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- Creators: Mechanical and Aerospace Engineering Program
- Member of: Barrett, The Honors College Thesis/Creative Project Collection
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Description
"Damietta" is a graphic novel that tells the story of my grandparents, Aziza and Mostafa, and their separate journeys from Egypt to the United States to pursue an education. Using elements of color, form, and narrative style, the graphic novel seeks to put the reader into the perspective of a young immigrant seeking a future in an entirely new land. In completing this project, I had to interview my grandparents, illustrate 51 pages on a computer, transpose interviews into a first person story, and learn how to publish a book. As a result of this process, I learned it is wise to start early, make a consistent work schedule, and make multiple rounds of revisions.
ContributorsDeadrick, Samuel W (Author) / Brown, Keith (Thesis director) / Button, Melissa (Committee member) / Mechanical and Aerospace Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
Emission Spectroscopy is a powerful tool for the identification of mineralogical samples and has been used for decades in labs to study the geology of Earth and Mars. However, the instruments needed to make these measurements are large, expensive and sensitive pieces of equipment that are too cumbersome to use in the field. There are some commercial products that attempt to work in the field, however they perform this task poorly, often resulting in limited applications, poor performance or not being truly portable. My thesis utilizes the TES family of planetary instruments as a source of inspiration for creating a truly portable Fourier Transform InfraRed spectrometer. From this initial design phase, it appears that it is possible to build an instrument with vastly improved capabilities over the current systems on the market. This roughly 12 inch by 7 inch by 8 inch device with a 3-inch diameter telescope is capable of achieving a SNR of over 1000 during a 5 minute scan of a sample allowing for 5 sigma (99.99994% Confidence) identification of 1% spectral features from 5 um to >60 um making this instrument a one of a kind device with high application potential, not only for field geologist but for the future of manned exploration of space. Currently an accurate measurement of costs is not available, however with more development and optimization a total cost of around $50K is feasible while still maintaining the same performance characteristics. If the costs can fall within an acceptable range, this device will not only be technically impressible but viable from a financial standpoint as well.
ContributorsFagan, Ryan Alexander (Author) / Christensen, Phil (Thesis director) / Ruff, Steve (Committee member) / Mechanical and Aerospace Engineering Program (Contributor, Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
Ensuring that people across the globe have enough water and electricity are two large issues that continue to grow. This study performs a test on whether using solar photovoltaic modules to shade water can potentially help diminish the issues of water and power. Using the setup of a PV module shading water, a stand-alone PV module, and unshaded water, it was found that shading water can reduce evaporation and lower PV module operating temperature at the same time. Using averaged data from two days of testing, the volume per unit surface area of water that evaporated per hour was 0.319 cm3/cm2 less for the shaded water compared to the unshaded water. The evaporation rates found in the experiment are compared to those of Lake Mead to see the amount of water lost on a large scale. For the operating temperature of the PV module, the module used for shading had a consistently lower temperature than the stand-alone module. On the first day, the shading module had an average temperature 5.1 C lower than the stand-alone module average temperature. On day two, the shading module had an average temperature 3.4 C lower than the stand-alone module average temperature. Using average temperatures between the two days from 10:30am and 4:45pm, the average daily temperature of the panel used for shading was 4.5C less than the temperature of the stand-alone panel. These results prove water shading by solar PV modules to be effective in reducing evaporation and lowering module operating temperature. Last, suggestions for future studies are discussed, such as performance analysis of the PV modules in this setting, economic analysis of using PV modules as shading, and the isolation of the different factors of evaporation (temperature, wind speed, and humidity).
ContributorsLee, John C (Author) / Phelan, Patrick (Thesis director) / Roedel, Ronald (Committee member) / Dean, W.P. Carey School of Business (Contributor) / Mechanical and Aerospace Engineering Program (Contributor, Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
Nuclear power has recently experienced a resurgence in interest due to its ability to generate significant amounts of relatively clean energy. However, the overall size of nuclear power plants still poses a problem to future advancements. The bulkiness of components in the plant contribute to longer construction times, higher building and maintenance costs, and the isolation of nuclear plants from populated areas. The goal of this project was to analyze the thermal performance of nanocrystalline copper tantalum (NC Cu-Ta) inside the steam generator of a pressurized water reactor to see how much the size of these units could be reduced without affecting the amount of heat transferred through it. The analysis revealed that using this material, with its higher thermal conductivity than the traditional Inconel Alloy 600 that is typically used in steam generators, it is possible to reduce the height of a steam generator from 21 meters to about 18.6 meters, signifying a 11.6% reduction in height. This analysis also revealed a diminishing return that occurs with increasing the thermal conductivity on both reducing the required heat transfer area and increasing the overall heat transfer coefficient.
ContributorsRiese, Alexander (Author) / Phelan, Patrick (Thesis director) / Bocanegra, Luis (Committee member) / Mechanical and Aerospace Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
Kokuji are a specific type of character, or Sinograph, present in Japanese script. Kokuji are differentiated from “normal” Sinographs in Japanese, kanji, by the origin. Kokuji are Sinographs of Japanese origin while other kanji in Japanese are of Chinese origin. The purpose of this paper was to explore how this kind of character has changed since it was first identified and the implications these changes have on Japanese identity. This essay is split into three chapters past the introduction. The first chapter explains the terminology used in the rest of the paper, how Sinographs work, and explores similar phenomena in other scripts. The second chapter focuses on the status of kokuji during two periods of Japanese history, the Edo period (1603-1868) and the Meiji period (1868-1912). The Edo period is relevant because during this period kokuji were first recognized as entities separate from normal kanji. The Meiji period is important because it marks the shift into modern Japan, and it started the linguistic and orthographic reforms that would continue until the late twentieth century. The last chapter takes a closer look at the linguistic reforms that took place during the Taishō period and the Shōwa periods. The Taishō period has Japan still trying to become a “modern” nation and continues some of the language reform from the Meiji period. The Shōwa period post-World War II enacts many of the language reforms that shape modern Japanese language. Through these linguistic reforms we can figure out why kokuji have fallen out of use and why the remaining ones are somewhat common.
ContributorsReyes, Emiliano (Author) / Oh, Young (Thesis director) / Hedberg, William (Committee member) / Mechanical and Aerospace Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
Current prosthetic designs have limitations with properly representing the full range of motion that a human elbow provides. The structure of the biological elbow was analyzed to assess how it produces the flexion/extension and pronation/supination movement. The humerus and ulna have a hinge joint relationship, the humerus acts as a concave cylinder and the ulna acts as a convex cylinder, and the radius and ulna have a pivot joint relationship, the radius rotates around the ulna on a single axis. The joint cavity is responsible for flexion/extension and pronation/supination and also provides lubrication and strength of the elbow joint. A new design of a prosthetic elbow joint was created to mimic human elbow movements. The design uses a ball-and-socket socket joint that allows for flexion/extension and pronation/supination movement while incorporating a hydrogel lining to provide lubrication and restriction of pronation/supination to not go beyond human capacity. This joint was designed to be assembled from the back to the front; the socket has a cap on the outside that would allow for the ball to be inserted inside the socket and the cap be placed onto the socket. Once the final design and assembly process was completed, analysis of the design was performed to determine whether the design would be functional and reliable. The analysis concluded that the design and the material chosen for the design would not result in fracture and would also result in a large factor of safety, thus indicating that the prosthetic joint would not be easily damaged. Further research and development of this prosthetic elbow joint could be performed to allow it to be interchangeable with hinge joints that are currently used. Future work will include further research on the hydrogel lubricant, further analysis of the design and possible design modifications to allow for use in current practices and to account for the weak points in the current design. In summary, a successful redesign of the elbow joint prosthetic that provides low friction flexion/extension as well as pronation/supination movement will better serve the needs of individuals with amputation.
ContributorsHuffman, Randee Lee (Author) / James, Abbas (Thesis director) / David, Vowels (Committee member) / Mechanical and Aerospace Engineering Program (Contributor) / School of Human Evolution & Social Change (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
The overall goal of this paper is to promote wellness, exercise and positive mental health. To encourage this goal, insight on the benefits of worksite wellness programs will be provided. Current worksite wellness programs focus minimally on the mental health benefits of exercise. Instead they focus on physiological results that come with worksite wellness programs. Exercise can provide both physiological and psychological health benefits (Ramirez & Wipfli, 2012). There should be more emphasis on mental health benefits of worksite wellness programs to provide positive mental health benefits in the workplace.
There are many different types of worksite wellness programs such as group fitness, on-site facilities and health allowances. It is important to vary wellness activities due to individuals having different fitness and health motivation. This implementation can become costly and require resources and support that many companies do not want to provide without successful results. Focusing on the psychological health benefits to such programs will allow companies to recognize the increase in productivity and positive work environment that result in worksite wellness programs. This will allow not only employees to benefit from the implementation of such programs but also the succession of the company.
This paper will explore ways to seek future enhancements within worksite wellness programs. Individuals will be given ways to positively contribute to work environments while maintaining healthy lifestyles. Companies will also better understand the importance that top recruits in the industry see within these types of programs. Through worksite wellness programs, employees will be provided with the tools necessary to improve their physical and mental health, while companies will have a more positive work environment as a result.
There are many different types of worksite wellness programs such as group fitness, on-site facilities and health allowances. It is important to vary wellness activities due to individuals having different fitness and health motivation. This implementation can become costly and require resources and support that many companies do not want to provide without successful results. Focusing on the psychological health benefits to such programs will allow companies to recognize the increase in productivity and positive work environment that result in worksite wellness programs. This will allow not only employees to benefit from the implementation of such programs but also the succession of the company.
This paper will explore ways to seek future enhancements within worksite wellness programs. Individuals will be given ways to positively contribute to work environments while maintaining healthy lifestyles. Companies will also better understand the importance that top recruits in the industry see within these types of programs. Through worksite wellness programs, employees will be provided with the tools necessary to improve their physical and mental health, while companies will have a more positive work environment as a result.
ContributorsJohnson, Sydney Rae (Author) / Hoffner, Kristin (Thesis director) / Marsit, Joseph (Committee member) / Mechanical and Aerospace Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
This honors thesis explores and models the flow of air around a cylindrical arrow that is rotating as it moves through the air. This model represents the airflow around an archery arrow after it is released from the bow and rotates while it flies through the air. This situation is important in archery because an understanding of the airflow allows archers to predict the flight of the arrow. As a result, archers can improve their accuracy and ability to hit targets. However, not many computational fluid dynamic simulations modeling the airflow around a rotating archery arrow exist. This thesis attempts to further the understanding of the airflow around a rotating archery arrow by creating a mathematical model to numerically simulate the airflow around the arrow in the presence of this rotation. This thesis uses a linearized approximation of the Navier Stokes equations to model the airflow around the arrow and explains the reasoning for using this simplification of the fully nonlinear Navier Stokes equations. This thesis continues to describe the discretization of these linearized equations using the finite difference method and the boundary conditions used for these equations. A MATLAB code solves the resulting system of equations in order to obtain a numerical simulation of this airflow around the rotating arrow. The results of the simulation for each velocity component and the pressure distribution are displayed. This thesis then discusses the results of the simulation, and the MATLAB code is analyzed to verify the convergence of the solution. Appendix A includes the full MATLAB code used for the flow simulation. Finally, this thesis explains potential future research topics, ideas, and improvements to the code that can help further the understanding and create more realistic simulations of the airflow around a flying archery arrow.
ContributorsCholinski, Christopher John (Author) / Tang, Wenbo (Thesis director) / Herrmann, Marcus (Committee member) / Mechanical and Aerospace Engineering Program (Contributor) / School of Mathematical and Statistical Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
This experiment analyzed the degradation mechanisms in polymer matrix composite (PMC) samples after more than 50 years of simulated exposure to hygrothermal conditioning. This strong, form-adaptive, lightweight material is suitable for use on critical structures including nuclear powerplants and spacecrafts as primary reinforcers to improve fracture toughness. Current literature regarding PMC material has a poor understanding of its delamination trends and varying interphase properties that determine its overall reliability under extreme weather conditions. This paper will evaluate the long-term impact from exposure to heat and humidity regarding the material’s stiffness and degradation to confirm PMC’s reliability for use in structures that undergo these conditions. To study this phenomenon, aged and unaged PMC samples were analyzed on the nanoscale using PeakForce Quantitative Nanomechanical mode (PF-QNM) of Atomic Force Microscopy with an indentation tip no greater than 10nm in radius. This paper compares this testing method to the results from recent research on other microscopy modes to discuss the validity of the PF-QNM model as it is used for this analysis. The data obtained allowed for analysis of crack propagation and quantification of strength in interphase between the composite’s constituents. This research verifies the testing method for which a comprehensive understanding of the environmental influences on PMC mechanical properties could be achieved.
ContributorsTotillo, Anita (Co-author, Co-author) / Yekani Fard, Masoud (Thesis director) / Patel, Jay (Committee member) / Mechanical and Aerospace Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
This paper discusses the possibility of utilizing 2D molybdenum disulfide (MoS2) as a nanozyme to detect dopamine colorimetric assays, first by detecting color change in liquid solutions due to oxidation and then second on paper-based assays. MoS2 samples dispersed in methylcellulose (MC) solution were prepared using liquid-phase exfoliation through sonication. The dopamine (DOPA) and hydrogen peroxide (H¬¬2O2) solutions were prepared separately in specific concentrations. The solutions were mixed in a well plate and colorimetric results were analyzed by a plate reader, revealing a quantitative relationship between dopamine concentration and absorbance. Subsequent testing was conducted using paper assays, where combined solutions of DOPA and H2O2 were dropped onto paper with printed wax wells that contained dried MoS2. An analysis of the color change was conducted using a smartphone application called Color Grab to detect the red, green, and blue (RGB) values. Plotting the RGB results across the dopamine concentrations revealed a positively correlated relationship between the two factors, suggesting that a predictive model could be developed to predict dopamine concentrations based on measured colorimetric values.
ContributorsNalla, Akshay (Co-author, Co-author) / Wang, Qing Hua (Thesis director) / Green, Alexander (Committee member) / Mechanical and Aerospace Engineering Program (Contributor) / Materials Science and Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05