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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Elemental Mass Quantification from Spectral X-ray Radiographs and Fluorescence using Gauss-Newton and Deep Learning Approaches
(Georgia Institute of Technology, 2020-12-14)The goal of this thesis is to explore elemental mass quantification from spectral X-ray radiographs and X-ray fluorescence. This would provide a nondestructive technique to the IAEA for international safeguards. The entire ... -
Reconstruction of Planar Fuel Concentration in a Diesel Spray from Line-Of-Sight Diffuse Back Illumination Imaging
(Georgia Institute of Technology, 2020-12-07)The main topic of this thesis is to evaluate the use of Abel inversion methods to reconstruct the planar fuel concentration field of a diesel spray using line-of-sight diffuse back-illumination imaging. The Abel transform ... -
Design of a novel electrochemical cell for electrochemical exfoliation of graphite into graphene
(Georgia Institute of Technology, 2020-12-07)The objective of this thesis is to design and test a new electrochemical cell for the mass production of graphene using electrochemical exfoliation of graphite. Although several techniques have been developed by different ... -
Ecologically Inspired Refinement of Engineered Systems
(Georgia Institute of Technology, 2020-12-06)The design stage offers the greatest impact potential on the sustainable outcome of engineered systems and current sustainability-geared tools offer insightful and vital details in the pursuit of more sustainable human ... -
PASSIVATED IMPLANTED PLANAR SILICON (PIPS) DETECTORS FOR MEASUREMENT OF RADIOXENON
(Georgia Institute of Technology, 2020-12-07)Silicon detectors are analyzed as an alternative to plastic scintillators for beta detection based on their higher energy resolution. A radioxenon detection setup was created with the intent of comparing the absolute ... -
High Cycle Fatigue of Additively Manufactured Inconel 625
(Georgia Institute of Technology, 2020-12-09)This research aims to investigate the influence of the microstructure, defect features, and surface roughness on the high cycle fatigue (HCF) strength of IN625 manufactured using L-PBF (Laser Powder Based Fusion) additive ... -
Physics Based Compressive Sensing for Additive Manufacturing Process Monitoring
(Georgia Institute of Technology, 2020-12-06)Sensors play an important role in smart manufacturing. Different types of sensors have been used in process monitoring to ensure the quality of products. As a result, the life-cycle cost of quality control is rising. The ... -
Data-driven Process-Structure-Property Models for Additive Manufactured Ni-base Superalloys
(Georgia Institute of Technology, 2020-12-09)The complexity of the selective laser melting (SLM) process, which has shown success for shaping advanced structural alloys, has concentrated most of the research efforts to develop process-structure-property (PSP) models ... -
Modeling, Simulation, and Control of an Automotive Evaporator
(Georgia Institute of Technology, 2020-12-11)As global climate change continues to affect everyday life, energy efficiency is becoming more crucial. Automotive emissions contribute a sizeable portion of manmade pollution, so a shift to "greener" automobiles has become ... -
Validation of Plant Buzz Operational Data Using Serpent-DYN3D Sequence
(Georgia Institute of Technology, 2020-12-07)The motivation for this work stems from the desire within the nuclear industry to improve the economic efficiency of the fuel cycle by moving to longer operational periods. The primary objective of this thesis is to validate ... -
The Mechanical Design and Optimization of a Wearable Multimodal Health Sensing System
(Georgia Institute of Technology, 2020-12-10)It has been demonstrated that both acoustic measurements and bioimpedance spectroscopy can be useful for noninvasively monitoring the health of the human body, for instance in knee joints and lungs. However, to the best ... -
Trans-skull Ultrasound for Imaging and Therapy
(Georgia Institute of Technology, 2020-12-03)Ultrasound has emerged as a novel modality for the treatment and imaging of brain diseases. When enhanced by circulating microbubble agents, which scatter sound and vibrate in response to the incident ultrasound, it can ... -
A Comparative Analysis of Water-Equivalent Path Length of Tissue Samples using a Fast Monolithic Proton Radiography System
(Georgia Institute of Technology, 2020-12-02)Proton therapy has emerged over the past forty years as a clinically viable form of radiation oncology. With low entry dose, a rise to a sharp maximum, and a steep fall-off to zero dose after the "Bragg Peak", proton therapy ... -
Hydrogen effects on dislocation structures and interactions
(Georgia Institute of Technology, 2020-12-02)Hydrogen embrittlement (HE) is a complex process, in which the interactions of H atoms, vacancies, and dislocations lead to a macroscopic loss of ductility. Although this phenomenon is commonly observed, its microscopic ... -
Mechanical performance characterization of manual wheelchairs using robotic wheelchair operator with intermittent torque-based propulsion
(Georgia Institute of Technology, 2020-12-06)The current manual wheelchair design process lacks consistent and objective connection to performance-based metrics. The goal of this research was to empirically assess over-ground manual wheelchair performances and identify ... -
UTILIZING COMPUTATIONAL TECHNIQUES TO DESIGN A HYBRID VEHICLE FOR THE ECOCAR MOBILITY CHALLENGE
(Georgia Institute of Technology, 2020-12-07)This thesis documents computational techniques and results used in designing a shared-mobility hybrid electric vehicle developed for the Georgia Tech EcoCAR Team, a collegiate engineering team participating in the EcoCAR ... -
Identification of in vivo material properties of ascending thoracic aortic aneurysm: towards noninvasive risk assessment
(Georgia Institute of Technology, 2020-11-19)Advances in imaging techniques and numerical methods have made it possible to investigate biomechanics of the cardiovascular system on a patient-specific level. For the four key components in a in vivo patient-specific ... -
Advanced Piezoelectric Transduction for Acoustic Sensing and Data Transmission
(Georgia Institute of Technology, 2020-12-01)The work developed in this thesis targets two applications relative to piezoelectric transduction for sensing and data transmission purposes. The first project is based on a Surface Acoustic Wave device measuring strains ... -
Dynamics and Topology of Nonlinear and Aperiodic Metastructures
(Georgia Institute of Technology, 2020-12-02)Metamaterials and metastructures (i.e., metamaterial-based finite structures with specified boundary conditions) enable various properties that are not found in ordinary materials and structures. For example, locally ... -
Advancing Photoacoustic Imaging as a Tool for Disease Diagnosis
(Georgia Institute of Technology, 2020-11-19)Photoacoustics is an imaging modality that uses short pulses of laser light to probe tissue for physical properties that have diagnostic value. Applications have been developed widely, including for improved diagnostic ...
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