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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 19 of 19 for “"Stress generation"”.
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Cure induced stress generation and viscoelasticity in polymer coatings.
… can be toxic, limiting certain applications. Stress may be generated by a changing specific volume during cure, and stress-induced defects are undesirable. The goal of this research is to understand stress generation in UV irradiated coatings and to model stress generation and viscoelasticity …
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Cognitive Predictors and Behavioural Mediators of Vulnerability-Specific Stress Generation in Depressed Adults
… of core beliefs and maladaptive behaviours with stress generation. A sample of 151 depressed females completed a battery of questionnaires to assess the presence of early maladaptive schemas, excessive reassurance seeking (ERS), avoidance, depression and anxiety. Approximately three months later, …
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Theoretical Analysis of Stress Generation and Volume Change In Lithium Ion and Lithium Thermal Batteries
… aimed at understanding the effect of mechanical stress and volume change on the performance and life of lithium batteries. In the first part of this dissertation a theoretical analysis of stresses in lithium ion battery is presented. The simulations were performed using lithium cobalt oxide as …
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Relations Between Depression and Relationship Quality Among Couples with a Depressed Male
… depression affects their relationships. Using a stress generation perspective, this qualitative study interviewed depressed men and their partners about both partners\' experiences of male depression in their relationships and their experience of the relationship between marital discord and …
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The Effect of Peer Victimization on Social Behavior and Children's Ability to Negotiate Conflict
The present study investigated a model of stress-generation in which peer victimization, via its effects on children's psychological and social adjustment, influences the quality of children's social interactions. 206 children (103 dyads) completed measures of peer victimization, emotional …
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Performance and thermal impact analysis of single cell solid oxide fuel cell by utilizing different fuels and its upgradation to stack level
… and thermal impacts (thermal strains and stresses) of solid electrolyte and porous electrodes for analysing the cell performance. The model is tested and the simulation results of hydrogen fuel SOFC performance are verified with the bench mark data of International Energy Agency (IEA) for …
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Efficient Thermo-Mechanical Model for Solidification Processes and Its Applications in Steel Continuous Casting
… then improved to add coupling of heat flow and stress generation that are increment-wise coupled through the size of the interfacial gap. Coupled results are first verified with a solidifying slice, and then quantitatively against the CON2D 2D model of billet casting by fully employing Abaqus …
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Dewetting and Stress Evolution in Thin Films During Ion Irradiation
… This project also investigates the stress evolution in thin films when they're bombarded with ∼1keV ions. Processes such as vacancy creation and phase transformation play important roles in the stress accumulation of the films. Meanwhile, it is discovered that atoms can be …
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Effect of Design Parameters and Intercalation Induced Stresses in Lithium Ion Batteries
… ion systems which include underutilization, stress-induced material damage, capacity fade, and the potential for thermal runaway. Therefore, better design, operation and control of lithium ion batteries are essential to meet the growing demands of energy storage. Physics based modeling and …
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Stress and structure evolution during Volmer-Weber growth of thin films
To investigate stress evolution during film deposition, a novel electrical technique for in situ thin film stress measurements was developed utilizing piezoresistive silicon microcantilevers, or piezocantilevers. In addition to the thin film stress measurements of Cu made with the piezocantilevers, …
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Operando investigations of mechanical changes in lithium-ion batteries
… and mechanical changes within Li-ion cathodes. Stress, Strain, and Electrochemical Stiffness in Lithium Manganese Oxide Cathodes. In-situ strain and stress measurements are performed on composite electrodes to monitor potential-dependent stiffness changes in lithium manganese oxide (LiMn2O4). …
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A Silicate-Based Packaging Material for 3-D Heterogeneous Integration of Microsystems
… to silicon at thicknesses below ~30 µm. Residual stress generation in films of the silicate packaging material was less than 10 MPa at thicknesses of ~20 - 90 µm. The coefficient of thermal expansion was 2.968 ± 0.054 ppm/°C from 50 - 400°C, and the dielectric constant and loss tangent were ~4 and …
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Gene Delivery of Adenoviral-TMBIM6 Vector Protects the Neonatal Brain after Hypoxic-Ischemic Injury
… endoplasmic reticulum (ER), which results in ER stress. Generation of reactive oxygen species (ROS), from cytochrome P450 members (CYP) and NADPH-P450 reductases (NPR), in combination with activation of the unfolded protein response (UPR) are two major consequences of ER stress that cause …
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Numerical analyses of the long term behavior of enhanced geothermal system (EGS)
… is to gain a better understanding of thermal stresses generated during the heat recovery process as a result of induced cooling of rocks and interaction of thermal stresses with existing lithologic stresses. The long term behavior of the EGS is assessed in terms of stress redistribution and …
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MicroCantilever (MC) based nanomechanical sensor for detection of molecular interactions
… to investigate the mechanism governing surface stress generation associated with chemical or molecular binding on functionalized microcantilevers. Formation of affinity complexes on cantilever surfaces leads to charge redistribution, configurational change and steric hindrance between …
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Electro-chemo-mechanics of solids: application to all-solid-state batteries, polyelectrolyte gels, and actuators.
… volumetric expansion and contraction. Since stresses and strains are transmitted very effectively in solids, the chemical expansion leads to significant stress generation in the host material. These stresses also influence the movement of ions, and thus electrochemistry and mechanics are …
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Continuum modeling of electro-chemo-mechanical phenomena in all-solid-state batteries
… (SSBs) present a promising technology for next-generation batteries due to their superior properties including increased energy density and safer electrolyte design. Traditional SSB-architecture features a Lithium-metal anode, a solid-state composite cathode, and a stiff ceramic electrolyte. …
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A Study of Thermal Stability of Residual Stresses and Fatigue life of Laser Shock Peened Ti-6Al-2Sn-4Zr-2Mo alloy
… effects of laser shock peening (LSP) on residual stress generation, thermal stability of the LSP induced residual stresses and the associated fatigue strength enhancement in the temperature range of (315°C-538°C;600°F-1000°F) the aerospace alloy Ti-6Al-2Sn-4Zr-2Mo (Ti-6242). LSP is a novel surface …