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Articles 1 - 30 of 427
Full-Text Articles in Engineering
Testing Virtual Machines For Cadrc Server Hosting, Robin Verweij
Testing Virtual Machines For Cadrc Server Hosting, Robin Verweij
Computer Science and Software Engineering
No abstract provided.
Design And Construction Of A Portable Gantry Hoist, Sam Hutcheson
Design And Construction Of A Portable Gantry Hoist, Sam Hutcheson
BioResource and Agricultural Engineering
This report covers the design of a portable gantry hoist with a custom frame design. The design was based off of the materials that were available and practical for this project to save money. The portable gantry hoist will be rated for a 2 ton capacity. The casters, trolley, and hoist were the only parts purchased.
Thermodynamic Efficiency Evaluation For Distillation Of Ethanol, Joe A. Cavaletto
Thermodynamic Efficiency Evaluation For Distillation Of Ethanol, Joe A. Cavaletto
BioResource and Agricultural Engineering
Energy will always be a consideration when distilling any product. Fog’s End Distillery in Gonzales, CA is a small scale micro distillery for ethanol. For Fog’s End, efficiency is key to staying competitive. In this project the efficiency of energy in vs product out will be calculated. While collecting this data the price/bottle for energy will be determined and used for an assembly cost. To determine the efficiency the fuel usage will be recorded for several distillation trials. The mash contents and product contents will all be measured and calculations will be performed to find the theoretical amount of energy …
Exploring Human-Computer Interaction Through Bluetooth Low Energy Enabled Human Interface Devices, Tyler Durkin
Exploring Human-Computer Interaction Through Bluetooth Low Energy Enabled Human Interface Devices, Tyler Durkin
Liberal Arts and Engineering Studies
No abstract provided.
The Effects Of Football Helmet Pressure On The Shock Taken During A Controlled Impact, Sullivan Grosz
The Effects Of Football Helmet Pressure On The Shock Taken During A Controlled Impact, Sullivan Grosz
Industrial Technology and Packaging
College and NFL football teams are focusing their efforts on protecting players more than ever before. With the recent attention on concussions and the troubling long-term effects of head injuries, more research is needed to find ways to ensure players have the adequate protection. The helmets being used have a hard polycarbonate shell with four inner pads that fit tight to the player’s head. These pads are filled with air.
The purpose of the testing and project is to find an ideal air pressure that helmets need to maintain in order to protect the player to the best of its …
Tascked: The Sanity Promoting Task Manager, Jake Tobin
Tascked: The Sanity Promoting Task Manager, Jake Tobin
Computer Science and Software Engineering
Personal task managers or various forms of to-do lists are abundant in our modern computing age. With the explosion of mobile computing technology, it is easier than ever to take notes digitally and make the data seemingly instantly available anywhere on the Internet. There is a fairly well defined core set of features in personal task managers available for public consumption, but it seems nothing that is publicly available provides feedback to the user or suggestions based on user history. Tascked is a task management solution, which records user history and solicits user feedback on progress. This allows the system …
Numerical Flow Field Analysis Of An Air Augmented Rocket Using The Axisymmetric Method Of Characteristics, Jeffrey Massman
Numerical Flow Field Analysis Of An Air Augmented Rocket Using The Axisymmetric Method Of Characteristics, Jeffrey Massman
Master's Theses
An Axisymmetric Rocket Ejector Simulation (ARES) was developed to numerically analyze various configurations of an air augmented rocket. Primary and secondary flow field visualizations are presented and performance predictions are tabulated. A parametric study on ejector geometry is obtained following a validation of the flow fields and performance values.
The primary flow is calculated using a quasi-2D, irrotational Method of Characteristics and the secondary flow is found using isentropic relations. Primary calculations begin at the throat and extend through the nozzle to the location of the first Mach Disk. Combustion properties are tabulated before analysis to allow for propellant property …
Constant Voltage Hot-Wire Anemometry For The Boundary Layer Data System, Hon Yee Li
Constant Voltage Hot-Wire Anemometry For The Boundary Layer Data System, Hon Yee Li
Master's Theses
To continue the development of the Boundary Layer Data System (BLDS), a constant voltage hot-wire anemometer (CVA) is implemented into the BLDS for flight-testing. The hot-wire anemometer was chosen as an alternative to the traditional pressure probe because of the ability to measure both average velocity and fluctuating velocity within the boundary layer. Previous work done on the benchtop has led to the design of miniaturization, flight-capable hardware for the BLDS. The next step in the development of the BLDS – CVA calls for quantifying the accuracy of the boundary layer measurements measured by the CVA system. To do this, …
Enhancing Gan Led Efficiency Through Nano-Gratings And Standing Wave Analysis, Gabriel M. Halpin
Enhancing Gan Led Efficiency Through Nano-Gratings And Standing Wave Analysis, Gabriel M. Halpin
Master's Theses
Improving energy efficient lighting is a necessary step in reducing energy consumption.Lighting currently consumes 17% of all U.S. residential and commercial electricity, but a report from the U.S. Office of Energy Efficiency and Renewable Energy projects that switching to LED lighting over the next 20 years will save 46% of electricity used in lighting.GaN LEDs are used for their efficient conversion of electricity to light, but improving GaN efficiency requires optically engineering the chip to extract more light.Total internal reflection limits GaN LED performance since light must approach the chip surface within 23.6° of normal to escape into air.This thesis …
Design Of A Low Power Cargo Security Device Using A Micropower Ultra-Wideband Impulse Radar, Brian M. Wihl
Design Of A Low Power Cargo Security Device Using A Micropower Ultra-Wideband Impulse Radar, Brian M. Wihl
Master's Theses
Each year, thousands of cargo containers are broken into during shipping, costing billions of dollars in lost and damaged goods. In addition to removing its contents, intruders can also add unwanted and dangerous materials to a container, posing a threat to National Security. The possibilities of cargo container break-ins require that the containers go through check points at which they are physically searched. These searches often require the opening of the container, unloading and inspecting all cargo, and then loading the container and resealing it. This is a long and costly process.
Because of the high costs of break-ins and …
Parsing Of Natural Language Requirements, Jamie L. Patterson
Parsing Of Natural Language Requirements, Jamie L. Patterson
Master's Theses
The purpose of this thesis was to automate verification of the software requirements for an implantable cardioverter defibrillator with minimal manual rework. The requirements were written in plain English with only loose stylistic constraints. While full automation proved infeasible, many significant advances were made towards solving the problem, including a framework for storing requirements, a program which translates most of the natural language requirements into the framework, and a novel approach to parts of speech analysis.
Equipment Maintenance And Replacement Decision Making Processes, Michael W. Gage
Equipment Maintenance And Replacement Decision Making Processes, Michael W. Gage
Industrial and Manufacturing Engineering
This project contains recommendations for the decision making processes for support and production equipment maintenance and replacement for a large defense contractor. Recent literature has been reviewed to provide perspective on current trends in the field. A complete evaluation of their current processes and systems is included with recommendations on areas for improvement. A decision support system is also proposed to supplement their existing decision making.
S1nn Gmbh & Co. Kg (Automobile Connectivity Module 1.1), Tyler Alexander Ball
S1nn Gmbh & Co. Kg (Automobile Connectivity Module 1.1), Tyler Alexander Ball
Industrial and Manufacturing Engineering
The results of this report show how when diagnostics were run on the Connectivity Module 1.1, the problems discovered such as potential short-circuiting, 90-degree copper tracing angles, and components overheating/tombstoning were addressed. By using the method of “DMAIC,” which stands for Design, Measure, Analyze, Implement, Control, successful corrections were made. In the first design of the Printed Circuit Board (PCB), 1454 critical issues were found. With the newly designed PCB’s modifications being implemented, only 12 critical issues remained, which were later addressed and corrected. The results from this report are a functional Automobile Connectivity Module 1.1.
Project Management Of High School Shadow And Building An Engineer Day, Andrea M. Carroll
Project Management Of High School Shadow And Building An Engineer Day, Andrea M. Carroll
Industrial and Manufacturing Engineering
Building an Engineer Day and High School Shadow are semi-annual outreach events hosted by Cal Poly’s Society of Women Engineers section during fall and spring quarters. The events focus on encouraging women and minorities to take an interest in engineering. These events are the two largest outreach events hosted by The Society of Women Engineers and need to run smoothly in order to provide student attendees with a meaningful experience.
Building an Engineer Day and High School Shadow are currently un-organized and un-planned, which leads to problems with officer retention, increase in expediting process and a low attendance rate at …
Fixture For Carbon Fiber Spar Of Human Powered Helicopter, David John Ikeda, Luis Gonzalez
Fixture For Carbon Fiber Spar Of Human Powered Helicopter, David John Ikeda, Luis Gonzalez
Industrial and Manufacturing Engineering
The following report describes our contribution to Cal Poly Human Powered Helicopter for the 2012 competition for the Sikorsky Prize offered by the American Helicopter Society. In order to win this prize the team needs to build and fly a human powered helicopter for more than 60 seconds reaching and altitude of 3 meters while staying in a 10 meter square box. Our team was created to support the integration of Carbon Fiber parts, specifically the carbon fiber spars with rotor and landing gears. Precise cutting and accurate drilling was needed and our team was tasked with creating a fixture …
Mode I Fracture Toughness Of Eight-Harness-Satin Carbon Cloth Weaves For Co-Cured And Post-Bonded Laminates, Josh E. Smith
Mode I Fracture Toughness Of Eight-Harness-Satin Carbon Cloth Weaves For Co-Cured And Post-Bonded Laminates, Josh E. Smith
Master's Theses
Mode I interlaminar fracture of 3k 8-Harness-Satin Carbon cloth, with identical fill and weft yarns, pre-impregnated with Newport 307 resin was investigated through the DCB test (ASTM D5528). Crack propagations along both the fill and weft yarns were considered for both post-bonded (co-bonded) and co-cured laminates. A patent-pending delamination insertion method was compared to the standard Teflon film option to assess its applicability to mode I fracture testing. The Modified Beam Theory, Compliance Calibration method, and Modified Compliance Calibration method were used for comparative purposes for these investigations and to evaluate the validity of the proposed Equivalent Stiffness (EQS) method. …
Investigation Of Compressed Air Energy Storage Efficiency, James W. Keeney
Investigation Of Compressed Air Energy Storage Efficiency, James W. Keeney
Master's Theses
This study investigates Compressed Air Energy Storage (CAES) application in the
electrical power and transportation industries. Information concerning current CAES projects is
presented. A thorough thermodynamic analysis of the CAES process is completed; including
theoretical efficiency determination for several variants of the compression and expansion
processes. Industry claimed efficiencies ranging from 26% to 82% are presented and explained.
Isothermal and Isentropic efficiency baselines are developed. Energy density of compressed air
on both a mass and volume basis is compared to other energy storage methods. Best expected
efficiency of a hypothetical CAES system is determined to be 34% using currently achievable …
The Collapsible Trailer: Design And Manufacture, Robert Hobson
The Collapsible Trailer: Design And Manufacture, Robert Hobson
Biomedical Engineering
No abstract provided.
Laminar Flow Hood System Design, Sophie Schneider
Laminar Flow Hood System Design, Sophie Schneider
Electrical Engineering
In 2011 health care costs for transplants were over 12 billion dollars in the United States for evaluation, procurement, facilities use, physicians, and post-transplant check-ups. In 2012 burns hospitalized 40,000 people and over 17,000 people received organ transplants. Sadly, the number of organ donors greatly lags the number of people on the transplant waiting list and the gap has widened over the decades. While preventative health care is extremely important, researching tissue engineering (TE) to treat patients in fatal condition provides alternatives for replacing or repairing a variety of damaged tissue. These alternative treatments can considerably reduce the supply-demand gap …
Motor Protection Lab Experiment Using Sel-710, Ozro Corulli
Motor Protection Lab Experiment Using Sel-710, Ozro Corulli
Electrical Engineering
Advancements in microprocessor based relay technology for power protection applications provide quicker response times and new methods of mitigation. This project develops a lab experiment for Cal Poly class EE444 - Power Systems Laboratory based on the Schweitzer SEL-710 motor protection relay. Learning objectives for this lab include relay setup, programming, and protection schemes for the following conditions: undervoltage, loss of phase, fault, locked rotor, and thermal overload. Today, utility companies across the globe use SEL relays for primary system protection, putting engineers familiar with their operation in high demand.
Microcontroller Design: Control Electronics For Rantec's 28vdc Input 3-U Power Supply, Leo Hernandez
Microcontroller Design: Control Electronics For Rantec's 28vdc Input 3-U Power Supply, Leo Hernandez
Electrical Engineering
The Control Electronics is a real-time data acquisition and control system based on Atmel’s AVR microcontroller. The Control Electronics will be embedded into Rantec’s 3U power supply to monitor and report power supply data [1]. The power supply data monitored includes power supply output voltages, input voltage, DC bus voltage, and temperature.
The microcontroller continuously monitors DC voltages through seven I2C compatible analog-to-digital converters via a custom Two-Wire interface. An analog temperature sensor measures power supply data and feeds it as an analog voltage to the microcontroller’s built-in analog to digital interface. The microcontroller stores the acquired power …
Subway Rail Car Filter Sampling Tool, Brian Hong, Julia Pollard, Philip Ybarra
Subway Rail Car Filter Sampling Tool, Brian Hong, Julia Pollard, Philip Ybarra
Mechanical Engineering
The following design report has been prepared by Team Slice for both Cal Poly’s Mechanical Engineering Department and Lawrence Livermore National Laboratory. This report provides an overview of the design ideation process of creating a subway rail car filter sampling tool. This cutting tool will take samples of HVAC filters from subway railcars in New York City, NY. These samples will then be used for processing in biological terror emergency response situations. This device will provide an easy, safe, and user friendly tool to cut filter samples. The current method of cutting is a pair of scissors or shears, which …
In-Bottle Wine Aerator, Kevin Kesler, Patrick Lowry, Paul Woolworth
In-Bottle Wine Aerator, Kevin Kesler, Patrick Lowry, Paul Woolworth
Mechanical Engineering
The proposal for Capitol Cultivators discusses and evaluates the development of an in-bottle wine aerator. It defines the problem and need for an aerator located inside the wine bottle. Additionally, it outlines requirements essential for an effective design and describes the engineering process that will be followed.
Trampoline And Bungee Fatigue-Test Machine, Andy Brock, Christopher D'Elia, Ryan Murphy
Trampoline And Bungee Fatigue-Test Machine, Andy Brock, Christopher D'Elia, Ryan Murphy
Mechanical Engineering
JumpSport, a Saratoga based recreational and fitness trampoline company, sponsored this senior project team towards the development of a fatigue-testing machine. The goal of this project was to iterate the previous machine JumpSport used for bungee cord, spring, and trampoline fatigue testing. Since minimal study had been conducted on these specific bungee cords, the fixture was designed to confirm the theoretical correlations for rubber and perform the final tests according to a strict protocol. Operating with a specific test protocol in mind will allow the data from multiple tests to be combined and analyzed statistically. With a design concept in …
Design Of An Automatic Wood Trimming Machine, Van Ho, Nicholas Maskal, Andrew Rutland
Design Of An Automatic Wood Trimming Machine, Van Ho, Nicholas Maskal, Andrew Rutland
Mechanical Engineering
This final design report, prepared for Sunrise Arts by the Cal Poly design team Mahogany Automation, details the year-long process in which the team of three engineering students designed and built an automated wooden -plank edge trimming machine that incorporates anti-jamming and continuous loading features. The team has examined current woodworking machines and features available on the industrial and commercial market, and used these as guides along with device requirements set by the project sponsor, Bruce Palmer. The focus has been on designing the simplest and most cost effective device that allows operators to make production runs of wooden slats …
Heat Transfer Experiment: Energy Conservation, Ben Ward, Brett Wallace, Ryan Waltman
Heat Transfer Experiment: Energy Conservation, Ben Ward, Brett Wallace, Ryan Waltman
Mechanical Engineering
This proposal, prepared for the Mechanical Engineering Department by the HTEC design team will redesign and replace the current energy conversion lab that is inaccurate and out of date. The team will evaluate methods of energy conversion, specifically using braking systems, as well as existing labs in order to design an accurate and relatable experiment for this lab. The project team will work with Professor Kim Shollenberger in order to design an experiment that demonstrates energy conversion through the first law of thermodynamics while utilizing a common device that is practical in student’s lives. The final result of this project …
Peripheral Artery Catheter Tracking System, Chris Blecher, Michael Lashore, Nhan Le
Peripheral Artery Catheter Tracking System, Chris Blecher, Michael Lashore, Nhan Le
Mechanical Engineering
No abstract provided.
Rifle And Shotgun Recoil Test System, Benjamin Canfield-Hershkowitz, Trevor Foster, William Meijer
Rifle And Shotgun Recoil Test System, Benjamin Canfield-Hershkowitz, Trevor Foster, William Meijer
Mechanical Engineering
No abstract provided.
Sodhana Environmental - Final Design Report, Eric Taylor, Corissa Bellis, Cody Perez, Cameron Zeller
Sodhana Environmental - Final Design Report, Eric Taylor, Corissa Bellis, Cody Perez, Cameron Zeller
Mechanical Engineering
A fully designed cost-effective, sustainable, toilet for the developing world.
Design Of A Sustainable Toilet, Meghan Pranger, Tommy Lauderdale, Joseph Benyon, Kyle Moore
Design Of A Sustainable Toilet, Meghan Pranger, Tommy Lauderdale, Joseph Benyon, Kyle Moore
Mechanical Engineering
No abstract provided.