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 44 for “"Chemo-mechanical"”.
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Identification of esters in carious dentine Staining and chemo-mechanical excavation
… was evaluated by comparing the efficacy of chemo-mechanical excavation with that of traditional rotating instruments. The results revealed ester groups unique to the carious dentine, with a higher occurrence in the inner layer of carious dentine, which, after reaction with hydrazine …
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Continuum modeling of electro-chemo-mechanical phenomena in all-solid-state batteries
… commercialization of SSBs faces a series of chemo-mechanical issues across its constituents, namely growth induced fracture of solid-state electrolyte (SSE) due to metal deposition, interphase formation at the anode/SSE interface and damage of the various phases in composite electrodes. …
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Thermo-chemo-mechanical modelling of hydropower structures affected by alkali silica reaction
… model in which a macrostructural thermo-chemo-mechanical ASR constitutive model was used to model concrete swelling, a prognostic evaluation approach to aid in determining the life expectancy of the hydropower plant was proposed.
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Controlling and understanding electro-chemo-mechanical properties of layered cuprate thin films
Surface exchange kinetics are a key indicator of performance for electrochemical devices including solid oxide fuel cells. Due to broad flexibility in dopant selection and concentration, mixed ionic-electronic conducting (MIEC) ABO₃ perovskite oxides have been extensively explored as model systems …
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Dynamical models, chemo-mechanical coupling and numerical recipes for some soft biological systems
… and respond to a vast variety of biochemical and mechanical signals whose strong interplay regulates most of cellular physical properties. Advances in the field of mechanobiology suggest that changes in cell mechanics, ECM structure, or molecular mechanisms by which cells respond to mechanical …
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Statistical nano-chemo-mechanical assessment of shale by wave dispersive spectroscopy and nanoindentation
… heterogeneous microstructure, and multiscale mechanical behaviors. This thesis aims at establishing the link between the composition and mechanics of shale materials at grain scales. A comprehensive experimental program forms the basis for the characterization of the chemical composition and …
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Electro-chemo-mechanical instabilities at interfaces in al-solid-state lithium-ion batteries
… pores. Above a critical current density, the mechanical stress at a critically-sized Li-filled flaw tip at the SSE surface can breach the SSE fracture stress to initiate and propagate a crack through which Li penetrates the SSE, until a short circuit occurs. An electrochemo- mechanical model …
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Physics and Chemistry Based Constitutive Framework for Thermo-Chemo-Mechanical Responses of Polymeric Materials
… based constitutive framework for thermo-chemo-mechanical responses of polymeric materialsPhysics and Chemistry Based Constitutive Framework for Thermo-Chemo-Mechanical Responses of Polymeric Materialss and multi-physics of soft materials with rate-and temperature-dependent matrices. Such …
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Geo-chemo-mechanical modeling of sedimentary rocks: application to unconventional reservoirs and geological CO2 sequestration
… the effect of fabric and mineralogy on the mechanical behavior of organic-rich shales becomes of critical importance for petroleum engineers. Similarly, the effect of geochemical alterations in geomechanical behavior becomes of critical importance for storage of CO2 in deep saline …
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Electro-chemo-mechanical Studies of Perovskite-Structured Mixed Ionic-Electronic Conducting SrSni-₁₋xFexO₃₋x/₂₊[epsilon]
… means of AC impedance spectroscopy. The electrochemo- mechanical properties of SSF were found not to differ significantly from the corresponding composition in STF. It is believed that Fe dominates the character of the valence and conduction bands and thus governs the electronic properties in …
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Irradiated recycled plastic as a concrete additive for improved chemo-mechanical properties in hardened cement pastes
… been explored as a means of improving concrete's mechanical properties while also providing an efficient way to both re-purpose waste plastic and partially displace cement for the purpose of reducing carbon emissions. This replacement, however, typically comes with a sacrifice of compressive …
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An Aero-Thermo-Chemo-Mechanical Coupling Framework for the Analysis of Hypersonic Ablative Thermal Protection Systems
… (CFD) solver, to form a complete aero-thermochemo-mechanical simulation framework. The ΣMIT-US3D coupling framework provides a step towards high-fidelity simulation capabilities for hypersonic vehicles with ablative TPS, establishing a strong foundation for the simulation of fluid-structure …
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Relating charge transport properties to the multi-scale chemo-mechanical evolution of crystallizing mixed conducting oxide thin films
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01
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A variational multiscale computational framework for reaction-dominated thermo-chemo-mechanical process modeling in multi-constituent material systems
… solids, and their coupled, nonlinear, thermo-chemo-mechanical response in the reaction-dominated regime. This is accomplished through two major components of the work: (i) new robust variational multi-scale numerical methods that are consistently derived, and (ii) models for multi-physics …
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Time-Space-Resolved Raman Analysis of Structure-Property Relationships in Heterogeneous Structural Materials
… is essential. In particular, characterizing the chemo-mechanical properties could lead to the development and evaluation of sustainable materials. However, the spatial and temporal complexity of cementitious materials makes it challenging to characterize these materials. Here, a …
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A THREE-DIMENSIONAL FULLY COUPLED HYDRO-MECHANICAL ELASTO-PLASTIC MODEL FOR UNSATURATED SOILS WITH CONSIDERATION OF HYSTERESIS BEHAVIOR
… and/or seasonal wetting-drying cycles. While mechanical hysteresis is a common feature of soils in general, hydraulic hysteresis is associated with unsaturated soils. Most existing constitutive models paid limited attention to the mechanical and hydraulic hysteresis behavior of unsaturated …
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Electro-chemo-mechanics of solids: application to all-solid-state batteries, polyelectrolyte gels, and actuators.
… of lithium around interfacial chemical or mechanical defects in ASSLMBs. Our simulations reveal the role of charging/discharging current levels, cell stack pressure, and other mechanical constraints of the system on possible failure mechanisms of such cells. Part 2. Polyelectrolyte …
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Understanding and Controlling the Degradation Mechanisms at Cathode-Electrolyte Interfaces in All-Solid-State Lithium-Ion Batteries
… during sintering. Electrochemical and chemo-mechanical stabilities at the interface are necessary during the operation of the battery for good cyclability. In order to study interfacial stabilities we developed model system with thin film cathode. The cell design allowed …
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The Role of Water and Strain Rate in the Deformation of Limestone
… interaction can significantly alter the mechanical and petrophysical properties of host rocks. This study focuses on the role of fluids in weakening porous carbonate rocks. High solubility of calcite can cause chemically-induced weakening and lead to time-dependent deformation in …
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