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 40 for “"TPU"”.
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Kinematic and Kinetic Analyses of E-TPU Material in Bowling Footwear
… design, and the modified bowling shoes with E TPU midsole design) on the amount of shock absorption and the mechanics of bowling delivery. All shoes underwent static testing on top of a force platform. The static test involved dropping a 0.5 kg dumbbell inside a PVC pipe from a height of 0.61 …
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From TPU to QPU: Bridging Fidelity Gaps Across Next-Generation Computing Systems
… AI accelerators such as Tensor Processing Units (TPUs) and quantum computing systems utilizing Quantum Processing Units (QPUs) stand out as trans-formative technologies. Despite their potential, these systems share significant challenges related to hardware infidelity, manifested as error-induced …
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Characterization of Resistance Change in Stretchable Silver Ink Screen Printed on TPU-Laminated Fabrics Under Cyclic Tensile Loading
<p>A stretchable silver ink was screen printed to TPU sheets, then tensile coupons of the TPU, both bare and laminated to cotton, Denim and spandex fabric, were subjected to 1000 cycles of 20% uniaxial strain. In-situ resistance measurements of printed traces were processed to generate datasets of …
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Essays on Investment and Trade under Policy Uncertainty
… sentiment, especially trade policy uncertainty (TPU). This thesis aims to investigate the impact of TPU on investment and export. It includes three empirical studies, with one study conducting the analysis at the country-industry level and the others focusing on firm-level analysis. The first …
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4D-Printing with Cellulose Nanocrystal Thermoplastic Nanocomposites: Mechanical Adaptivity and Thermal Influence
… (CNC) and thermoplastic polyurethane (TPU) nanocomposites, focusing on preliminary optimization of a processing window for 3D printing of mechanically responsive composites and the influence of temperature on mechanical adaptivity, thermal stability, and rheology. CNC thermoplastic …
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The Isolation of Cellulose Nanocrystals from Pistachio Shells and Their Use in Water Actuating Smart Composites
… were also added to thermoplastic polyurethane (TPU) to observe the reinforcement effects by dynamic mechanical analysis. Pistachio shells offered a high yield source material for CNCs, with a high aspect ratio but a low crystallinity. They did offer significant reinforcement of the TPU, but less …
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ZSM-5/thermoplastic polyurethane mixed matrix membranes for pervaporation of dilute aqueous organic solvents
… to synthesize ZSM-5/thermoplastic polyurethane (TPU) mixed matrix membranes (MMMs) for efficient pervaporation of n-butanol and ethanol from dilute aqueous solutions as a cheap and easy to fabricate replacement for the benchmark polydimethylsiloxane (PDMS) membranes. Binary systems of …
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Process-Structure-Property Relationships of Cellulose Derivative/Thermoplastic Urethane Polymer Composites
… of 3D-printable thermoplastic polyurethane (TPU) composites reinforced with hydroxypropyl cellulose (HPC) or cellulose nanocrystals (CNCs), aiming to systematically investigate how formulation, processing, and filler interactions dictate thermal stability, rheological behavior, mechanical …
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Electrospun Nanofiber Reinforced Composites: Fabrication and Properties
… of polymers, like thermoplastic polyurethane (TPU), melamine-formaldehyde (MF) and polyimide (PI). Nylon-6 and PI electrospun nanofibers are excellent candidates for reinforcement purposes as they possess excellent mechanical properties. Both long and short electrospun nanofiber reinforced …
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Investigations into the Form and Design of an Elbow Exoskeleton Using Additive Manufacturing
… and 3D latticing. The experiments on TPU kerf cut found that the stress-strain curve of the sample can be modified by changing the cut pattern, it is even possible to control the linear region. The TPU TPMS test showed that given the same volume, changing the lattice parameters can …
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Desarrollo de materiales elastoméricos en base de poliuretano e iones lantánidos : estudio de sus propiedades ópticas, dieléctricas y dinamo-mecánicas
… en base de poliuretano termoplástico (TPU) y especies de terbio(III) para estudiar sus propiedades ópticas, dieléctricas y dinamo-mecánicas. Se utilizaron dos compuestos de terbio(III), una sal de nitrato comercial, y se sintetizó y caracterizó un compuesto de coordinación de fórmula …
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Development of synthetic fiber-based reinforcements for thermoplastics as alternative to steel-based analogs for industrial applications
… fibers) to develop Thermoplastic Polyurethane (TPU) composites with superior mechanical properties and enhanced safety characteristics. The experimental work proposed in this thesis is divided into 3 distinct experimental research phases. The experimental results of phase 1 show that the epoxy …
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Processing Approaches for Maintaining Multifunctionality in Advanced Thermoplastic Composites
… these particles in a thermoplastic polyurethane (TPU) matrix, a stimulated optical response is achievable through hydration of the bulk film. This phenomenon is reliant on the dispersion of the ENCC particles, as particle agglomeration will result in non-uniform opacity. Chapter 3 will address the …
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Accelerated Durability Characterization of Laminated Polycarbonate Systems
… interlayer type is thermoplastic polyurethane (TPU), which has the ability to bond to substrates other than glass, making it useful for applications like ballistic-resistant glass laminates, which often involve sheets made of polycarbonate. This study aims to explore the durability of laminated …
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The development and characterization of soft robotic contractile actuators
… McKibben PAMs with thermoplastic polyurethane (TPU) bladders were too bulky and prevented the embedding of additional actuators. Therefore, multiple alternate PAM designs which occupy minimal unpressurized volume were explored. Of the various bladder and mesh pairings for traditional McKibben …
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Fused filament fabrication to manufacture three- and four-dimensional objects made of shape memory polymers
… In the last decade, thermoplastic polyurethanes (TPUs) belonged to the most researched SMPs. The thermoplastic nature of TPUs permits them to be molded using classical melt-based processing techniques like extrusion, injection molding, etc. Additive manufacturing (AM), alias three-dimensional (3D) …
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Characterization of Flexible Hybrid Electronics Using Stretchable Silver Ink and Ultra-Thin Silicon Die
… to be stretchable was screen printed on a TPU substrate and cured using box oven, conveyor convection oven, and photonic curing processes. Reliability tests were conducted including a tape test, crease test, wash test, and abrasion test. Optimization of each curing process resulted in all …
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Renewable Source Thermoplastics
… industry standard products.</p> <p>Cerenol TPU Incorporation</p> <p>Dupont has recently developed a renewable source Polyol (Cerenol) which is derived from 1,3 propane diol processed from corn feeds. This material, which is a three carbon ether repeat unit, is in the pre-commercial stage and …
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Studies of physical properties of novel lithium polymer electrolytes.
… using thermoplastic polyester polyurethane (TPU), modified natural rubbers and modified natural rubbers/polyethylene oxide polymer hosts have been investigated. Three types of modified natural rubber, namely 2S percent epoxidised natural rubber (ENR2S), SO percent epoxidised natural rubber …
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Analysing the One Certainty that Rules Us All: Trade (and Economic) Policy Uncertainty
… (2020) newspaper-based Trade Policy Uncertainty (TPU) indices misclassify and omit a substantial number of articles. I use a new set of search terms to construct an improved TPU index for the U.S. from 1987 to 2023 and provide a detailed mapping between major trade policy events in the U.S. and …
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