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Numerical Methods For Predicting The Dynamic Crushing Response And Energy Absorption Of Composite Aluminum Honeycomb Sandwich Structures, Cody R. Volk
Master's Theses
Edgewise crushing responses of composite aluminum honeycomb sandwich structures were predicted using finite element analysis (FEA) software LS-DYNA by modeling the honeycomb as a material with anisotropic properties. The goal of the project was to develop a process for modeling the sandwich structure to rapidly iterate possible solutions for a safer workstation train table. Current workstation tables are too rigid and may cause injury or death in a head-on collision. Experimental compression tests were used to calibrate the aluminum honeycomb core with material type 26 (MAT 26, honeycomb). A published composite tensile test was used to validate the use of …
Using Generative Adversarial Networks To Classify Structural Damage Caused By Earthquakes, Gian P. Delacruz
Using Generative Adversarial Networks To Classify Structural Damage Caused By Earthquakes, Gian P. Delacruz
Master's Theses
The amount of structural damage image data produced in the aftermath of an earthquake can be staggering. It is challenging for a few human volunteers to efficiently filter and tag these images with meaningful damage information. There are several solution to automate post-earthquake reconnaissance image tagging using Machine Learning (ML) solutions to classify each occurrence of damage per building material and structural member type. ML algorithms are data driven; improving with increased training data. Thanks to the vast amount of data available and advances in computer architectures, ML and in particular Deep Learning (DL) has become one of the most …
Design Of A Printed Circuit Board For A Sensorless Three-Phase Brushless Dc Motor Control System, Joshua Castle
Design Of A Printed Circuit Board For A Sensorless Three-Phase Brushless Dc Motor Control System, Joshua Castle
Master's Theses
The use of brushless motors has increased in recent years due to superior performance characteristics compared with alternatives. The operation of a brushless motor is dependent upon a separate controller which is often in the form of a printed circuit board. As such, the size and performance capability of the controller can restrict the performance of the overall motor control system so advancements of these controllers further the potential use of BLDC motors. This project outlines the design of a PCB based, sensorless motor controller for operation of a three-phase BLDC motor powered by a 24 V, high current external …
Effect Of Polymer Design And Coating Formulation On The Water Uptake And Sensitivity Of Acrylic Water-Borne Films, William Z. Thompson
Effect Of Polymer Design And Coating Formulation On The Water Uptake And Sensitivity Of Acrylic Water-Borne Films, William Z. Thompson
Master's Theses
Water-borne latex coatings represent a safer, more user-friendly, and environmentally responsible alternative to solvent-borne coatings, and are growing in popularity each year. However, these coatings often exhibit unfavorable performance when exposed to water for extended periods of time. This prolonged exposure often results in water uptake, which may give rise to other detrimental effects such as a decrease in modulus, blushing or water-whitening, reduced serviceable life, and softening of the film. In this study, various polymer composition latex design spaces are studied to develop an understanding of how water uptake can be modulated and minimized using common synthetic approaches. Factors …
The Design, Testing, And Analysis Of A Constant Jammer For The Bluetooth Low Energy (Ble) Wireless Communication Protocol, Aiku Shintani
The Design, Testing, And Analysis Of A Constant Jammer For The Bluetooth Low Energy (Ble) Wireless Communication Protocol, Aiku Shintani
Master's Theses
The decreasing cost of web-enabled smart devices utilizing embedded processors, sensors, and wireless communication hardware have created an optimal ecosystem for the Internet of Things (IoT). IEEE802.15.4, IEEE802.11ah, WirelessHART, ZigBee Smart Energy, Bluetooth (BT), and Bluetooth Low Energy (BLE) are amongst the most commonly used wireless standards for IoT systems. Each of these standards has tradeoffs concerning power consumption, range of communication, network formation, security, reliability, and ease of implementation. The most widely used standards for IoT are Bluetooth, BLE, and Zigbee. This paper discusses the vulnerabilities in the implementation of the PHY and link layers of BLE. The link …
Optimization And Longevity Of Functionalized Multi-Walled Carbon Nanotube-Enabled Membranes For Water Treatment, Madeleine Michael Isabella White
Optimization And Longevity Of Functionalized Multi-Walled Carbon Nanotube-Enabled Membranes For Water Treatment, Madeleine Michael Isabella White
Master's Theses
Water scarcity is a growing concern at the global scale. Large scale water reuse is growing both in necessity and popularity. Before water reuse can be performed efficiently on a large scale or be used for potable supply, even indirectly, contaminants of emerging concern (CECs) will need to be treated at the full scale. Advanced oxidation processes (AOPs) are a form of advanced water treatment capable of treating a wide range of CECs. This study contributes to the growing field of AOPs and more specifically AOPs using ozone combined with functionalized multi-walled carbon nanotubes (MWCNTs). Ozonation of MWCNTs has been …
A Study Of The Standard Cirrus Wing Lift Distribution Versus Bell Shaped Lift Distribution, William H. Bergman
A Study Of The Standard Cirrus Wing Lift Distribution Versus Bell Shaped Lift Distribution, William H. Bergman
Master's Theses
This thesis discusses a comparison of the differences in aerodynamic performance of wings designed with elliptical and bell-shaped lift distributions. The method uses a Standard Cirrus sailplane wing with a lift distribution associated with the induced drag benefits of an elliptical distribution (span efficiency = 0.96) as the basis of comparison. The Standard Cirrus is a standard class sailplane with 15-meter wingspan that was designed by Schempp-Hirth in 1969. This sailplane wing was modeled and analyzed in XFLR5, then validated against existing wind tunnel airfoil data, and Standard Cirrus flight test data. The root bending moment of the baseline wing …
Attractiveness Of English Thyme (Thymus Vulgaris L.) To Arthropod Natural Enemies And Its Suitability As A Dual Use Resource, Kristina K. Van Wert
Attractiveness Of English Thyme (Thymus Vulgaris L.) To Arthropod Natural Enemies And Its Suitability As A Dual Use Resource, Kristina K. Van Wert
Master's Theses
Current agroecosystem management practices have a negative effect on natural enemies and their ability to control insect pests. Conservation biological control through the addition of flowering resources can manage food resources for natural enemies. These floral resources can also provide multiple ecosystem services. Study goals were to determine if perennial Thymus vulgaris L. was attractive to natural enemies and if so, could it be a dual use resource encouraging pest management and providing harvestable product. In 2018 plots in three locations were used to examine the effect of habitat throughout the growing season on the attractiveness of T. vulgaris. …
Estimating Evapotranspiration Of A Riparian Forest Using Sap Flow Measurements, James R. Solum
Estimating Evapotranspiration Of A Riparian Forest Using Sap Flow Measurements, James R. Solum
Master's Theses
To close the water use budget of irrigated agricultural fields in floodplains with substantial riparian corridors, it is necessary to understand groundwater usage by dominant phreatophytic vegetation, particularly when the primary source of water for irrigation comes from groundwater abstraction. We report here results of estimated evapotranspiration (ET) of a riparian forest, which were based on measurements of sap flow in phreatophytic vegetation within a riparian corridor. The riparian corridor was within a study area 75 to 140 meters wide in the lower portion of the Scotts Creek watershed, which is bounded to the west by the Pacific Ocean in …
Design Of Prototype Prosthesis For A Canine With A Right Front Limb Deformity As An Alternate Approach To Stabilize Gait And Withstand Gait Forces, Tayler R. Kastlunger
Design Of Prototype Prosthesis For A Canine With A Right Front Limb Deformity As An Alternate Approach To Stabilize Gait And Withstand Gait Forces, Tayler R. Kastlunger
Master's Theses
Congenital and developmental limb deformities in canines are rare and can occur as a genetic disorder or be caused by extrinsic factors. Without surgery to correct the deformity, conservative management can be implemented to manage exercise and restrict high-intensity activity of the canine. However, any alteration to the normal gait and locomotive biomechanics of a canine can have significant long-term effects on the musculoskeletal health and quality of life of the canine. To improve quality of life and provide an alternative and more cost-effective approach to surgery, a custom prosthetic was designed and developed for a canine born with a …
Investigation Of New Forward Osmosis Draw Agents And Prioritization Of Recent Developments Of Draw Agents Using Multi-Criteria Decision Analysis, Jodie Wei Yu
Master's Theses
Forward osmosis (FO) is an emerging technology for water treatment due to their ability to draw freshwater using an osmotic pressure gradient across a semi-permeable membrane. However, the lack of draw agents that could both produce reasonable flux and be separated from the draw solution at a low cost stand in the way of widespread implementation. This study had two objectives: evaluate the performance of three materials — peptone, carboxymethyl cellulose (CMC), and magnetite nanoparticles (Fe3O4 NPs) — as potential draw agents, and to use multi-criteria decision matrices to systematically prioritize known draw agents from literature for …
Bootstrapping Massively Multiplayer Online Role Playing Games, Mitchell Miller
Bootstrapping Massively Multiplayer Online Role Playing Games, Mitchell Miller
Master's Theses
Massively Multiplayer Online Role Playing Games (MMORPGs) are a prominent genre in today's video game industry with the most popular MMORPGs generating billions of dollars in revenue and attracting millions of players. As they have grown, they have become a major target for both technological research and sociological research. In such research, it is nearly impossible to reach the same player scale from any self-made technology or sociological experiments. This greatly limits the amount of control and topics that can be explored. In an effort to make up a lacking or non-existent player-base for custom-made MMORPG research scenarios A.I. agents, …
The Yanks Are Striking: Kern County, The 1921 Oil Strike And The Discourse On Americanism, Peter F. Hussey
The Yanks Are Striking: Kern County, The 1921 Oil Strike And The Discourse On Americanism, Peter F. Hussey
Master's Theses
In the fall of 1921 oil workers of the San Joaquin Valley faced a post-war economic slump, wage cuts across the board and an increasingly hostile attitude of oil operators towards consultation with the federal government on labor relations. They voted to strike, and the next day eight thousand workers walked off the fields. Strikers crafted an image of “patriotic unionism,” underpinned by a faith in the federal government and the ideology of the American Legion. The strike did not end in gruesome class warfare like had been seen months earlier in the coal mines of West Virginia, but rather …
The Effects Of A Baseball Season On Various Body Composition Measurements And Assessment Of Dietary Intake In Ncaa Di Baseball Players, Jordan Marthens
The Effects Of A Baseball Season On Various Body Composition Measurements And Assessment Of Dietary Intake In Ncaa Di Baseball Players, Jordan Marthens
Master's Theses
Despite the known importance of body composition in relation to performance and health of athletes, this study appears to be the first, or one of very few, to evaluate body composition measures from the beginning to end of season for NCAA DI collegiate baseball players and assess their dietary intake. Baseball players from the 2015-2019 seasons were included in the study (n=78; age=19.8±1.28). DXA scans performed at the start and end of season were analyzed and 3-day food records analyzed via ESHA software were utilized to assess dietary intake. Groups were stratified to examine differences in players’ positions (Pitchers vs. …
The Effect Of Orientation On The Ignition Of Solids, David Morrisset
The Effect Of Orientation On The Ignition Of Solids, David Morrisset
Master's Theses
The ignition of a solid is an inherently complex phenomenon influenced by heat and mass transport mechanisms that are, even to this day, not understood in entirety. In order to use ignition data in meaningful engineering application, significant simplifications have been made to the theory of ignition. The most common way to classify ignition is the use of material specific parameters such as such as ignition temperature (Tig) and the critical heat flux for ignition (CHF). These parameters are determined through standardized testing of solid materials – however, the results of these tests are generally used in applications …
Fighting For Equality In The Workforce, Madison Taylor Dewing
Fighting For Equality In The Workforce, Madison Taylor Dewing
Communication Studies
Inequality, discrimination, and sexual harassment has been occurring ever since individuals stepped into the workforce. All individuals are affected by these issues but in this paper, I mainly focus on women. I discuss the psychological effects these issues have on individuals, and then introduce my method and concepts. Throughout this paper, I use feminist criticism to take a closer look as to how women are portrayed in the two films, Bombshell, and 9 to 5, which are decades apart, and see how women have been treated in the workforce versus men. I then use identification to discover how these films …
Preconstruction Plan For A Pedestrian Pathway Rehabilitation Project, Sean R. Stratton
Preconstruction Plan For A Pedestrian Pathway Rehabilitation Project, Sean R. Stratton
Construction Management
The Americans with Disabilities Act (ADA) was passed to enforce improvements of public commodities to fill the gaps in our nation's civil rights inequalities for people with disabilities. Public pedestrian pathways are required by federal and state law to comply with ADA guidelines to allow ease of access to individuals with disabilities. Many existing sidewalks and pedestrian pathways have been renovated and modernized to comply with these ADA guidelines. This paper outlines the preconstruction plan for a rehabilitation project of a problematic pedestrian pathway on the campus of California Polytechnic State University, San Luis Obispo, and highlights the need for …
San Luis Obispo Botanical Garden Children’S Garden Shed, Javier Santiago
San Luis Obispo Botanical Garden Children’S Garden Shed, Javier Santiago
Construction Management
The San Luis Obispo Botanical Garden (SLOBG) is located on the California’s Central Coast. The garden consists of a total of 150 acres within El Chorro Regional National Park. This project arose because of a shortage of storage within the Botanical Garden grounds. This project specifically aimed to improve the children’s garden section’s storage space. Before the project took place, there was no storage space located within the children’s garden. Preconstruction coordination started in the Fall of 2019. Shortly after, design of the storage space began. Before construction of the storage shed could start, the project site was graded to …
Rodeo Arena Observation Deck, Ryan B. Fiorio
Rodeo Arena Observation Deck, Ryan B. Fiorio
Construction Management
This report details the process that brought about a large deck that was built at the Cal Poly Rodeo Arena by two students, Timothy Smith and Ryan Fiorio. The project itself was over a year in the making, starting from an idea of Ben Londo, the Cal Poly rodeo coach, to a lengthy approval process and lots of time to fundraise the required money. The project was completed in June of 2020. This project used TimberTech composite decking per the request of Ben Londo. It was also built extremely rigid with the use of pony walls instead of posts to …
Muscle Impulse Transducer, Nico Poirier, Martica Oreglia, Leila Assal
Muscle Impulse Transducer, Nico Poirier, Martica Oreglia, Leila Assal
Biomedical Engineering
No abstract provided.
Septal Closure Device, Olivia N. Welch, Hillal H. Jarrar, Kai Harrison
Septal Closure Device, Olivia N. Welch, Hillal H. Jarrar, Kai Harrison
Biomedical Engineering
The septal closure device was designed to seal defects in the atrial septum. To fully seal an atrial defect, the device was designed to consist of two circular seals to cover the defect in both the right and left atria, attached with a central rod. The materials were chosen for compressibility (for ease of insertion), biocompatibility, and tissue ingrowth. A CAD model was drafted in SolidWorks. Key customer requirements include ease of implantation (specifications: adjustable sizing and clear directions for use), physician controlled (specifications: short implantation time and compatibility with current catheter/scope techniques), and a long lifetime (specifications: materials that …
Academic Senate - Meeting Minutes, 5/26/2020, Academic Senate
Academic Senate - Meeting Minutes, 5/26/2020, Academic Senate
Academic Senate Minutes
No abstract provided.
Evaluating Second-Order Effects In Rigid Wall-Flexible Roof Diaphragm Buildings, John W. Lawson, Maria Koliou
Evaluating Second-Order Effects In Rigid Wall-Flexible Roof Diaphragm Buildings, John W. Lawson, Maria Koliou
Architectural Engineering
When evaluating seismically induced second-order effects in buildings, engineers and researchers are most familiar with these concerns in the context of multistory buildings with rigid diaphragms. However, similar concerns are valid for short single-story concrete or masonry-walled buildings with larger flexible diaphragms, which is a significant portion of the building stock in the United States. These rigid wall-flexible diaphragm (RWFD) buildings may have significant diaphragm drifts causing induced second-order effects. The stability coefficient currently found in ASCE 7 has traditionally been used by practitioners to evaluate the relative risk of P-delta instability in multistory buildings, but this indicator can be …
As-897-20 Resolution Of Commendation For Dustin Stegner, Academic Senate Executive Committee
As-897-20 Resolution Of Commendation For Dustin Stegner, Academic Senate Executive Committee
Academic Senate Resolutions
That the members of Cal Poly’s Academic Senate commend and thank Dustin Stegner for his tireless efforts as chair; and be it further RESOLVED that we wish him well in his future endeavors.
Academic Senate - Agenda, 5/26/2020, Academic Senate
Academic Senate - Agenda, 5/26/2020, Academic Senate
Academic Senate Agendas
No abstract provided.
Academic Senate - Meeting Minutes, 5/19/2020, Academic Senate
Academic Senate - Meeting Minutes, 5/19/2020, Academic Senate
Academic Senate Minutes
No abstract provided.
Academic Senate - Agenda, 5/19/2020, Academic Senate
Academic Senate - Agenda, 5/19/2020, Academic Senate
Academic Senate Agendas
No abstract provided.
As-902-20 Resolution On Suspending Credit / No Credit Grading Restrictions For Fall Quarter 2020 In Response To Covid-19, Academic Senate Executive Committee
As-902-20 Resolution On Suspending Credit / No Credit Grading Restrictions For Fall Quarter 2020 In Response To Covid-19, Academic Senate Executive Committee
Academic Senate Resolutions
that any courses taken in Fall Quarter 2020 not be counted toward the 16-unit limit as specified in “Resolution on Credit / No Credit Grading” (AS 479-97), and be it further RESOLVED that the 4-unit Credit/No Credit limit for General Education courses be suspended for Fall Quarter 2020, and be it further RESOLVED that any changes to the 4-unit Credit/No Credit limit regarding major, minor, or support courses for Fall Quarter 2020 shall continue to be determined by the individual academic programs, and be it further resolved that after the 8th day of Fall Quarter 2020, Cal Poly give students …
Executive Committee - Agenda, 5/12/2020, Academic Senate
Executive Committee - Agenda, 5/12/2020, Academic Senate
Academic Senate Agendas
No abstract provided.
Executive Committee - Meeting Minutes, 5/12/2020, Academic Senate Executive Committee
Executive Committee - Meeting Minutes, 5/12/2020, Academic Senate Executive Committee
Academic Senate Minutes
No abstract provided.