Browsing by Subject "Engineering, Mechanical"
Now showing items 1-18 of 18
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A Nonlinear Harmonic Balance Solver for an Implicit CFD Code: OVERFLOW 2
(2009)A National Aeronautics and Space Administration computational fluid dynamics code, OVERFLOW 2, was modified to utilize a harmonic balance solution method. This modification allows for the direct calculation of the nonlinear ... -
Adaptive Control of an Optical Trap for Single Molecule and Motor Protein Research
(2007-12-13)This research presents the development of an advanced, state-of-the-art optical trap for use in biological materials and nanosystems investigation. An optical trap is an instrument capable of manipulating microscopic particles ... -
An Integrated Online Path Planning and Control Approach for Robotic Sensor Networks
(2010)This dissertation addresses an information-driven sensor path planning problem which has various applications such as robot cleaning, environment monitoring, and manufacturing. Information-driven sensor path planning is ... -
Control and Optimization of Track Coverage in Underwater Sensor Networks
(2007-12-14)Sensor network coverage refers to the quality of service provided by a sensor network surveilling a region of interest. So far, coverage problems have been formulated to address area coverage or to maintain line-of-sight ... -
Coupled-Mode Flutter for Advanced Turbofans
(2010)In the vast majority of measured turbomachinery blade flutter occurrences, the response occurs predominately in a single mode. The primary reason for this single-mode flutter is that for turbomachinery applications ... -
Design with Constructal Theory: Steam Generators, Turbines and Heat Exchangers
(2010)This dissertation shows that the architecture of steam generators, steam turbines and heat exchangers for power plants can be predicted on the basis of the constructal law. According to constructal theory, the flow architecture ... -
Development of a State-of-the-Art Atomic Force Microscope for Improved Force Spectroscopy
(2008-11-19)This research describes the development of a state-of-the-art atomic force microscope (AFM) for improved force spectroscopy. Although the AFM has been used extensively in this field of research, the performance of the instrument ... -
Development of an Efficient Design Method for Non-synchronous Vibrations
(2008-04-24)This research presents a detailed study of non-synchronous vibration (NSV) and the development of an efficient design method for NSV. NSV occurs as a result of the complex interaction of an aerodynamic instability with blade ... -
Effect of van der Waals forces on Retilce Nonflatness in Extreme Ultraviolet Lithography
(2010)Due to the increasing cost of the enhancement techniques in current projection lithographic techniques and the required time in developing new technology's as feasible manufacturing technology, EUVL is considered as ... -
Flutter and Forced Response of Turbomachinery with Frequency Mistuning and Aerodynamic Asymmetry
(2008-04-25)This dissertation provides numerical studies to improve bladed disk assembly design for preventing blade high cycle fatigue failures. The analyses are divided into two major subjects. For the first subject presented in Chapter ... -
Information-driven Sensor Path Planning and the Treasure Hunt Problem
(2008-04-25)This dissertation presents a basic information-driven sensor management problem, referred to as treasure hunt, that is relevant to mobile-sensor applications such as mine hunting, monitoring, and surveillance. The objective ... -
Mechanical and Tribological Study of a Stimulus Responsive Hydrogel, pNIPAAm, and a Mucinous Glycoprotein, Lubricin
(2009)Friction is the resistive force that arises when two contacting surfaces move relative to each other. Frictional interactions are important from both engineering and biological perspectives. In this research I focus on ... -
Optimization of the Aerodynamics of Small-scale Flapping Aircraft in Hover
(2008-06-27)Flapping flight is one of the most widespread mean of transportation. It is a complex unsteady aerodynamic problem that has been studied extensively in the past century. Nevertheless, by its complex nature, flapping flight ... -
Probabilistic Modeling of Decompression Sickness, Comparative Hydrodynamics of Cetacean Flippers, Optimization of CT/MRI Protocols and Evaluation of Modified Angiocatheters: Engineering Methods Applied to a Diverse Assemblage of Projects
(2010)The intent of the work discussed in this dissertation is to apply the engineering methods of theory/modeling, numerics/computation, and experimentation to a diverse assemblage of projects. Several projects are discussed: ... -
Recording Information into DNA
(2009)The objective of this research is to develop the concept of "genetic memory", the storage of information into genetic material, through the demonstration of the feasibility and benefits of recording the time-history of one ... -
Techniques to Assess Acoustic-Structure Interaction in Liquid Rocket Engines
(2008-04-25)Acoustoelasticity is the study of the dynamic interaction between elastic structures and acoustic enclosures. In this dissertation, acoustoelasticity is considered in the context of liquid rocket engine design. The techniques ... -
The Design Of A Nanolithographic Process
(2007-07-02)This research delineates the design of a nanolithographic process for nanometer scale surface patterning. The process involves the combination of serial atomic force microscope (AFM) based nanolithography with the parallel ... -
The Effect of Wing Damage on Aeroelastic Behavior
(2009)Theoretical and experimental studies are conducted in the field of aeroelasticity. Specifically, two rectangular and one cropped delta wings with a hole are analyzed in this dissertation for their aeroelastic behavior.The ...
