Digital Commons Network^™

Metamaterial-Based Soft Actuators, Savannah June Cheney, Nathan Kessenich, Marco Leen, Merek Mcgill

Mechanical Engineering

For this project the team was tasked with designing a soft actuator that incorporated aspects of mechanical metamaterials. The team’s goal was to demonstrate the feasibility of structural metamaterials in the field of soft robotics and demonstrate a novel response with a final assembly. Also included in the team's discussion are the manufacturing steps, protype tests & results, and suggested future next steps. Following the previous report (critical design review) the team chose to follow the path of designing a continuum robot with metamaterials incorporated into the design. A continuum robot consists of a soft cylindrical body with rigid evenly …

Zero-Waste Ocean Floor Hydrophone Mooring, Chloe Schofield, German Jack Ellsworth, Jathun Somasundaram, Evan Brown

Mechanical Engineering

Maddie Schroth-Glanz, from the Statistics Department of Cal Poly, requires a system that assists in the deployment and retrieval of a marine hydrophone used to record ocean mammal vocalization patterns, specifically in large whales. This report discusses the final design, including changes to the design after the Critical Design Review, and the tests that were done to ensure the final design achieves the specifications of the project. We will discuss everything from material purchases to manufacturing and assembly for all subsystems of the project, and then discuss how our testing justified the design choices we made. Finally, the report will …

Bespoke Bicycle Enclosure, Thomas Link, Kyle Mcafee, Marc Monier, Hunter Walden

Mechanical Engineering

Brian Higgins is an American veteran with retinitis pigmentosa who relies on cycling for transportation. The motivation for this project is to design and manufacture a refined prototype bicycle attachment to support him while biking in the rain and cold. The attachment will serve to enclose him for optimal protection from inclement weather, while maintaining sufficient mobility for daily cycling. Mr. Higgins’ bicycle is equipped with an attached sensor system which assists his visual impairment by using an ultrasonic sensor. Therefore, the attachment cannot adversely affect the function of the sensor system. The project timeline is set at approximately 7 …

Home Based Business Ordinance For The City Of Reno, Maxwell Hp Johnson

City and Regional Planning

Home based businesses allow for some commercial and business activities to occur within private residences by residents without the need of commercially zoned properties or structures. Home based businesses provide affordable accommodation for less impactful small businesses, but can additionally impact neighbors and communities with negative externalities when not properly regulated. The City of Reno, Nevada currently faces rising land prices and limited availability of commercial properties. Such conditions increase the adoption of home based businesses, and combined with the lack of regulation can create nuisances within communities.

The ordinance proposal analyzes relevant legal cases, case study ordinances, and the …

Frontier - A Bus Rapid Transit System In Frisco, Tx, Matthias Berry

City and Regional Planning

This study explores the increasing inaccessibility produced by reliance and catered infrastructure to mass ownership of personal vehicles. Accessing employment, service, and activity destinations has become extremely difficult for those who cannot possess, afford, or operate personal vehicles; even cyclists have a more difficult time navigating roads due to limited infrastructure and accommodations. Public transit has often become an afterthought within cities, with local routes competing with other cars on the road and adding to overall traffic volume. Bus-Rapid Transit (BRT) systems are an expanding concept within car-centric regions, often being called the "subways, but on wheels", that not only …

French Drain Project At Woods Humane Society, Thomas Douglas Collins

Construction Management

The Woods Humane Society is a prominent animal care facility that aims to rehabilitate, rescue, and assist in the adoption of dogs and cats in the greater San Luis Obispo area. The property contains multiple dog playpen areas which consist of a concrete slab surrounded by a chain link fence, designed for the animals to have an open space to run around throughout the day. Employees are required to hose down the slab hourly to maintain a clean environment for the animals. When employees hose down the playpen areas, a considerable amount of water runs off the slab and into …

Experimental Characterization And Computer Vision-Assisted Detection Of Pitting Corrosion On Stainless Steel Structural Members, Riley J. Muehler

Master's Theses

Pitting corrosion is a prevalent form of corrosive damage that can weaken, damage, and initiate failure in corrosion-resistant metallic materials. For instance, 304 stainless steel is commonly utilized in various structures (e.g., miter gates, heat exchangers, and storage tanks), but is prone to failure through pitting corrosion and stress corrosion cracking under mechanical loading, regardless of its high corrosion resistance. In this study, to better understand the pitting corrosion damage development, controlled corrosion experiments were conducted to generate pits on 304 stainless steel specimens with and without mechanical loading. The pit development over time was characterized using a high-resolution laser …

The Effect Of Adding Mango To A Breakfast Meal On Glycemic And Satiety Responses And Next Meal Energy Consumption, Natalie R. Ramos

Master's Theses

Spikes in blood glucose (BG) result in adverse health consequences in people with and without diabetes. This study aimed to compare the BG and satiety responses of adding mango or sugar to a high glycemic load (HGL) breakfast. A randomized, controlled trial (cross-over design) was conducted with 18 participants. Participants consumed cornflakes and almond milk (Control), control plus 34gm added sugar (ASug), or added mango (AMango) with 34gm carbohydrate. BG was determined at fasting, 15, 30, 60, 90, 120min postprandial; satiety was rated with a visual analog scale at each time point. At 120min, subjects consumed a snack of hummus …

Graduate Internship Report - Cal Poly Bull Test, Kayla Marie Dubowsky

Agricultural Education: Graduate Internship Reports

The Cal Poly Bull Test has a long-standing history on the university campus. The program has continued to grow and improve since it was founded in 1956 and with these improvements to the program, the marketing and curriculum need to adapt as well. For this internship, I worked in partnership with Dr. McFarlane on three main projects focusing on rebranding, curriculum development, and the creation of marketing materials. The rebranding consisted of the creation of a new logo and an updated brand guide. The curriculum development consisted of the creation of a marketing module for the enterprise-class that focuses on …

Mbesese Build 2023, Ben Stewart, Matthew Chung, Ian Mcconnell

Architectural Engineering

In collaboration with the Mbesese Initiative for Sustainable Developments, the senior project group from California Polytechnic State University of San Luis Obispo, researched, designed, and created construction documents for the Same Polytechnic College project in the town of Same, Tanzania. This project aims to combat poverty in the Kilimanjaro Region of Tanzania by providing education and infrastructure development. In 2023, the senior project group focused on completing a communal and educational space and addressing clean water scarcity through a rainwater collection system on the site of the future college.

Arce 415 Portfolio: The Green Bird Of Paradise, Kristofer R. Rickansrud, Ryan Chan, Brendan Peers, Joel Santoyo

Architectural Engineering

A design project creating a Polyshell sunshade structure for the Leaning Pine Arboretum.

The Development Of Sexual Health Educational Canvas Modules For Cal Poly Students, Alexa J. Asson, Dillan Chiewpanich, Amanda Hodges, Tanya Patil

Biological Sciences

Purpose: Sexual health education continues to be a taboo topic underrepresented in young adult health education. Many high school students do not receive the sexual health education they need. One study found that 34% of girls and 42% of boys left high school without education on birth control methods (Wong et al., 2019). Furthermore, students entering college have varying, often inadequate, levels of sexual health knowledge. After examining sexual health data at California Polytechnic State University (Cal Poly), the Cal Poly Sexual and Reproductive Health (SRH) Lab found that students engage in risky sexual behaviors. For example, nearly one quarter …

The Integration Between Housing And Transportation In Contemporary City And Regional Planning: Transit-Oriented Development For The San Luis Obispo Station, Aidan Zachary Clark, Keigo Justin Yamamoto, Owen Deane Troy

City and Regional Planning

This transit-oriented development will help mitigate the housing crisis in California starting with San Luis Obispo at the local level by developing housing for all demographics. The project will be beneficial towards increasing the livability and connectivity of current residents, commuters, and visitors of the San Luis Obispo region. The project will also activate the spaces by providing a walkway and commercial development for people that were previously not present. The proposed development is projected to activate the area, with new amenities, while promoting the site’s existing uses; The existing cafe and restaurant within the project site will not be …

Advising Communication In Finance, Jordan J. Schumann

Communication Studies

Communication is an important factor in relationships. When it comes to financial advising and the advisors’ relationship with their clients, it is no different. However, the driving factor of what makes a client choose one advisor over another remains in question. As such a question builds: what does an advisor do to maintain a client and promote gaining new ones? This study examines the experiences current advisors have had in their respective careers. To examine this topic, communication theories (Social Cognitive Theory, Source Credibility Theory, and Uncertainty Reduction Theory) are called upon to inform the outcomes of advisors' experiences. The …

Three Rivers: Plan Analysis And Recommendations Including An Environmental Justice Addendum, Gerardo Arregui

City and Regional Planning

This document examines the existing Three Rivers Community Plan in order to find shortcomings, missing information and to recommend appropriate format and content for future iterations. The final section of this document has been designed to be a model for the Environmental Justice section for the Three River’s future community plan update because the current plan is silent on this topic.

Bike Share: A Discussion And Case Study Analysis Including Recommendations For Cal Poly And The City Of San Luis Obispo, Gabrielle N. Delavallade

City and Regional Planning

Since 2015, micromobility has swiftly expanded to new cities across the United States. Micromobility is defined as a category of transportation services that are shared-use, lightweight, and personal use such as electric scooters (escooters), shared bicycles, and electric bicycles (e-bikes). Micromobility vehicles can be person powered, electrically powered, or a combination of the two (CRCOG, 2022; BTS, 2022). One form of micromobility that is gaining popularity is known as bicycle share. In 2020, the North American Bikeshare and Scootershare Association (NABSA) 2020 State of the Industry Report found that an estimated 83.4 million trips were taken in North America alone …

The Development Of Sexual Health Educational Canvas Modules For Cal Poly Students, Alexa Jordan Asson, Dillan Isabella Chiewpanich, Amanda Hodges, Tanya Patil

Kinesiology and Public Health

Purpose: Sexual health education continues to be a taboo topic underrepresented in young adult health education. Many high school students do not receive the sexual health education they need. One study found that 34% of girls and 42% of boys left high school without education on birth control methods (Wong et al., 2019). Furthermore, students entering college have varying, often inadequate, levels of sexual health knowledge. After examining sexual health data at California Polytechnic State University (Cal Poly), the Cal Poly Sexual and Reproductive Health (SRH) Lab found that students engage in risky sexual behaviors. For example, nearly one quarter …

Filters For Fiji: A Modified Cracker Box Biosand Filter For Rural Fiji, Geneva Newell, Cameron Lowrey, Thomas Burt, Lexie Caterine

Civil and Environmental Engineering

Water quality remains a major issue throughout rural Fiji, as current solutions rely on outside organizations providing money or technology. The goal of Filters for Fiji’s research was to develop a sustainable water filtration method for the people of rural Fiji, through ethnographic and biological research. In order to be sustainable, the filter had to be inexpensive (less than USD$15), simply built and maintained, and suitable for the end-user. The driving question of the research was: can a plastic, modified biosand filter be constructed from materials that could be sourced locally in rural Fijian communities? To answer this question, feedback …

Effect Of Environmental And Ultraviolet Degradation On The Albedo Of Polyethylene Sheet Materials For Improved Energy Harvesting By Bifacial Photovoltaic Power Plants, William A. Jang, Roxy H. Jackson-Gain

Materials Engineering

Solar energy farms typically utilize monofacial photovoltaic (mPV) cells in their arrays to capture direct sunlight to produce renewable energy. However, the efficiency of these farms can be increased by 2 – 6% through the implementation of bifacial photovoltaic cells (bPV). These bPV cells function by capturing incident ultraviolet (UV) light energy that is reflected off the surface to increase its overall energy production. The amount of UV energy that is reflected is dependent on the albedo value of surface, which is a measure of energy reflectance. In this study, samples of unreinforced polyethylene (PE), scrim-reinforced polyethylene (SR-PE), and woven …

Benefits Of Having A Disability Cultural Center At Cal Poly, Chau Nguyen

Political Science

All colleges and universities in the United States are legally required to accommodate their students with disabilities. However, many schools do not support their disabled student body in ways that go beyond what they are legally required to provide under the Americans with Disabilities Act (ADA) and Section 504 of the Rehabilitation Act. Though every university and college in the United States has a dedicated ADA compliance office, students with disabilities still express that their holistic needs are unmet and that they feel unsupported by their schools. Establishing Disability Cultural Programs and Centers is one method that colleges and universities …

Design, Modeling, And Testing Of A Novel Inductor For Electric Vehicles: Iron Nitride Soft Magnetic Composites, Sydney F. Fultz-Waters, Jacob Krynock

Materials Engineering

New technology for electric vehicles (EVs) must meet the requirements of higher energy usage, lower costs, and more sustainable source materials. One promising material for EV power system components is iron nitride (IN) soft magnetic composites (SMCs) because of their competitive magnetic properties and high abundance of the source materials. As part of an ongoing program at Sandia National Laboratories, this project focused on using computer modeling to optimize the prototyping process for an iron nitride SMC toroidal inductor to reach a target inductance of 600 μH. Four inductors with different combinations of wiring (26 AWG and 20 AWG) and …

Pcra-Icra Pre-Construction Risk Assessment/Infection Control Risk Assessment Course, Devin Alan Deiranieh

Construction Management

The Preconstruction Risk Assessment and Infection Control Risk Assessment (PCRA/ICRA) course is a collaboration between Cal Poly San Luis Obispo’s Construction Management Department, Cal Poly’s California Center for Construction Education, Green Advantage, LLC and Thomas Kommer, J.D. The goal is to create a certification course in which industry professionals become certified, signifying their knowledge and understanding of PCRA/ICRA practices associated with construction in the environment of patient care. The project began with the PCRA/ICRA manual authored by Stellar Performance, LLC. Working with Nicholas Schorno, the author developed the learning material for the course. The learning material consists of power point …

The Torii Project: Installation Manual, Jorge Armando Lara-Gonzalez

Construction Management

Serving as a symbolic gateway that establishes the entrance to a sacred space, is known as a Torii. The Torii is a traditional Japanese gate that holds great significance in Japanese culture. Our team is inspired to create a respectable and culturally appropriate Japanese torii in hopes of honoring the Japanese, Japanese-American community within the campus and the central coast. This Torii is meant to serve as a token of diversity, equity and inclusion in the Cal Poly community. The scope of manual for the Torii project explores what it takes for the installation process of the Torii after manufacturing …

Attainable And Sustainable Home Building Solutions, Katrina Matthews

Construction Management

Sustainability has fortunately been a recent concern in the construction industry as climate change continues to impose potentially insurmountable threats to the global environment. Although many new methods have been adopted in efforts to lessen the adverse environmental effects of construction-related activities, as a society, we still have much room for growth as the built environment accounts for almost 50% of global emissions. Many changes and standards must be adopted to make these solutions efficiently beneficial. To set industry standards, we must start with the most basic form of construction- residential building. This report covers two attainable framing solutions for …

The Impact Of Employee Position And Company Size On Workplace Stress In The Commercial Construction Industry, Jena Lee

Construction Management

While stress is commonly experienced in the construction field, there is a lack of understanding regarding how employee rank and company size contribute to this phenomenon. This paper investigates the impact of employee rank and company size on stress levels in the construction industry. To address the gap of information, a qualitative survey was conducted among employees of a small commercial company, focusing on stress levels according to employee ranking. This would be part one. The findings shed light on the relationship between employee position and stress. Additionally, an indirect comparative analysis was performed, comparing the results of this study …

City Farm Slo Educational Pizza Oven, Koby J. Ramage

Construction Management

City Farm SLO is a nonprofit that educates the public about growing food, and they donate the produce to food banks and communities in need. Their mission is to promote healthy living through sustainable agriculture and farm-based education. This senior project is to build them an educational pizza oven for them to use in their classes. With it they will give lessons where they cook pizzas using ingredients that they grow on site. To do this, the builder had to make it lightweight and able to move around the property to different meeting places and outdoor classrooms. It is also …

Creating A Demolition Estimate Lab Assignment, Alex Domine

Construction Management

This senior project aims to create a Demolition Estimate Lab as part of Cal Poly, San Luis Obispo's Demolition Topics Course, with the goal of enhancing construction education through practical experience in estimating demolition costs. The Lab will be equipped with industry-standard tools and software to simulate diverse demolition scenarios, covering site preparation, equipment requirements, waste disposal, labor needs, and environmental considerations. The project methodology entails extensive research and the integration of interactive learning activities. This initiative is expected to yield several benefits for students. Firstly, it will lead to improved learning outcomes by providing hands-on experience in estimating demolition …

Redesigning The Structure And Sanitary Aspects Of The Portable Toilet, Anna Knutson

Construction Management

The purpose of this project was to address the lack of appropriate facilities for women in the construction industry, specifically regarding portable toilets and how they can pose health and safety risks. To do so, a hackathon event was organized with the goal of brainstorming solutions to improve the current design and functionality of portable toilets. This paper provides an overview of what a hackathon is and why it was chosen for this project, and the planning involved. The event took place in the Simpson Strong-Tie Materials Demonstration Lab on California Polytechnic State University’s campus on June 8th and 9th, …

City Farm Of Slo Animal Feed Shed, Jacob Ryan Pizzifred

Construction Management

The City Farm of SLO is a local nonprofit for San Luis Obispo that functions as an education center for individuals looking to live more sustainably. This organization teaches different aspects of farming such as planting crops, taking care of them, how to care for a wide variety of farm animals, and maintain the health of the farm. To achieve all these objectives, facilities must be in place to ensure the correct number of materials are available. One lacking feature of this farm is the space to store animal feed. Before this project the food was stored outside subject to …

The Role Of Nonprofit Housing Developers In Addressing The Affordable Housing Crisis: A Case Study Of Linc Housing, Joshua Broadhead

Construction Management

Nonprofit housing developers are playing a critical role in addressing the affordable housing crisis in society. However, they face significant challenges in the current housing landscape. To explore this topic, this project takes a case study approach, using Linc Housing as the primary case study to examine the impact of nonprofit housing developers on the affordable housing crisis and the challenges they face. The project involves a literature review to identify the impact nonprofits can have, key issues, and challenges faced by nonprofit housing developers in the current housing landscape. Additionally, data is collected on Linc Housing's affordable housing development …