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Galilean moon tour using simplified trajectory computational techniques
(University of Missouri--Columbia, 2006)
It is desired to find a trajectory for a spacecraft that will capture into an orbit about Jupiter and then subsequently capture into an orbit about each of the Galilean moons. The two main variables are the mass ratio, ...
Theoretical and experimental investigation of oscillating heat pipes
(University of Missouri--Columbia, 2006)
A mathematical model describing the oscillation characteristics of slug flow in a capillary tube is presented. The model considers the vapor bubble as the gas spring for the oscillating motions in a capillary tube including ...
Applying and analyzing robust modern control on uncertain hydraulic systems
(University of Missouri--Columbia, 2006)
In this work modern robust control systems are designed and compared to standard techniques for a hydraulic implement system. The system includes an independent metering valve (IMV) and a variable displacement pump. The ...
Experimental investigation of nanofluid oscillating heat pipes
(University of Missouri--Columbia, 2006)
An experimental investigation was conducted of oscillating heat pipes (OHP) charged with diamond nanofluid. By combining the high thermal conductivity of nanofluids with the high heat transport rate of OHPs, a new type of ...
Modeling, design and control of forced-feedback metering poppet valve system
(University of Missouri--Columbia, 2006)
This research explores valve design, dynamic modeling, and techniques to achieve flow control for a forced-feedback metering poppet valve system. In particular, nonlinear and linear models of a forced feedback configuration ...
Modeling and analysis of nonlinear biological systems
(University of Missouri--Columbia, 2007)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] This dissertation focuses on the modeling and analysis of a set of biological phenomenon at a cellular (Part I) and systems (Part II) level. In Part ...
Direct contact heat exchanger development
(University of Missouri--Columbia, 2007)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The purpose of this work was to develop tools that guide the design of a direct contact heat exchanger for small-scale commercial and/or residential ...
Modeling of selective laser sintering of single-component metal powders
(University of Missouri--Columbia, 2006)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Selective Laser Sintering (SLS) is a rapid prototyping technology which enables freeform fabrication of complex-geometry components directly from ...
Patient specific bone remodeling and finite element analysis of the lumbar spine
(University of Missouri--Columbia, 2007)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The body of work outlined here relates generally to mechanical engineering research in the area of biomechanics. More specifically this work focuses ...
An integrated approach for characterization of properties and mesostructure for FDM Ultem 9085
(University of Missouri--Columbia, 2010)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The Fused Deposition Modeling (FDM) process is a layered prototyping technique used to build prototypes out of thermoplastic materials. It is currently ...
Experimental investigation of a novel disc oscillating heat pipe and heat conduction effect on the startup of oscillating motion
(University of Missouri--Columbia, 2009)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] A new disc oscillating heat pipe has been developed and tested for use in high heat flux applications with a localized heat source. The results show ...
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 ...
Modeling of thin film evaporation heat transfer and experimental investigation of miniature heat pipes
(University of Missouri--Columbia, 2008)
The heat pipe, as one of the most efficient heat transport devices, is a peerless choice in the electronic cooling field. In order to better understand the heat transfer mechanisms of the heat pipe, a heat transfer model, ...
A comparison of modeling techniques: using the finite element method to determine local displacements in a human hip
(University of Missouri--Columbia, 2007)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Artificial hip implant surgery is required by approximately 120,000 Americans each year. A typical hip replacement requires the surgical insertion of ...
Characterization of mechanical properties of fused deposition modeling manufactured polycarbonate composites
(University of Missouri--Columbia, 2007)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The use of composites in all products - from sporting goods to bridges to satellites - is increasing due to the ability of composite structures to ...
Investigation of static interfacial fracture in orthotropic-orthotropic composite bimaterials using photoelasticity
(University of Missouri--Columbia, 2009)
The effects of static Mode I (opening mode) and mixed-mode (both Mode I - opening mode and Mode II - shear mode present) loading on orthotropic-orthotropic bimaterial interface cracks and isotropic-orthotropic bimaterial ...
Mean grain size estimation for copper-alloy samples based on attenuation coefficient estimates
(University of Missouri--Columbia, 2011)
A polycrystalline metal's grain size affects its mechanical properties; therefore, the ability to effectively and easily monitor grain size during a manufacturing process is critical. Conventional destructive tests utilized ...
Thermal-mechanical analysis of a low-enriched uranium foil based annular target for the production of molybdenum-99
(University of Missouri--Columbia, 2011)
One of the US department of Energy's global threat reduction initiative goals is to eliminate the use of high-enriched uranium from the production of the radio-isotope Molybdenum-99. One strategy to achieve this goal is ...
Design and simulation analysis of MEMS parallel plate capacitor models for voltage conversion and power harvesting
(University of Missouri--Columbia, 2011)
In environment, unwanted and undamped vibrations are abundantly available which can be converted into electrical energy and used for energy harvesting. This paper contains the design, modeling and simulation results of ...
Design and optimization of a Mars sample return mission with nuclear thermal rockets
(University of Missouri--Columbia, 2011)
Nuclear thermal propulsion (NTP) is recognized as the only solution to human exploration of the near planets during the next several decades, but NTP currently receives little funding for development. In order to foster ...