Digital Commons Network^™

Insulated Solar Electric Cooker With Phase Change Thermal Storage Medium, Justin Brett Unger, Nathan Robert Christler, Matthew Weeman, Marcus Edward Strutz

Mechanical Engineering

This final design review document outlines the senior design project carried out by a team of four mechanical engineering students at the California Polytechnic State University – San Luis Obispo under the sponsorship of Dr. Peter Schwartz of the Cal Poly Physics department. The aim of this project was to improve upon the design of previously developed Insulated Solar Electric Cookers (ISECs) by adding a thermal storage system to allow for quicker cook times and the ability to cook food at non-peak solar hours. The team’s goal was to develop a working prototype utilizing a phase change medium as the …

Framed Human Powered Vehicle Frame, Keyanna Brielle Henderson, Brendon Howard Morey, Kyra Noelle Schmidt, Austin Patrick Henry

Mechanical Engineering

The following is the Final Design Review (FDR) Report for Framed, a team tasked with designing and fabricating the frame of the 2018-2019 Cal Poly Human Powered Vehicle (HPV) Club bike. The bike is to be raced at the 2019 World Human Powered Speed Challenge in Battle Mountain, Nevada with the goal of breaking the American collegiate speed record. The purpose of the FDR Report is to introduce the project’s background and objectives, discuss the final design, and present the results of manufacturing and testing. Prior to beginning work on the design of the frame, the group conducted extensive research …

Vaccine Cooler For The Global Poor, Benjamin J. Larson, Cooper E. Gibson, Eilbron Younan, Cody R. Volk

Mechanical Engineering

Cal Poly physics professors Peter Schwartz and Nathan Heston approached the Solar Freeze team with the problem that remote communities in Africa have limited access to modern-day medicine or vaccines. They suggested that we try and design a cooling device that can keep vaccines cold for multiple days at a time while the medicine is transported to remote villages. Currently, there are vaccine cooler products on the market, but most of them are very expensive or lack portability. Peter and Nate have tasked the Solar Freeze team to come up with a less expensive solution that is also portable and …

Dynamic Shifting Of Virtual Network Topologies For Network Attack Prevention, Lenoy Avidan

Master's Theses

Computer networks were not designed with security in mind, making research into the subject of network security vital. Virtual Networks are similar to computer networks, except the components of a Virtual Network are in software rather than hardware. With the constant threat of attacks on networks, security is always a big concern, and Virtual Networks are no different. Virtual Networks have many potential attack vectors similar to physical networks, making research into Virtual Network security of great importance. Virtual Networks, since they are composed of virtualized network components, have the ability to dynamically change topologies. In this paper, we explore …

Ac Direct Drive Led Lighting Using Low Cost Analog Components, Miles Head

Master's Theses

This project explores the rapidly expanding area of AC direct drive for LED lighting. AC LED driving does not use typical DC-DC converter-based driving but uses semiconductor switches and a linear regulator to activate a number of LEDs proportional to the input voltage at any given time. This allows bulky, expensive magnetics to be eliminated from the system. The goal of this project was to design a scaled-down physical AC LED direct drive system to validate the conclusions of methods for improving efficiency from a previous investigation that found minimizing voltage across the linear regulating MOSFET led to higher efficiency …

Usb-C Power Adapter For Dc House Project, Tyler G. Starr, Ezzeddeen Gazali

Electrical Engineering

Despite the importance of electricity and the impact it has on our daily lives, many people around the world still live without this essential utility today. According to the International Energy Agency (IEA), approximately 1.1 billion people in the world did not have access to electricity in 2017. The DC House Project at Cal Poly aims to provide electricity to people living in rural areas by directly utilizing DC energy generated from renewable or human powered sources without the need for DC-AC conversions. However, one significant issue is the lack of a standardized DC wall socket. Standards for AC wall …

Autonomous Vehicles Operating Collaboratively To Avoid Debris And Obstructions, Toan T. Le, Cole W. Oppenheim, James H. Gildart, Kyle M. Bybee

Mechanical Engineering

The purpose of this project is to demonstrate the safety and increased fuel efficiency of an automated collision avoidance system in collaborative vehicle platooning. This project was cosponsored by Daimler Trucks North America headquartered in Portland, Oregon, as well as Dr. Birdsong, and Dr. DeBruhl of Cal Poly. The mechanical engineering team consists of Cole Oppenheim, James Gildart, Toan Le, and Kyle Bybee who worked in coordination with a team of computer engineers. Vehicle platooning is a driving technique to increase the fuel efficiency of a group of vehicles by following a lead vehicle closely to reduce the drag experienced …

Adjustable Seating Systems, Grace Timken, Zachary Dworaczyk, Jasper Lewin, Eric Voss

Mechanical Engineering

The Adjustable Seating Systems team designed and prototyped a collapsible and nestable seat for use in transit vehicles to create more free space for more passengers and cargo. Our team is the second senior project group to have worked at solving this problem. The previous team established a unique seat folding method that is currently pending patent approval. Our team’s responsibility was to improve the ease of use and overall hardware design of the entire seating system. This document captures the efforts that our team has performed to organize an approach to completing a full design and working prototype this …

Danny’S Recumbent Bike Accessibility Device Final Design Report, Joseph J. Lee, Huy Nguyen, Jack Mcatee, John Kulick

Mechanical Engineering

The purpose of this document is to fully define our design solution and explain our manufacturing and testing results. Our project’s goal is to find a way to allow Danny Knutson, a retired Navy pilot and incomplete quadriplegic with limited use of his arms and an impaired sense of balance, to enter and exit his recumbent tricycle without any discomfort for him or his aide. We completed multiple interviews with Danny, patent research, existing product research, and other technical literature research in order to fully understand the problem. We synthesized this information to create a concrete list of customer wants …

Solar-Powered Fountain, Byungyu Andy Kim, Jun Kim, Kota Ozawa, Joseph Ciolino

Mechanical Engineering

This Final Design Review (FDR) document outlines the senior design project started by four mechanical engineering students from California Polytechnic State University, San Luis Obispo for Dr. Gary Epstein, a retired Cal Poly mathematics professor and avid gardener. This project entails created a solar-powered fountain for his backyard that has two buckets, a top bucket that will pour into a bottom bucket and then finally into a basin. The goal is to create a fountain that includes the tipping motion of the buckets powered fully by photovoltaic panels. In order to tackle the bucket tipping motion, formulas were derived to …

High Strollers, Braeden Hammond, Morley Perrin, Reid Bartels, Juan Rodriguez

Mechanical Engineering

This report documents the final product of Jonathon’s new lightweight stroller. The Mechanical Engineering team from Cal Poly, High Strollers, began the project to create a lightweight stroller for the project sponsor, Nina Aguayo, and her son, Jonathon Aguayo, in Fall of 2018. Jonathon is diagnosed with Delayed Brain Development and Hypotonia with some characteristics of Cerebral Palsy. He has a 50lb high intensity stroller to go to and from school. Mrs. Aguayo needed a stroller that is easier to transport while still meeting all of Jonathon’s needs. The re-designed stroller will make leisurely outings for Mrs. Aguayo and Jonathon …

Go With The Flow, Scott Weinhardt, Priscilla Ng, Ben Rydberg, Ritika Makhijani

Mechanical Engineering

This Final Design Review (FDR) report outlines the Fuel System Flow Analysis senior project completed by the presenters listed. Included is research about Solar Turbines’ needs, and objectives for our project, our design decision process and final design, manufacturing, design verification report, final results, and suggestions moving forward with this experiment. The goal of the project is to identify stable pressure fields throughout the Solar Turbines fuel delivery system. Specifically, the optimal placement for taking measurements downstream of the main and pilot fuel control valves. The data is used to validate the accuracy of computational fluid dynamic (CFD) models that …

Comparative Thermal Ecology Of Coastal And Inland Pacific Rattlesnakes (Crotalus Oreganus), Hayley Layne Crowell

Master's Theses

Global biodiversity is declining as a direct result of anthropogenic climate change. Ectothermic species have become focal organisms for studying the ecological effects of altered climates due to the clear relationship between environmental temperatures and ectotherms’ basic physiological functions. Historically, examinations of these effects have focused heavily on heliothermic lizards, and most others have tended to focus on single populations or sympatric species within a single community. Addressing the longterm energetic implications of environmental temperature variation will provide valuable insight into the cascading physiological effects that certain populations or species may experience as a result of altered climates.

In this …

Universal Bike Suspension Design, Ernesto Huerta, Gregory Ryan Ritter, Chris Michael Fedor, Michael Wu

Mechanical Engineering

Cal Poly Bike Builders (CPBB) is a student club at Cal Poly helping students design and fabricate their own bicycles. Currently, club members build rigid frames and mountain bikes with only front-suspension–commonly referred to as a “hardtail”. As more students join the club, interest grows in building full-suspension mountain bikes (FSMTB). Designing and manufacturing a mountain bike rear-suspension system requires a diverse skillset and a substantial time commitment. As a result, individual efforts building FSMTB have proven unsuccessful. The scope of this project is to develop a defined method and necessary tools such that all CPBB members can efficiently build …

Graduate Internship Report - Highland High School, Meagan Dunlap

Agricultural Education: Graduate Internship Reports

This internship and project report includes documentation required in meeting the quality criteria for secondary-level programs of instruction in agriculture. The documents are concurrently used for the Agriculture Incentive Grant review process at Highland High School conducted by representatives of the California Department of Education. The supporting material includes information to receive state and local funding, outline the goals and objectives of the program, along with an overview of Highland High School, the agriculture program and the community.

Graduate Internship Report - Fowler High School, Victor Evans

Agricultural Education: Graduate Internship Reports

This internship/project report includes validation documents required in meeting the quality criteria for secondary-level programs of instruction in agriculture. The documents are concurrently used for the Agriculture Incentive Grant review process at Fowler High School conducted by representatives of the California Department of Education. The internship included the construction of a facility to house and care for fair livestock. Accompanying the project report are photos illustrating the construction steps and educational processes utilized to complete the project.

Left Atrial Model, Borna Sobati, Sarah Porello, Tess Pate

Biomedical Engineering

The objective is to produce an electrophysiological model of an adult human left atrium. This model will be used to test mapping probe catheters used for locating cardiac arrhythmias against current technology used in practice. Dr. Chris Porterfield requested this model and other physicians or probe catheter manufacturers may also use this product in the future. Dr. Porterfield also discussed the possibility of future senior project groups using the model as a bench test for designing new catheter tips. The model will precisely simulate electrical behaviors of the heart in normal as well as arrhythmic conditions. Ideally, the model will …

Final Design Report For Human Powered Vehicle Drivetrain Project, Derek Fromm, Luke Opitz, Michael Juri, Olivier Côté

Mechanical Engineering

The Cal Poly Human Powered Vehicle Club is building a bike to surpass 61.3 mph in 2019. The club and their mentor, George Leone, have proposed a senior project to design, build, and test the drivetrain for this year’s human powered vehicle. Research into human powered vehicles and their drivetrains has shown that the power that a rider can output and the efficiency at which the rider can pedal depend extensively on the design of the drivetrain. Despite the existence of standard bicycle drivetrain designs, the senior project team has found that the best design to meet the club’s requirements …

On-Demand Label Production, Robert A. Zimmerman

Master's Theses

The production and approval process for the various labels used in clinical trials wastes significant time and resources through the need to outsource label production or rely on large reams of pre-cut label stock for each revision throughout the process. An in-house, on-demand label printing and cutting system is a potential remedy to this waste. Previous work by Cheadle et al. resulted in a functional electomechanical prototype of the label cutting aspect of this research, capable of rudimentary linear cuts. In this continued research, emphasis was placed on improved label cutting capabilities and creating PC control software for label design. …

Effects Of Bio-Composites In Corrugated Sandwich Panels Under Edgewise Compression Loading, Jalen Christopher Mano

Master's Theses

Present day composite sandwich panels provide incredible strength. Their largest problem, however, is early bonding failure between the core and the skin. This is due to the low bonding surface area of present cores like honeycomb. Corrugated structures could provide a remedy for this with their much larger bonding surface area. Corrugated structures have extreme mechanical properties deeming them particularly useful in aerospace and automotive applications. However, previous research has shown that the stiffness of carbon fiber causes debonding and drastic failure when used as both a core and a skin. Bio-composites have properties that could strengthen the corrugated sandwich …

Tropicalization Of Canonical Curves, Adhitya Saran Mohan

Master's Theses

A fundamental result in the classification of nonsingular projective curves is the canonical embedding. Our goal is to investigate how this canonical embedding interacts with the process of tropicalization. We first give an overview of classical algebraic geometry, beginning with affine varieties. We highlight several important tools used for the construction of maps from algebraic varieties to projective space, namely divisors and differentials, extracting the main properties necessary for the canonical embedding. For illustration, we explicitly describe the image of a certain genus six curve under the canonical embedding. We then transition to tropical geometry, with a brief overview of …

Comparison Of Lqr And Lqr-Mrac For Linear Tractor-Trailer Model, Kevin Richard Gasik

Master's Theses

The United States trucking industry is immense. Employing over three million drivers and traveling to every city in the country. Semi-Trucks travel millions of miles each week and encompass roads that civilians travel on. These vehicles should be safe and allow efficient travel for all. Autonomous vehicles have been discussed in controls for many decades. Now fleets of autonomous vehicles are beginning their integration into society. The ability to create an autonomous system requires domain and system specific knowledge. Approaches to implement a fully autonomous vehicle have been developed using different techniques in control systems such as Kalman Filters, Neural …

Feature Identification In Time Series Data Sets, Justin Shaw, Marek Stastna, Aaron Coutino, Ryan K. Walter, Eduard Reinhardt

Physics

We present a computationally inexpensive, flexible feature identification method which uses a comparison of time series to identify a rank-ordered set of features in geophysically-sourced data sets. Many physical phenomena perturb multiple physical variables nearly simultaneously, and so features are identified as time periods in which there are local maxima of absolute deviation in all time series. Unlike other available methods, this method allows the analyst to tune the method using their knowledge of the physical context. The method is applied to a data set from a moored array of instruments deployed in the coastal environment of Monterey Bay, California, …

Academic Senate - Meeting Minutes, 4/30/2019, Academic Senate

Academic Senate Minutes

No abstract provided.

Academic Senate - Agenda, 4/30/2019, Academic Senate

Academic Senate Agendas

No abstract provided.

As-875-19 Resolution On The Campus Chick-Fil-A, Thomas Gutierrez

Academic Senate Resolutions

Chick-Fil-A and its Foundation have a history of donations to anti-LGBTQ organizations; and These donations represent direct evidence of a worldview highly inconsistent with our values of diversity and inclusivity at Cal Poly; and The presence of Chick-Fil-A on campus negatively impacts campus climate for many students, faculty, and staff; and therefore be it that the Academic Senate urges Cal Poly and Cal Poly Corporation to sever ties with Chick-Fil-A and terminate the contract with the on-campus franchise; and be it further Cal Poly and Cal Poly Corporation be mindful of the practices and donation patterns of its business partners …

Executive Committee - Agenda, 04/23/2019, Academic Senate

Academic Senate Agendas

No abstract provided.

As-877-19 Resolution On Graduate Blended Program Policies, Academic Senate Curriculum Committee

Academic Senate Resolutions

Students should have a clear and unambiguous path to receive their baccalaureate degree if they choose not to complete their master’s degree program; and AS-860-19 states that “All Cal Poly undergraduate students shall complete a senior project as part of their baccalaureate degree program requirements”, and that “As a bridge from college to career/postgraduate success, the senior project at Cal Poly is a capstone experience with achievable outcomes that culminates in a self-directed final production or product carried out under faculty direction”; and under Title V, a minimum of 225 total units are required (Bachelor’s 180 + Master’s 45) for …

Executive Committee - Meeting Minutes, 4/23/2019, Academic Senate

Academic Senate Minutes

No abstract provided.

Academic Senate - Meeting Minutes, 04/16/2019, Academic Senate

Academic Senate Minutes

No abstract provided.