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Innovation Of Driving Gear Train System For Developer Unit Of Lexmark Home Printers, Jay A. Crist, Sarah Gore, Kun Xie, Michael Mixoon 2017 University of Tennessee, Knoxville

Innovation Of Driving Gear Train System For Developer Unit Of Lexmark Home Printers, Jay A. Crist, Sarah Gore, Kun Xie, Michael Mixoon

University of Tennessee Honors Thesis Projects

No abstract provided.


Strategic Level Proton Therapy Patient Admission Planning: A Markov Decision Process Modeling Approach, Shengfan Zhang, Ridvan Gedik, Chase Rainwater 2017 University of Arkansas, Fayetteville

Strategic Level Proton Therapy Patient Admission Planning: A Markov Decision Process Modeling Approach, Shengfan Zhang, Ridvan Gedik, Chase Rainwater

Mechanical and Industrial Engineering Faculty Publications

A relatively new consideration in proton therapy planning is the requirement that the mix of patients treated from different categories satisfy desired mix percentages. Deviations from these percentages and their impacts on operational capabilities are of particular interest to healthcare planners. In this study, we investigate intelligent ways of admitting patients to a proton therapy facility that maximize the total expected number of treatment sessions (fractions) delivered to patients in a planning period with stochastic patient arrivals and penalize the deviation from the patient mix restrictions. We propose a Markov Decision Process (MDP) model that provides very useful insights in ...


Evaluation Of The Efficiency Of An Arm-Based Beowulf Cluster Versus Traditional Desktop Computing For High Performance Computing, Nicholas Addiego 2017 University of San Diego

Evaluation Of The Efficiency Of An Arm-Based Beowulf Cluster Versus Traditional Desktop Computing For High Performance Computing, Nicholas Addiego

Undergraduate Honors Theses

In the realm of scientific computing, it has become increasingly important to focus on results driven growth (Kamil, Shalf and Storhmaier). Doing this enables researchers to continue building the rapidly expanding area of scientific discovery. However, with the growth comes a cost of the amount of resources consumed to accomplish these results. Large supercomputers are consuming power at a rate roughly fourteen thousand times that of a traditional American household (U.S. Energy Information Administration). Parallel to this, public consumers have been driving the mobile industry and the research behind it. The need to have faster and faster mobile devices ...


Particle Enrichment In Longitudinal Standing Bulk Acoustic Wave Microfluidics, Mingyang Cui 2017 Washington University in St. Louis

Particle Enrichment In Longitudinal Standing Bulk Acoustic Wave Microfluidics, Mingyang Cui

Engineering and Applied Science Theses & Dissertations

Separation, isolation, and enrichment of targeted nano- and microparticles are critical to a variety of biomedical applications from clinical research (development of therapeutics and diagnostics) to fundamental investigations that require concentration of specific cells from culture, separation of target species from heterogenous mixtures, or controlled perturbation of cells and microorganisms to determine their response to stimuli. Numerous techniques are available for bench-scale and medical settings; however, these traditional approaches are often labor intensive, time-consuming, costly, and/or require modification of the target. Efficiency and specificity are also lacking. Recently, techniques that exploit the similar scales of microfluidic technologies and the ...


Self-Assembled Levitating Clusters Of Water Droplets: Pattern-Formation And Stability, Alexander A. Fedorets, Mark Frenkel, Evgeny Shulzinger, Leonid A. Dombrovsky, Edward Bormashenko, Michael Nosonovsky 2017 Tyumen State University

Self-Assembled Levitating Clusters Of Water Droplets: Pattern-Formation And Stability, Alexander A. Fedorets, Mark Frenkel, Evgeny Shulzinger, Leonid A. Dombrovsky, Edward Bormashenko, Michael Nosonovsky

Mechanical Engineering Faculty Articles

Water forms ordered hexagonally symmetric structures (snow crystals) in its solid state, however not as liquid. Typically, mists and clouds are composed of randomly moving small droplets lacking any ordered structure. Self-organized hexagonally patterned microdroplet clusters over locally heated water surfaces have been recently observed. However, many aspects of the phenomenon are far from being well understood including what determines droplets size, arrangement, and the distance between them. Here we show that the Voronoi entropy of the cluster tends to decrease indicating to their selforganization, while coupling of thermal effects and mechanical forces controls the stability of the clusters. We ...


Microstructure Correlation With Formability For Biaxial Stretching Of Magnesium Alloy Az31b At Mildly Elevated Temperatures, David T. Fullwood, Isaac Chelladurai, Michael P. Miles, John E. Carsley, Raj K. Mishra, Irene J. Beyerlein, Marko Knezevic 2017 Brigham Young University Mechanical Engineering

Microstructure Correlation With Formability For Biaxial Stretching Of Magnesium Alloy Az31b At Mildly Elevated Temperatures, David T. Fullwood, Isaac Chelladurai, Michael P. Miles, John E. Carsley, Raj K. Mishra, Irene J. Beyerlein, Marko Knezevic

All Faculty Publications

Magnesium AZ31B sheets of 2 mm thickness were stretch formed using a 101.6 mm diameter punch at temperatures from 25°C - 150°C, in 25°C increments. Surface strains were measured using a digital image correlation (DIC) method. The punch height vs load curve was found to be the same for temperatures of 25°C and for 50°C, while at 75°C and above the load for a given punch height started to decrease, indicating a potential change in deformation mechanism. Electron Backscatter Diffraction (EBSD) was used to quantify features of the microstructure in the tested specimens. In ...


Creating A Zero + Energy Building Model, Ashley N. Thompson 2017 University of Tennessee at Chattanooga

Creating A Zero + Energy Building Model, Ashley N. Thompson

Honors Theses

The goal of this project was to create an accurate representation of a zero + energy home both for physical experimentation and for numerical modeling. This means that the home does not rely on power from the grid, but only on alternative energy sources such as solar. The project consists of two major subcategories. The electrical portion of the project consists of implementing the energy source and control system, and the mechanical portion of the project consists of thermal analysis, thermal flow simulations, and physical construction. A 50 W solar panel was chosen as an energy source, which directs power to ...


The Development Of A Vacuum Forming System For Kydex® And Other Thermoplastic Sheet, Andrew G. Smith 2017 East Tennessee State University

The Development Of A Vacuum Forming System For Kydex® And Other Thermoplastic Sheet, Andrew G. Smith

Electronic Theses and Dissertations

Vacuum forming is a popular, cost effective method amongst large and small scale applications. The method is used to mold a material to the surface of a mold/pattern in order to create a negative copy for reproduction or an object in positive form. The prototype vacuum forming system developed and documented herein is of a membrane-seal type that consists of three (3) principle parts: radial platen, Hinged Frame and Platen Support Assembly, and a PVC surge tank. Each part is described in detail through design, manufacturing, and testing processes. The design supports functional versatility, small scale molding, and uses ...


Lab Toner Vacuum Cleaner Caddy, Treavor C. Johnson Mr., Robert K. Davis Mr., Spencer K. Sanders Mr., Erin M. Miller Ms. 2017 University of Tennessee, Knoxville

Lab Toner Vacuum Cleaner Caddy, Treavor C. Johnson Mr., Robert K. Davis Mr., Spencer K. Sanders Mr., Erin M. Miller Ms.

University of Tennessee Honors Thesis Projects

No abstract provided.


Silicon Carbide Materials Properties Selection For Mechanical Seal Faces, William Charles Hoskins 2017 University of Tennessee, Knoxville

Silicon Carbide Materials Properties Selection For Mechanical Seal Faces, William Charles Hoskins

University of Tennessee Honors Thesis Projects

No abstract provided.


Semi-Autonomous Golf Cart, Daniel T. Garza, Richard S. Emeott, Matthew E. May, Valerie A. Cherry, Brooke Davidson 2017 University of Tennessee, Knoxville

Semi-Autonomous Golf Cart, Daniel T. Garza, Richard S. Emeott, Matthew E. May, Valerie A. Cherry, Brooke Davidson

University of Tennessee Honors Thesis Projects

No abstract provided.


Determining Drag Forces On 3d Printed Shark Skin And The Conditions In Which Drag Forces Are Reduced, Kayla M. Bartnicke 2017 University of Arkansas, Fayetteville

Determining Drag Forces On 3d Printed Shark Skin And The Conditions In Which Drag Forces Are Reduced, Kayla M. Bartnicke

Mechanical Engineering Undergraduate Honors Theses

ABSTRACT

This project was conducted at the University of Arkansas with access to 3D printers and a water tunnel. The project examines drag forces over 3D-printed shark skin. Shark skin was chosen to be studied because of its unique three-pronged denticle shape and the assumption that this unique shape has a purpose, such as drag reduction.

A shark denticle was designed using SolidWorks software, multiplied 164 times creating a total skin area of 17.5 in2, and printed using both a MakerBot Replicator 2 3D printer and an Ultimaker 2 Go 3D printer. The shark skin was initially printed ...


Ut Lineman Chute, Benjamin D. Jacob, Logan T. Sissom, Stephen E. Brennan, Thomas B. McDavid 2017 University of Tennessee, Knoxville

Ut Lineman Chute, Benjamin D. Jacob, Logan T. Sissom, Stephen E. Brennan, Thomas B. Mcdavid

University of Tennessee Honors Thesis Projects

No abstract provided.


Advanced Catalyst Systems Senior Design Project, Megan Peck 2017 University of Tennessee, Knoxville

Advanced Catalyst Systems Senior Design Project, Megan Peck

University of Tennessee Honors Thesis Projects

No abstract provided.


Peridynamic Models For Fatigue And Fracture In Isotropic And In Polycrystalline Materials, Guanfeng Zhang 2017 University of Nebraska - Lincoln

Peridynamic Models For Fatigue And Fracture In Isotropic And In Polycrystalline Materials, Guanfeng Zhang

Mechanical (and Materials) Engineering -- Dissertations, Theses, and Student Research

To improve design and reliability, extensive efforts has been devoted to understanding damage and failure of materials and structures using numerical simulation, as a complement of theory and experiment. In this thesis, peridynamics is adopted to study fatigue and dynamic failure problems.

Fatigue is a major failure mode in engineering structures. Predicting fracture/failure under cyclic loading is a challenging problem. Classical model cannot directly be applied to problems with discontinuities. A peridynamic model is adopted in this work because of important advantages of peridynamics in allowing autonomous crack initiation and propagation. A recently proposed peridynamic fatigue crack model is ...


Safer Sweep Auger Operation Using Robotics, Nathan A. Wulf 2017 University of Nebraska - Lincoln

Safer Sweep Auger Operation Using Robotics, Nathan A. Wulf

Mechanical (and Materials) Engineering -- Dissertations, Theses, and Student Research

This thesis presents a remotely controlled robotic solution for those who must sometimes enter agriculturally confined spaces in attempts to assist with grain bin cleanout, particularly by manipulating the sweep auger. In 2015 alone, there were at least 47 documented incidents that occurred in agriculturally confined spaces, of which more than half were fatal. While there have been several advancements in the quality and effectiveness of sweep augers, there have been very few that offer the safety and adaptability of the robotic solution proposed. This robotic solution is a four-wheeled, skid-steering style robot with camera and lighting attachments that allow ...


Development Of Peritoneal Microbubble Oxygenation As An Extrapulmonary Treatment For Hypoxia, Nathan Legband 2017 University of Nebraska-Lincoln

Development Of Peritoneal Microbubble Oxygenation As An Extrapulmonary Treatment For Hypoxia, Nathan Legband

Mechanical (and Materials) Engineering -- Dissertations, Theses, and Student Research

Patients affected by a respiratory disease or injury experience a substantially impaired respiratory system and as a consequence are unable to obtain a sufficient amount of oxygen. Hypoxia can quickly result in developing permanent tissue damage or death. Currently, the medical methods of treating hypoxia are mechanical ventilation or extracorporeal membrane oxygenation. However, these treatments are ineffective in certain cases and possess significant additional risks including barotrauma, infection, hemorrhage, and thrombosis.

The extrapulmonary method of peritoneal oxygenation has been investigated by other research groups as a potential alternative to providing supplemental oxygen in hypoxic animals. In peritoneal oxygenation, the peritoneum ...


Applications Of Femtosecond Laser Processed Metallic Surfaces: Leidenfrost Point And Thermal Stability Of Rare Earth Oxide Coatings, Anton Charles Hassebrook 2017 University of Nebraska-Lincoln

Applications Of Femtosecond Laser Processed Metallic Surfaces: Leidenfrost Point And Thermal Stability Of Rare Earth Oxide Coatings, Anton Charles Hassebrook

Mechanical (and Materials) Engineering -- Dissertations, Theses, and Student Research

In this thesis, micro/nano structured surfaces were created through the use of Femtosecond Laser Surface Processing (FLSP). In the first part of the thesis, an experimental investigation of the effects of droplet diameters and fluid properties on the Leidenfrost temperature of polished and nano/microstructured surfaces has been carried out. Leidenfrost experiments were conducted on a stainless steel 304 polished surface and a stainless steel surface which was processed by a femtosecond laser to form Above Surface Growth (ASG) nano/microstructures. Surface preparation resulted in a root mean square roughness (Rrms) of 4.8 µm and 0.04 ...


On The Wetting States Of Low Melting Point Metal Galinstan And Wetting Characteristics Of 3-Dimensional Nanostructured Fractal Surfaces, Ethan Allan Davis 2017 University of Nebraska-Lincoln

On The Wetting States Of Low Melting Point Metal Galinstan And Wetting Characteristics Of 3-Dimensional Nanostructured Fractal Surfaces, Ethan Allan Davis

Mechanical (and Materials) Engineering -- Dissertations, Theses, and Student Research

Exergy, or the availability of energy for useful work, is a critical issue that must be addressed to accommodate growing energy demands of society. Increasing population and steady advancement of technology necessitates novel approaches to the management, conversion, and storage of energy. Per the Lawrence Livermore National Laboratory, approximately 60 percent of the energy used by the United States in 2015 was rejected as waste [1]; a large quantity of which can be assumed to be in the form of heat. Therefore, novel thermal management methods for waste heat are critical to increasing energy efficiency and sustainability in the future ...


Design And Validation Of An In Vivo Long-Term Attachment Capsule Robot, Wanchuan Xie 2017 University of Nebraska-Lincoln

Design And Validation Of An In Vivo Long-Term Attachment Capsule Robot, Wanchuan Xie

Mechanical (and Materials) Engineering -- Dissertations, Theses, and Student Research

The invention of capsule endoscopy (CE) made the non-invasive monitoring of the entire small bowel possible and became the primary means for diagnosing small bowel pathology. In the last decade, capsule robots have been transformed from diagnostic devices into a widely studied biomedical platform with the potential for active locomotion, drug delivery and therapeutic capabilities. To perform accurate on-site drug release and therapy, it is necessary for a capsule robot to be able to attach to the intestinal tissue and maintain its position long-term. Design challenges derive from the task of long-term mucosal adhesion which requires firm, quick-response attachment without ...


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