School of Mechanical Engineering Theses and Dissertations
Original work in partial fulfillment of a graduate degree in the School of Mechanical Engineering.
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Recent Submissions
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Long-duration robot autonomy: From control algorithms to robot design
(Georgia Institute of Technology, 2020-07-27)The transition that robots are experiencing from controlled and often static working environments to unstructured and dynamic settings is unveiling the potential fragility of the design and control techniques employed to ... -
Thermodynamic and economic considerations for low-temperature electrochemical nitrogen fixation technologies
(Georgia Institute of Technology, 2020-07-23)The continuous and rapid expansion of society has created increasing stress in global resources such as water, nutrients, and minerals. The development of technologies that aid in the industrialized production of these ... -
Computational investigation of flow fields and detailed chemistry impacts on ignition delays
(Georgia Institute of Technology, 2020-07-27)This work investigated the impacts of a complex piston head geometry on the aerodynamics and chemical kinetics in a Rapid Compression Machine. Utilizing 2D axisymmetric Computational Fluid Dynamics, a single stage compression ... -
Characterizing the mechanical, transport and adhesion properties of hydrogels using indentation method
(Georgia Institute of Technology, 2020-07-21)Hydrogels are crosslinked polymer networks that imbibe a large amount of water. Various hydrogels exist both in nature and in engineering applications. The mechanical, transport and adhesion properties of hydrogels are all ... -
Surface qualification toolpath optimization for hybrid manufacturing
(Georgia Institute of Technology, 2020-07-21)Hybrid manufacturing machine tools have been shown to have great potential in revolutionizing the manufacturing of components by combining both additive manufacturing (AM) and subtractive manufacturing (SM) processes on ... -
Qualification of laser powder bed fusion processed 17-4 PH stainless steel as a function of powder condition
(Georgia Institute of Technology, 2020-07-21)The metal additive manufacturing process of laser powder-bed fusion (LPBF) presents a challenge to develop qualified processes to match the rapid pace of technology development. An aspect of the LPBF process where this ... -
A carbon nanotube optical rectenna for energy harvesting
(Georgia Institute of Technology, 2020-07-20)The optical rectenna (rectifying antenna) is a burgeoning alternative solar technology that incorporates an antenna to capture electromagnetic radiation and a diode that rectifies the a.c. antenna oscillations into useable ... -
Stiffening the posterior rat sclera to provide neuroprotection in glaucoma
(Georgia Institute of Technology, 2020-07-22)Glaucoma is the leading cause of irreversible blindness in the world, affecting approximately 80 million people in the year 2020. This degenerative optic neuropathy is characterized by retinal ganglion cell (RGC) death, ... -
Outer race fault identification under unknown rotational speed and low sampling rate
(Georgia Institute of Technology, 2020-07-14)Rolling element bearing fault identification is an important sub-topic of predictive health monitoring. Most state-of-the-art fault identification approaches utilize bearing configuration, shaft rotational speed and/or ... -
Development and evaluation of interfacial structures for hybrid manufacturing
(Georgia Institute of Technology, 2020-07-14)Hybrid manufacturing is a combination of additive (deposition) and subtractive (machining) manufacturing in a single machine tool. Such a system can be used for near net shape manufacturing and component repair using either ... -
Characterization of algorithms and performance of a fine-resolution active interrogation system
(Georgia Institute of Technology, 2020-07-06)Active interrogation is a crucial tool in modern applications of nonintrusive assay: x- and gamma-ray interrogation systems are commonly employed in cargo inspection as well as in medical imaging, among other applications. ... -
Optimization of residential microgrids using black-box modeling methods
(Georgia Institute of Technology, 2020-07-06)The optimization of a residential microgrid to respond to demand response signals that increase the dispatchability of locally generated solar photovoltaic (PV) energy while reducing total energy cost is investigated. The ... -
Bayesian edge analytics of machine process and health status in an IoT framework
(Georgia Institute of Technology, 2020-07-21)Using modern machine learning tools and embedded computing, a low-cost, integrated data acquisition platform is proposed in this work. Built on modern, open-source hardware and software, this platform enables high-quality ... -
Edge-based machine monitoring architectures incorporating OPC UA controller data
(Georgia Institute of Technology, 2020-07-22)The usage of external sensors for machine health monitoring is becoming more popular. A variety of methods for monitoring the condition of CNC machines have been developed by researchers. This study focuses on automation ... -
Thermodynamics and thermal-fluid transport of a dual-stage sodium thermal electrochemical converter (Na-TEC)
(Georgia Institute of Technology, 2020-06-09)The sodium thermal electrochemical converter (Na-TEC) is a heat engine that generates electricity through the isothermal expansion of sodium ions within a β″-alumina solid-electrolyte. The Na-TEC can thermodynamically ... -
Schallamach waves and friction-induced self-oscillations in a prototypical belt drive
(Georgia Institute of Technology, 2020-06-11)The high adhesive friction between an elastomer and its counterpart generally impedes sliding in the accepted sense. Instead, displacement is accommodated by Schallamach waves of detachment, which are surface wrinkles that ... -
The effectiveness of various chatter detection methods under noisy conditions
(Georgia Institute of Technology, 2020-05-17)Unmanned operations are sought after in manufacturing processes such as milling and lathing. During these processes, the detection and mitigation of machine tool chatter is critical. The veracity of these methods under ... -
Modeling of polymeric materials with applications in active materials and additive manufacturing
(Georgia Institute of Technology, 2020-05-17)Polymeric materials used in the settings of active materials and additive manufacturing offer unique challenges for which high fidelity multiphysics modeling would greatly assist in improving processing and component ... -
Development of dual-fiber array laser ultrasonic system for inspecting and assessing area-array microelectronic packages
(Georgia Institute of Technology, 2020-05-14)Failures in solder ball interconnects makes a microelectronic packaging system inoperable. These failures often result from defects during assembly and/or due to damage accrued from thermo-mechanical and other loads during ... -
Convective and Thermodynamic Analysis of Oscillatory Flow in Pulse Tube Cryocoolers
(Georgia Institute of Technology, 2020-05-15)Pulse tube cryocooler (PTC) is a technology for cryogenic cooling which has no moving part in its cold-end, unlike other types of cryocoolers such as Stirling cryocooler and Gifford-McMahon (GM) cooler. The inherent ...
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