of slotted stator laminations. A conventional lamination bonding process is found to raise core loss by 20% for 0.1-mm iron-cobalt laminations. An alternative stator-core manufacturing process, which results in no impact on core loss, is identified and experimentally …
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The ultrastructure of a marine luminous bacterium
… cells seemed to be composed of a number of laminations in some L-form cells. These laminations consisting of alternate dark and light bands may consist of numbers of unit membranes with adjacent protein layers fused. The occurrence of L-form cells was shown to be associated with luminescence …
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Innovative Design: Design of a Press System and Molds to Produce a Skateboard Deck.
… and 2-part mold assembly for forming glue up laminations for skateboard decks - is an attempt to gain understanding of the different phases of the product design process.</p>
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Thin and Etched Section Analysis of a Limestone in the White River Formation
… limestone which exhibits very thin, rippled laminations, ranging from one tenth to one half millimeter in thickness. Several isolated, subangular quartz grains were observed in each of the sections studied. A considerable number of fossil outlines are present which appear to be fresh water …
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Laminated Sediments of Loch Ness, Scotland: Indicators of Holocene Environmental Change
… composed of irregular sequences of pale and dark laminations, most sub-millimeter in thickness, some ca 5 mm thick. Enumeration of laminae, and determination of lamination thickness, was carried out using X-radiography and image analysis. A hypothesis was developed that the finer laminations …
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Three-dimensional analytical model with skin effect dedicated to the prediction of the eddy current loss in the permanent magnet in permanent magnet synchronous machine
… The optimal number of permanent magnet axial laminations will also be determined in this thesis.
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Sedimentology of Kingston Peak Formation KP1 Beds in Beck Canyon Region, Kingston Range, California
… of the BSD in all locations contains microbial laminations, oncoids, pisoids, sheets of chert and peloids. Thin sections from about 15 cm below the contact to about 50 cm above the contact show microbial laminations with some peloids or ghosts of peloids and abundant chert. The base of the KPF …
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Novel Magnet Structures for Mechanically Robust Linear Motors
… the magnets are retained in slots in the rotor laminations, providing a robust mechanical constraint.
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Persistence of Depositional Features in a Strongly Seasonal, Tide-Dominated Delta
… examined there is no change in the style of the laminations, suggesting that the processes controlling deposition remain constant throughout the year, despite a change in the external sediment supply. Cores where the depth of laminations decreases from wet to dry season demonstrate that sediment …
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Development of Iron-Based Soft Magnetic Composites with Novel Coating Materials
… of material, with the potential to replace steel laminations as the magnetic core material used in electric motors. The main advantage of SMCs is their isotropic magnetic properties, allowing for radically different design concepts as compared to the 2-dimensional magnetic properties of steel …
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Gromov boundaries of complexes associated to surfaces
… and the arc graph, respectively, as spaces of laminations.
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Dynamic instability of composite laminated plates
… Results are presented for plates with different laminations, boundary conditions, thicknesses, number of layers, etc. Some unstable regions for a damped plate are also shown. Results from the first order plate theory are compared with those from a higher order shear deformation theory.
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Late Holocene earthflows of the Willard Playa/dune complex, Estancia Valley, New Mexico; a geomorphic response to climatic change
… accumulation, depositional flow evidence reveals laminations and lithic-rich horizons derived from the underlying lacustrine section; The large number of geomorphically similar earthflow scars are believed to represent a mesic climatic fluctuation within the late Holocene of the Estancia Valley.
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Enhanced Extended-Surfaces for Two-Phase Pump-Less Cooling Loops
… screen laminates on the trapezoidal fin. Laminations of 8-layers are found to improve boiling performance over the four layers. Experimental results show that the thin, fine coatings on the fin surfaces enhance the boiling performance. At 0.2atm base heat fluxes in excess of …
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Development of a finite element matrix (fem)three-phase three-limb transformer model for Geomagnetically Induced Currents (GIC) experiments
… was then refined further to include joints and laminations. It was discovered that laminations on the transformer need to be introduced as stacks of the core, with each core step split into two, allocating a 4% air gap space between stacks. Refinement of the T-joints proved that the joints have …
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Characterization of anisotropy in organic-rich shales: shear and tensile failure, wave velocity, matrix and fracture permeability
… static or dynamic measurements. However, thin laminations at millimeter scale and bentonite layer at foot-scale cause directional dependency (anisotropy) in the elastic properties of Eagle Ford shale. Throughout the literature, it is usually assumed that the three oriented samples have …
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