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Browsing Mechanical engineering by Title
Now showing items 71-90 of 431
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Characterization of Uncertainty and Variability of Freshwater Consumption Impacts in Life Cycle Assessment
(2013-07-25)Life cycle assessment (LCA) provides a standardized protocol for estimating a wide range of life cycle technology impacts. LCA is used to make comparisons between alternative technology systems and to identify opportunities ... -
Closed-Loop Control of a 3D Printer Gantry
The use of closed-loop control to improve performance in gantry robots is a well-established technology, but adding the necessary sensors and computational hardware to low-cost 3D printer gantries has been generally thought ... -
Cohesive Transitions in Decentralized Networks with Delays
This dissertation involves development of controls for cohesive transitions in non-ideal networks with delays. Most existing network control strategies focus on improving the convergence rate of networks to consensus, say ... -
Combustion, Heat Transfer and Soot Formation in Biomass-Burning Cookstoves
Over three billion people in the world rely on biomass for their cooking and heating needs. Indoor cooking using biomass has been identified as a significant contributor to cancer, respiratory illnesses and cardiovascular ... -
Comparing Model Based and Model Free techniques for Underactuated In-hand Manipulation
Compared to their fully actuated counterparts underactuated hands are cheap, lighter and provide stable grasp across variety of objects without feedback. However, underactuated hands are less dexterous for in-hand manipulation ... -
Comparison of Lagrangian Coherent Structures and Relative Dispersion in a Mixing Layer
Lagrangian coherent structures (LCS) and relative dispersion are two widely used tools to study mixing and have been successfully applied to a wide variety of flows. Their computation requires particle advection by numerical ... -
Comparison of Model-Predictive control and PID control for Adaptive Cruise Control of UW EcoCAR vehicle
This work evaluates two control strategies for Adaptive Cruise Control (ACC), classical control (PID control), and Model Predictive Control (MPC) with linear-piecewise approximated engine fuel map as a part of cost function ... -
Comparison of Sooting behavior amongst various Liquid Fuels
Hydrocarbon combustion at fuel – air equivalence ratio (φ) greater than 1 results in incomplete combustion and formation of black flaky substance, soot. Soot is found responsible for health ailments, global warming and ... -
Comprehensive Control Strategies for a Seven Degree of Freedom Upper Limb Exoskeleton Targeting Stroke Rehabilitation
(2013-02-25)In this dissertation control algorithms are developed and tested for the EXO-UL7 towards a control strategy for stroke rehabilitation. EXO-UL7 is a seven degree of freedom (Dof) powered upper limb exoskeleton that was ... -
Compressive and Flexural Properties of Porous Building Materials Created from Contaminated Waste Glass
(2013-02-25)A new, energy efficient recycling technology is being developed that is compatible with post-consumer and post-industrial waste glass. This technology may be used to produce sustainable materials for the green building ... -
Computation and Measurement of Force and Tissue Damage for the Grasper-tissue Interface in Robot-assisted Minimal Invasive Surgery
Robot-assisted minimally invasive surgery (RMIS) has many benefits for patients. However, loss of haptic feedback in the technique is a major limitation to surgeons since extensive applied force due to the lack of haptic ... -
Computational and Experimental Investigation into the Hemodynamics of Endovascularly Treated Cerebral Aneurysms
This thesis investigates the influence of mechanical stresses and fluid motion on the efficacy of endovascular treatment methods for cerebral aneurysms. The two primary endovascular treatments, embolic coils and flow-diverting ... -
Computational Fluid Dynamics of Intracranial Aneurysms: Eulerian and Lagrangian Analysis of the Effect of Endovascular Treatment on Hemodynamics
Intracranial aneurysms are dilated portions of an artery that supplies bllod to the brain. These abnormal dilatations of the arterial wall carry the risk of rupture, which represents a leading cause of subarachnoid hemorrhage ... -
Conceptual Design of a Circulating Fluidized Bed Reactor as a Thermochemical Thermal Energy Storage System for Applications in Concentrated Solar Thermal Power Plants
The use of fossil fuels as an energy resource results in both the introduction of longline infrared-active gases into the atmosphere, and in the depletion of a finite energy resource. Neither of these results make the ... -
The conditional moment closure method for modeling lean premixed turbulent combustion
(2003)Natural gas fired lean premixed gas turbines have become the method of choice for new power generation systems due to their high efficiency and low pollutant emissions. As emission regulations for these combustion systems ... -
Continuous Flow of Supercritical Phase Fluids for Nanomaterial Synthesis
For fluids in the supercritical phase, slight variations in temperature or pressure can led to large changes in thermophysical properties. This tunability of these fluid properties provide a unique opportunity to enhance ... -
Contributions to Passenger and Commercial Hybrid Electric Vehicle Energy Management Control
Passenger and commercial vehicle powertrain electrification are both a technical and a marketing challenge. A common hurdle experienced by the industry and the consumer is limited driving range and a relatively high cost ... -
Contributions to the Analysis and Design of Mechanical Systems for a Series Hybrid Chevrolet Camaro
Plug-in hybrid electric vehicles use a powertrain architecture that includes components of traditional powertrains such as internal combustion engines and transmissions, as well as components found in battery electric ... -
Control of Microcantilevers Using a Stand-alone FPGA-Processor Platform
(2013-07-25)In magnetic resonance force microscopy (MRFM), feedback control of the microcan- tilever is often needed to reduce the effective Q value. But because the natural frequency of the microcantilver is of order 10 KHz, this ... -
Control-oriented Modeling and Multirate Feedback Control in Laser Powder Bed Fusion Additive Manufacturing
A high-precision additive manufacturing process, laser powder bed fusion (LPBF) has enabled unmatched agile manufacturing of a wide range of products from engine components to medical implants. While finite element modeling ...