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Now showing items 61-77 of 77
Analysis and optimization of electroformed dendritic structures as enhanced heat transfer surfaces
(University of Missouri--Columbia, 2009)
Over the past several years, the use of passive cooling devices in electronics such as heat pipes and vapor chambers has increased. Due to their more widespread use, these technologies have a high demand for more adaptable ...
Uneven turns oscillating heat pipes
(University of Missouri--Columbia, 2009)
An experimental investigation on oscillating heat pipes with uneven turns was conducted in order to determine the effect of short turns on the heat transport capability. The shorter turns do not go through both the evaporating ...
Development of tailored preform processing technology for net-shape manufacturing of large monolithic structures
(University of Missouri--Columbia, 2007)
The aim of the present research effort involves exploration of a new processing approach, "Tailored Preform Processing (TPP)" technology for net-shape manufacturing of monolithic structures for the transportation industry. ...
Optimization of electromagnetic acoustic transducers for nondestructive evaluation of concrete structures
(University of Missouri--Columbia, 2008)
There are more than 130,000 prestressed concrete bridges in the United States with about 37,000 bridges being more than 30 years old. Prestressing steel strands are an important construction element used in these bridges ...
Compact oscillating heat pipe and development of fuzzy copper or wicking structures
(University of Missouri--Columbia, 2008)
A central processing units (CPU) calculation speed is limited by the heat it produces. As the number of transistors and the clock speed of CPUs increase they become more powerful, but they also generate more heat which ...
Advanced guidance algorithms for the Ares V cargo launch vehicle
(University of Missouri--Columbia, 2008)
Launch ascent guidance is an area that routinely involves applications of optimization tools and optimal control theory. The vacuum ascent trajectory problem has been formulated as a two-point boundary-value problem with ...
Elastic property prediction of long fiber composites using a uniform mesh finite element method
(University of Missouri--Columbia, 2008)
This research numerically evaluates elastic non-isotropic material properties of fiber reinforced composite materials. Calculations are performed with a finite element mesh composed of a uniform array of three dimensional ...
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 ...
High strain properties of advanced high strength spot welded steels
(University of Missouri--Columbia, 2007)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] This research was conducted to investigate and characterize the high strain rate compressive loading behavior of DP600 GI, an advanced high strength ...
Forced convection in nanofluids over a flat plate
(University of Missouri--Columbia, 2008)
This work analyzes the characteristics, flow development, and heat transfer coefficient of nanofluids under laminar forced convection over a flat plate. Nanofluids are engineered colloids composed of a base fluid and ...
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 ...
Development of a two-dimensional human thermal model for EVA applications
(University of Missouri-Columbia, 2002)
The human thermoregulatory system, with its active and passive components, is difficult to model due to nonlinearities, complex interactions, and a lack of understanding of many of the active thermoregulatory mechanisms. ...
Developing and automating time delay system stability analysis of dynamic systems using the Matrix Lambert W (MLW) function method
(University of Missouri--Columbia, 2009)
Stability analysis of time-delayed (TD) systems is not easy to conduct since the addition of delays within a dynamic model results in irrational system equations. Traditional TD analysis methods involve adding approximations ...
Dynamic study of the piezo-driven pipettes in intracytoplasmic sperm injection
(University of Missouri--Columbia, 2008)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Intracytoplasmic Sperm Injection (ICSI) is regarded as a critical assisted reproductive technology (ART) procedure in which a single spermatozoon is ...
Modeling tools and prototype design of loop heat pipe for electronics cooling
(University of Missouri--Columbia, 2009)
In this dissertation, a set of modeling tools for loop heat pipe (LHP) design is developed, and original analytical models for annular two-phase flow are proposed. LHPs are promising two-phase thermal transport devices for ...
Infiltration and solid-liquid phase change in porous media
(University of Missouri--Columbia, 2009)
Many natural phenomenon and engineering systems involves phase change and infiltration in porous media. Some examples are the freezing of soil, frozen food, water barrier in construction and mining processes, chill casting ...