Open Access. Powered by Scholars. Published by Universities.®

Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

University of Tennessee, Knoxville

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 1 - 30 of 2538

Full-Text Articles in Engineering

Finisher Alignment Project, Thomas Frye Dec 2018

Finisher Alignment Project, Thomas Frye

University of Tennessee Honors Thesis Projects

No abstract provided.


Recommended Corrective Security Measures To Address The Weaknesses Identified Within The Shapash Nuclear Research Institute, Khadija Moussaid, Oum Keltoum Hakam Jun 2018

Recommended Corrective Security Measures To Address The Weaknesses Identified Within The Shapash Nuclear Research Institute, Khadija Moussaid, Oum Keltoum Hakam

International Journal of Nuclear Security

The Shapash Nuclear Research Institute (SNRI) data book was issued by the International Atomic Energy Agency (IAEA) in 2013. The hypothetical facility data book describes the hypothetical site, which is divided into two areas: the low-security area, known as the administrative area, and the very high-security area, known as the protected area. The book contains detailed descriptions of each area’s safety and security measures, along with figures of multiple buildings in both areas, and also includes information about the site’s computer networks.

This paper aims to identify security weaknesses related to the institute’s location, the Administrative Area ...


Actinium-225 Production Via Different Irradiation Beams Of Thorium-232, Naser Burahmah May 2018

Actinium-225 Production Via Different Irradiation Beams Of Thorium-232, Naser Burahmah

Nuclear Engineering Reports

No abstract provided.


Analyzing Memcapacitive Capabilities Of Lipid And Polymer Bilayers For Use In Smart Materials, Megan Pitz May 2018

Analyzing Memcapacitive Capabilities Of Lipid And Polymer Bilayers For Use In Smart Materials, Megan Pitz

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Neuromorphic engineering involves designing artificial neural systems that mimic the way neuron circuits in the brain process information and make computations. It took the fourth most powerful computer in the world (with 705,024 processor cores and 1.4 million GB of RAM) 40 minutes to simulate just one second of human brain activity. This shows a clear difference of energy use in the human brain versus modern computers; neuromorphic engineering could be how we mimic the computing power of the brain to create energy-efficient, neuron-based computers. Memristors and memcapacitors are proposed circuit elements with memory components. Memristors have been ...


Molecular Dynamics Simulations Of Hydrogen Diffusion And Retention Behavior Near Sub-Surface Defects In Tungsten: Towards Predicting Tritium Retention In The Iter Divertor, Emily Nicole Hutchins May 2018

Molecular Dynamics Simulations Of Hydrogen Diffusion And Retention Behavior Near Sub-Surface Defects In Tungsten: Towards Predicting Tritium Retention In The Iter Divertor, Emily Nicole Hutchins

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Molecular Dynamics Simulations of hydrogen diffusion and retention behavior near subsurface defects in tungsten: Towards predicting tritium retention in the ITER divertor

Plasma-facing components within fusion reactors will be exposed to massive particle and thermal loads, which will pose serious material challenges. The plasma-facing component of interest in this project is the divertor, a device that allows for the online removal of the helium reaction product from the deuterium – tritium plasma. The ITER divertor will be constructed from tungsten, which is also a prime candidate for use in future demonstration fusion reactors, because of its superior mechanical properties and low ...


X-Means Clustering Implementing The Gap Statistic For Multiple Positron Emission Particle Tracking, Matthew Herald May 2018

X-Means Clustering Implementing The Gap Statistic For Multiple Positron Emission Particle Tracking, Matthew Herald

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

The most efficient and accurate method for clustering Coincidence Lines (CL) for Positron Emission Particle Tracking (PEPT) is undetermined. A number of methods have been created to perform this task. A novel clustering method featuring x-means is presented using an automated k-value estimator for k-means clustering. Gap statistic is used to select the best k-value. Geant4 Application for Tomographic Emission is used to simulate particles of 50 µCi and the detection and electronic chain associated with the Siemens Inveon Pre-Clinical Scanner. The simulation produces an array of coincident lines (CL) in a format consistent with scanner output. The CL are ...


Device Characterization Of Solar Inverters, Katelyn Alexandria Bolinsky May 2018

Device Characterization Of Solar Inverters, Katelyn Alexandria Bolinsky

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Solar energy is one of the most significant research thrusts in the modern era. Solar inverters are devices used to convert the DC energy of sunlight into AC energy that can be used on the power grid. Typically, they contain silicon; however, new substances such as silicon carbide and gallium nitride are being tested. These materials could increase the efficiency of solar energy, decrease the overall cost, and are potentially more durable than silicon. In order to determine if these new substances can actually benefit the solar industry, they need to be characterized for different attributes with different parameters. As ...


Irradiation Experiment For Living Insect-Based Radiological Dispersal Device, Braden Goddard, Walid Metwally, Ahmad Ababneh May 2018

Irradiation Experiment For Living Insect-Based Radiological Dispersal Device, Braden Goddard, Walid Metwally, Ahmad Ababneh

International Journal of Nuclear Security

People generally associate fear with “nuclear”, “radioactive” and “insects”. It is speculated that a release of radioactive living insects would instill more fear into the general public than a “traditional” style radiological dispersion device (RDD). This paper evaluates the potential threat of an insect-based RDD using experimental data. The results of this project found that insect-based RDDs are an insignificant threat due to the challenges in making insects radioactive enough to pose any danger to humans without killing the insects.


Chassis Production Process, Abigail H. Harr 7741954 May 2018

Chassis Production Process, Abigail H. Harr 7741954

University of Tennessee Honors Thesis Projects

No abstract provided.


Software Defined Radar For Vital Sign Detection, Chandler J. Bauder, James Bates, Steven Engel, James S. Tucker, Fangzhou Liu May 2018

Software Defined Radar For Vital Sign Detection, Chandler J. Bauder, James Bates, Steven Engel, James S. Tucker, Fangzhou Liu

University of Tennessee Honors Thesis Projects

No abstract provided.


Scintillator-Based Uav, Austin Mullen, Chris Haseler, Sarah Davis, Brooke Mcmurrer, Tanner Jefferies, Peyton Lara May 2018

Scintillator-Based Uav, Austin Mullen, Chris Haseler, Sarah Davis, Brooke Mcmurrer, Tanner Jefferies, Peyton Lara

University of Tennessee Honors Thesis Projects

No abstract provided.


Depot For Martian And Extraterrestrial Transport Resupply (Demetr), Emily Beckman, Ethan Vogel, Caleb Peck, Nicholas Patterson May 2018

Depot For Martian And Extraterrestrial Transport Resupply (Demetr), Emily Beckman, Ethan Vogel, Caleb Peck, Nicholas Patterson

University of Tennessee Honors Thesis Projects

No abstract provided.


Sleep Apnea Monitoring System, Samuel Brown, Quillen Blalock, Doug Aaser, Thomas Turner, Shavoshia Leslie, Matthew Carpenter May 2018

Sleep Apnea Monitoring System, Samuel Brown, Quillen Blalock, Doug Aaser, Thomas Turner, Shavoshia Leslie, Matthew Carpenter

University of Tennessee Honors Thesis Projects

No abstract provided.


Ut Football Automated Practice Target, Mary Elizabeth Iannuzzi, Lee Fullam, Lindsay Little, Julia Meyer May 2018

Ut Football Automated Practice Target, Mary Elizabeth Iannuzzi, Lee Fullam, Lindsay Little, Julia Meyer

University of Tennessee Honors Thesis Projects

No abstract provided.


An Examination Of The Au-Ni Phase Diagram For Magneto-Plasmonic Applications, Christopher C. Walker, John Carothers, Michael Roulier, Brandon Rowell May 2018

An Examination Of The Au-Ni Phase Diagram For Magneto-Plasmonic Applications, Christopher C. Walker, John Carothers, Michael Roulier, Brandon Rowell

University of Tennessee Honors Thesis Projects

No abstract provided.


Economic Analysis Of Phosphoric Acid Extraction, Maddy Hayes, Amany Alshibli, Jakob Howell, Jason Eakes May 2018

Economic Analysis Of Phosphoric Acid Extraction, Maddy Hayes, Amany Alshibli, Jakob Howell, Jason Eakes

University of Tennessee Honors Thesis Projects

No abstract provided.


Modeling Root Causes Of Construction Site Fatalities Using Social Network Analysis, Seifeldeen Omar Eteifa May 2018

Modeling Root Causes Of Construction Site Fatalities Using Social Network Analysis, Seifeldeen Omar Eteifa

Masters Theses

In spite of the continuing decrease in accident rates in the US Construction industry, accidents are one of the key factors constraining construction industry in terms of cost and time. Fatality rates in the US are more than other developed countries. Research into accident causation included accident occurrence mechanisms, different levels and types of accident causes as and best practices for accident prevention. These efforts, however, did not focus particularly on fatal accidents and did not prioritize the relationships amongst root causes for accidents. Accordingly, this research’s goal is to quantitatively analyze relationships between fatal accident root causes as ...


Developing Kenya’S Educational Capacity In Nuclear Security Through Nuclear Forensics Research, Hudson Kalambuka Angeyo Apr 2018

Developing Kenya’S Educational Capacity In Nuclear Security Through Nuclear Forensics Research, Hudson Kalambuka Angeyo

International Journal of Nuclear Security

Nuclear energy’s distinctive characteristics give rise to special educational requirements. These requirements are necessary to not only address the danger of nuclear proliferation, but also to build capacity for a secure nuclear fuel circle. In this paper, I assess the status of educational capacity in nuclear security both in response to, and in support of, Kenya’s nuclear power program. I highlight the nuclear security educational infrastructure’s key features in the context of nuclear power, noting the low capacity at Kenyan universities. I identify the steps required to ensure that the country’s dynamic nuclear regulatory infrastructural framework ...


Laser Ablation Synthesis Of Energetic Graphitic Coated Aluminum Nanoparticles, Camille E. Bergin Apr 2018

Laser Ablation Synthesis Of Energetic Graphitic Coated Aluminum Nanoparticles, Camille E. Bergin

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

This poster presents a research initiative in collaboration with the US Army Research Lab (ARL) to synthesize carbon-coated aluminum (Al) nanoparticles (NPs) as energetic materials via laser ablation in organic solutions. Nanomaterials have gained widespread attention recently from an array of scientists and engineers for their desired physical and chemical properties believed to be a product of their high ratio of surface area to volume, thus making them favorable for a wide variety of applications. Specifically, here Al NPs are favored for their energetic characteristics and usually employed as solid-state propellants. However, it is challenging and unsafe to preserve pristine ...


The "Double Standard" Of Nonproliferation: Regime Type And The U.S. Response To Nuclear Weapons Program, Alina Shymanska Mar 2018

The "Double Standard" Of Nonproliferation: Regime Type And The U.S. Response To Nuclear Weapons Program, Alina Shymanska

International Journal of Nuclear Security

There is no doubt that the NPT regime is far from being equal for all states involved. As the predominant hegemonic power since WWII, the United States plays a major role in deciding the fates of non-great power proliferators. This article tries to find the logical explanation of the phenomenon whereby some nuclear proliferators are absolved regardless of their active accumulation of nuclear arsenals while others are labeled as “rogue states” and ordered to disarm. The article suggests that a particular proliferator’s political regime could affect the way in which its state is approached by the U.S., known ...


The Future Of Nuclear Security: A Medical Physicist’S Perspective, Katharine E. Thomson Dec 2017

The Future Of Nuclear Security: A Medical Physicist’S Perspective, Katharine E. Thomson

International Journal of Nuclear Security

Planning for the future of nuclear security is a vital and complex task, requiring cooperation and contribution from many disciplines and industries. This diversity of expertise should include the medical sector, which faces many of the same challenges as the nuclear industry: controlling access to dangerous material, creating a strong security culture, cooperating with the wider world and engaging the public.

Medical physicists, of which the author is one, oversee all aspects of small-scale radiation use. This paper discusses three key areas increasingly important to both medical and nuclear uses of radioactive materials: public engagement, prevention of nuclear and radiological ...


Assessing And Enhancing Nuclear Safety And Security Culture For Small Facilities That Handle Radioactive Material, Solymosi Máté Dec 2017

Assessing And Enhancing Nuclear Safety And Security Culture For Small Facilities That Handle Radioactive Material, Solymosi Máté

International Journal of Nuclear Security

The use of radioactive sources is expanding all over the world and abreast the necessity of the enhancement of its safe and secure application is increasing too. In the nuclear industry, the safety and security are top priorities since decades. They share the same goal, to protect humans from the negative affect of the ionizing radiation. The human component of them is a significant factor and technical solutions can protect us so far and thus the culture for safety and security become a major focus. On the other hand, there are still some contradiction between recommendations and international guidance of ...


The Future Of Nuclear Security In Moroccan Territory After The Creation Of The New Moroccan Agency Of Nuclear And Radiological Safety And Security: Opportunities And Challenges, Amal Touarsi, Amina Kharchaf Dec 2017

The Future Of Nuclear Security In Moroccan Territory After The Creation Of The New Moroccan Agency Of Nuclear And Radiological Safety And Security: Opportunities And Challenges, Amal Touarsi, Amina Kharchaf

International Journal of Nuclear Security

Nowadays, a security regime for protecting nuclear and radiological material—providing an intelligent national regulatory institution and establishing national security laws—is necessary in order for a state to ensure security of nuclear and radiological materials used within its borders.

This paper focuses on discussing the opportunities and challenges facing the future of nuclear security after the creation of the new Moroccan Agency of Nuclear and Radiological Safety and Security.


Evaluation Of Foldable Tractor Roll-Over Protective Structures (Rops) Clearance, Luke Martin Dec 2017

Evaluation Of Foldable Tractor Roll-Over Protective Structures (Rops) Clearance, Luke Martin

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Tractor rollovers are a leading cause of death in the agricultural industry. While rollovers continue to happen, Roll-Over Protective Structures (ROPS) have shown great ability to prevent or reduce the casualties and injuries associated with rollover events. Foldable ROPS provide a practical solution to various issues faced by tractor operators. However, a ROPS is not meant to be used in the folded down position, as they are commonly used.

This study determined the operator protection provided by ROPS in the extended and the folded positions relative to the applicable engineering standards. To accomplish this, six different sized tractors with different ...


Sound-Proof, Fire Resistant, Leak-Free And Super-Insulated Hvac Ducts, James Fitzsimmons Ii, Ahmed Alyousef, Kyle Dirksen, Nathan Ware, William Miller Dec 2017

Sound-Proof, Fire Resistant, Leak-Free And Super-Insulated Hvac Ducts, James Fitzsimmons Ii, Ahmed Alyousef, Kyle Dirksen, Nathan Ware, William Miller

University of Tennessee Honors Thesis Projects

No abstract provided.


An Exploration Of Basic Processes For Aqueous Electrochemical Production Of Hydrogen From Biomass Derived Molecules, Brian Fane Dec 2017

An Exploration Of Basic Processes For Aqueous Electrochemical Production Of Hydrogen From Biomass Derived Molecules, Brian Fane

Doctoral Dissertations

Polymer electrolyte membrane fuel cells(PEMFCs) are energy conversion devices with significant potential. The factors preventing them from becoming widespread concern production and distribution of hydrogen. Developing an efficient hydrogen infrastructure with an approachable rollout plan is an essential step towards the future of fuel cells. Water electrolysis is limited by the thermodynamics of the process, which leads to high electrical consumption and significant materials challenges. Alternative methods for cleanly generating hydrogen while using a lower cell voltage are required. PEM based electrolyzers can operate with a "depolarized anode", whereby they become significantly less power hungry.

This thesis explores two ...


Dynamic In Vivo Skeletal Feature Tracking Via Fluoroscopy Using A Human Gait Model, William Patrick Anderson Dec 2017

Dynamic In Vivo Skeletal Feature Tracking Via Fluoroscopy Using A Human Gait Model, William Patrick Anderson

Doctoral Dissertations

The Tracking Fluoroscope System II, a mobile robotic fluoroscopy platform, developed and built at the University of Tennessee, Knoxville, presently employs a pattern matching algorithm in order to identify and track a marker placed upon a subject’s knee joint of interest. The purpose of this research is to generate a new tracking algorithm based around the human gait cycle for prediction and improving the overall accuracy of joint tracking.

This research centers around processing the acquired x-ray images of the desired knee joint obtained during standard clinical operation in order to identify and track directly through the acquired image ...


Transport Of Water And Ions Through Single-Walled Armchair Carbon Nanotubes: A Molecular Dynamics Study, Michelle Patricia Aranha Dec 2017

Transport Of Water And Ions Through Single-Walled Armchair Carbon Nanotubes: A Molecular Dynamics Study, Michelle Patricia Aranha

Doctoral Dissertations

The narrow hydrophobic interior of a carbon nanotube (CNT) poses a barrier to the transport of water and ions, and yet, unexpectedly, numerous experimental and simulation studies have confirmed fast water transport rates comparable to those seen in biological aquaporin channels. These outstanding features of high water permeability and high solute rejection of even dissolved ions that would typically require a lot of energy for separation in commercial processes makes carbon nanotubes an exciting candidate for desalination membranes. Extending ion exclusion beyond simple mechanical sieving by the inclusion of electrostatics via added functionality to the nanotube bears promise to not ...


Methodology For An Advanced Risk Assessment Of Crud Induced Power Shift Using Coupled Multi-Physics Simulations And A Monte Carlo Scenario Analysis Of The Potential Financial Benefits, Travis Louis Lange Dec 2017

Methodology For An Advanced Risk Assessment Of Crud Induced Power Shift Using Coupled Multi-Physics Simulations And A Monte Carlo Scenario Analysis Of The Potential Financial Benefits, Travis Louis Lange

Doctoral Dissertations

Beginning in the 1970's, power uprates in nuclear power plants began to cause an operational problem called Crud Induced Power Shift (CIPS). Over decades, a method has been developed and refined that has allowed industry to effectively avoid CIPS. However, increasingly challenging economic environments have caused power plants to utilize more aggressive core designs. The problem of CIPS still looms over many reactors as a potential hazard requiring conservative measures. CIPS is due to complex physical and chemical interactions. Current industry methods use multiple single-physics simulations in their analyses. However, improved 3D multi-physics models of CIPS can provide a ...


Determining 235u Enrichment Using A Dual-Energy Approach For Delayed Neutron Measurements, Angela Lynn Lousteau Dec 2017

Determining 235u Enrichment Using A Dual-Energy Approach For Delayed Neutron Measurements, Angela Lynn Lousteau

Doctoral Dissertations

Bulk uranium items are often measured using active neutron interrogation systems to take advantage of the relatively high penetrability of neutrons, providing the ability to quickly and accurately measure uranium masses in large, dense configurations. Active techniques employ an external neutron source to induce fission in the uranium and subsequently measure emitted prompt fission or delayed neutrons. Unfortunately, the emitted neutrons from 235U [uranium-235] and 238U [uranium-238] are, for all practical purposes, indistinguishable; therefore, commonly used systems such as the Active Well Coincidence Counter, the 252Cf [californium-252] Shuffler, and other systems based on measurement of prompt or ...