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Effect of chip thickness, sub-critical bifurcations and process parameters in high-speed milling
(University of Missouri--Columbia, 2010)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The main focus of the current research is to experimentally and numerically investigate of subcritical bifurcations in milling accounting for actual ...
Molecular dynamics simulation of nanosintering processes
(University of Missouri--Columbia, 2010)
In this thesis, two scenarios of simulations are studied by molecular dynamics (MD) method. The first one will investigate the neck growth in the laser sintering of different-size gold (100) nanoparticles under different ...
Analysis of oscillatory flow and heat transfer in an oscillating heat pipe
(University of Missouri--Columbia, 2010)
An advanced physical and theoretical model of a U-shaped minichannel - a building block of an Oscillating Heat Pipe (OHP) - has been developed step by step. a) The gravity and pressure loss at the bend are included in the ...
Electron emission thermal energy conversion
(University of Missouri--Columbia, 2010)
Electron emission from a surface can be achieved via two mechanisms: tunneling and thermionics. Converting thermal energy to electrical power using these mechanisms is achieved by generation of an electron current from the ...
An axisymmetric interfacial tracking model for melting-vaporization-resolidification in a thin metal film irradiated by pico to femtosecond pulse lasers
(University of Missouri--Columbia, 2010)
A two dimensional axisymmetric, interfacial tracking method is developed to model rapid melting and solidification of a free standing metal film subjected to an ultra-short laser pulse. Finite volume method is employed to ...
Automated trajectory generation and guidance for a new launch vehicle flight phases
(University of Missouri--Columbia, 2010)
Much effort has been put into developing technologies for next generation re-usable launch vehicles. Fully re-usable launch vehicles include a booster stage that is designed to land, usually near the launch site, after it ...
Flight mechanics and control for an unpowered reusable launch vehicle
(University of Missouri--Columbia, 2011)
A new strategy has been developed to aid in allowing a reusable launch vehicle to complete the Trajectory Area Energy Management (TAEM) phase of reentry. Using the new trajectory planning and tracking strategy, the reusable ...
Thermal mechanical analysis of applications with internal heat generation
(University of Missouri--Columbia, 2014)
Synthesis and application of calcium phosphate fibers/whiskers
(University of Missouri--Columbia, 2013)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Calcium phosphate is the main inorganic constituent of human hard tissues such as bone and teeth. It has been studied extensively and used clinically ...
The thermal-mechanical analysis of targets for the high volume production of molybdenum-99 using a low-enriched uranium metal foil
(University of Missouri--Columbia, 2012)
Molybdenum-99 diagnostic imaging is the most commonly practiced procedure in nuclear medicine today with the majority molybdenum-99 produced with proliferation sensitive HEU. International and domestic efforts to develop ...
The study of hydroxyapatite reinforced polylactic acid composites for orthopedic applications
(University of Missouri--Columbia, 2014)
Investigation of the effect of tool materials and process parameters on dry drilling of Ti-6Al-4V Alloy
(University of Missouri--Columbia, 2014)
The performance of un-coated and TiAlN-coated carbide tools were investigated when dry drilling Ti-6Al-4V alloy. The investigation had been performed in order to find the best tool material performance when dry drilling ...
The Design and analysis of a HA/PLA pedicle screw for spinal fusion
(University of Missouri--Columbia, 2011)
Metallic pedicle screws have been widely used in the orthopaedic field to treat spinal diseases. Although spinal screws have improved over the last few decades, there is still sometimes a need for a second painful surgery ...
A comprehensive simulation-based methodology for the design and optimization of orthopaedic internal fixation implants
(University of Missouri--Columbia, 2011)
Internal fixation implants are widely used by orthopaedic surgeons to stabilize various types of fractures in injured patients. However, the irregular geometry of the human skeletal system, as well as the significant ...
High strain rate behavior of graphene reinforced polyurethane composites
(University of Missouri--Columbia, 2012)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] A compressive Split Hopkinson Pressure bar (SHPB) is used to investigate the dynamic mechanical behaviors of Graphene-reinforced-polyurethane composites ...
Evaluation of novel hovering strategies to improve gravity-tractor deflection merits
(University of Missouri--Columbia, 2011)
The gravity-tractor (GT) consists of a spacecraft hovering inertially over a small asteroid. This equilibrium state is achieved by the action of a pair of engines that balance the gravitational acceleration. Due to Newton's ...
Investigation of flow behavior inside ejector pumps using finite difference technique
(University of Missouri--Columbia, 2012)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] A complete numerical model has been developed to characterize the performance under different flow conditions. Finite Difference-based method was used ...
Characterization and nondimensional analysis of a variable speed centrifugal pump
(University of Missouri--Columbia, 2014)
When dealing with centrifugal pumps in the aerospace field, current industry standards dictate the use of single speed drive pumps. The performance of these pumps is then modulated using simply an electromechanical valve, ...
The study of dental composites containing hydroxyapatite nanofillers
(University of Missouri--Columbia, 2010)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Dental composites have received widespread clinical acceptance as alternative restorative materials to dental amalgam for their better aesthetic ...
Fabrication and characterization of novel transparent laminated glass-composite panels for dynamic load mitigation
(University of Missouri--Columbia, 2014)