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Specific bio-modeling and analysis techniques at cellular and systems level
(University of Missouri--Columbia, 2006)
Modeling approaches are developed for two different levels, cellular (Part I) and systems (Part II), and used to develop insights into system performance. PART I consists of three chapters focusing on computational ...
Torque ripple attenuation for an axial piston swash plate type hydrostatic pump: noise considerations
(University of Missouri--Columbia, 2006)
The main goal of this work is to reduce the disturbing noise generated by axial piston swash plate type hydrostatic pumps by attenuating the shaft torque variation. The analysis begins by deriving the equation of the shaft ...
Advanced analysis of short-fiber polymer composite material behavior
(University of Missouri--Columbia, 2006)
Short-fiber polymer composites experience widespread use in many industrial applications, where the orientation states of the short-fibers within the polymer matrix define the material properties of the composite structure. ...
Exploratory development of VARIM process for manufacturing high temperature polymer matrix composites
(University of Missouri--Columbia, 2005)
This research focuses on an exploratory development of vacuum assisted resin infusion molding (VARIM) process for manufacturing high temperature polymer composite materials. High temperature matrix composites are needed ...
Finite element analysis of residual stress generation during spot welding and its affect on fatigue behavior of spot welded joints
(University of Missouri--Columbia, 2005)
This dissertation presents the finite element based prediction of residual stress generation in a spot welded joint during the spot welding process and the effects of residual stress on fatigue behavior of a spot welded ...
Development of an integrated approach combining artificial neural network material based on modeling with finite element analysis of forming processes
(University of Missouri--Columbia, 2005)
The use of a finite element model for design and analysis of a metal forming processes is limited by the incorporated material model's ability to predict deformation behavior over a wide range of operating conditions. ...
Mechanical and thermal buckling of thin films
(University of Missouri--Columbia, 2005)
Devices with feature size on the order of one micrometer have found widespread applications in science and engineering. MEMS, is a rapidly growing technology for the fabrication of miniature devices which provides a way ...
Analysis of heat transfer in subcooled metal powder subjected to pulsed laser heating
(University of Missouri--Columbia, 2005)
The interaction of metal powder and pulsed laser heat flux is investigated on two levels, the powder bed level and the particle level. The locations of the thermal penetration depth and the liquid-solid interface are ...
Comprehensive optimization for thermoelectric refrigeration devices
(University of Missouri--Columbia, 2005)
A large market is currently in place for which thermoelectric (TE) technology can provide diverse energy solutions. This market should continue to grow as improvements are made to TE materials. In the last 10-15 years, ...
X-ray topography techniques for the analysis of laser irradiated silicon
(University of Missouri--Columbia, 2005)
There is currently much interest in femtosecond scale laser interactions with materials. Comparison of the damage produced by the femtosecond laser pulses to the longer laser pulses is also of interest. This study examined ...
A generalized approach for calculation of the eigenvector sensitivity for various eigenvector normalizations
(University of Missouri--Columbia, 2005)
Sensitivity analysis is an important step in any gradient based optimization problem. Eigenvalue and Eigenvector Sensitivity Analysis has been a major area for more than three decades in structural optimization. An efficient ...
System modeling and control design of a two-stage metering poppet-valve system
(University of Missouri--Columbia, 2006)
The goal of this work is to develop mathematical models, stability criteria, and control designs for a two-stage poppet valve system with a simple back-side pipeline condition that may be used in a valve stack to create ...
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 ...
Thermal-mechanical analysis of targets for high volume production of molybdenum-99 using low-enriched uranium
(University of Missouri--Columbia, 2009)
Techenetium-99m is diagnostic radioactive medical isotope that is currently used 30,000 times a day in the United States. All supplies of techenetium-99m's parent isotope molybdenum-99 currently originate from nuclear ...
Modeling, verification, optimal design of nonlinear valve spring
(University of Missouri--Columbia, 2009)
The objective of this study is the optimal design of helical spring based on dynamic criteria. The most important dynamic performance criterion of a helical spring is the resonance behavior, including dynamic stress, coil ...
A single-sided access simultaneous solution of acoustic wave speed and sample thickness for isotropic materials of plate-type geometry
(University of Missouri--Columbia, 2006)
In ultrasonic nondestructive evaluation, acoustic waves are used to inspect and characterize materials. Two commonly measured parameters are material thickness and acoustic wave speed in the material. These parameters are ...
A study of parametric excitation applied to a MEMS tuning fork gyroscope
(University of Missouri--Columbia, 2007)
The current MEMS ( gyroscopes which normally use the electro static force to excite the comb drive are faced with the limitations such as low precision, coupling problem, and poor robustness. We propose to use parametric ...
Advanced analysis and design of polymer sheet extrusion
(University of Missouri--Columbia, 2007)
A manufacturing process design methodology is presented which can be used to improve the production of polymer components manufactured via the extrusion. The design methodology employs polymer process modeling, design ...
Nonlinear mechanics and testing of highly flexible one-dimensional structures using a camera-based motion analysis system
(University of Missouri--Columbia, 2006)
Both experimental and theoretical investigations are conducted for the dynamics of cables and strings. The exact equations of motion for finite but small amplitude vibration of string were derived based on a fully nonlinear ...
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 ...