Effects Of Initial Forging Temperature, Cooling Rates, And Carbon Content On Primary Alpha Formation In Ti-6al-4v, James Tillman, Hui Wei

Materials Engineering

Ti-6Al-4V is an alpha-beta titanium alloy system, which contains both alpha and beta phases at room temperature. Both alpha and beta phases provide Ti-6Al-4V a range of different properties for a range of applications. In order to improve the energy efficiency and better satisfy customers’ requirements of less than 52% primary alpha phase, Weber Metals sponsored this project to study the effects of carbon content, forging temperature, and cooling rates on primary alpha formation in Ti-6Al-4V alloys. There has been a lot of discussion as to whether or not carbon, a known alpha stabilizer, will affect the microstructure in small …

Improving Product Design By Predicting Flexural Strength Of A Honeycomb Core Sandwich Panel Composite Using Ply Tensile Strength, Justin Lui, Javal Patel

Materials Engineering

The use of composite sandwich panels has increased in the aerospace industry. Prediction of a theoretical composite construction's flexural properties is important for efficient composite product designs. Utilizing the four point flexure geometry defined by Zodiac Aerospace, Santa Maria, CA, a mechanical model was derived to predict the flexural behavior of a theoretical honeycomb core sandwich composite using laminate tensile properties. The most common failure mode of Zodiac Aerospace’s four point bend test is a failure in tension of the bottom laminate. Given this information, ASTM D3039 (Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials) was chosen …

Elevated Temperature Effects On The Mechanical Properties Of Age Hardened 6xxx Series Aluminum Alloy Extrusions, Rachael Donovan, Rose Fortune, Robert Trout

Materials Engineering

The purpose of this project is to determine if over-aging of aluminum causes the yield or tensile strength to fall below the minimum strength values set by the aluminum industry. Extruded aluminum alloys, 6061-T6, 6063-T6, and two proprietary alloys, HS6X-T6 and RX82-T6, were exposed to reheating treatments at extended times and temperatures. The three temperatures were 350°F, 390°F, and 425°F. The times of reheat increased logarithmically from 30 minutes to 64 hours. The samples were tensile tested to determine the tensile strength and yield strength. Statistical methods helped model the behavior of yield and tensile strength as a function of …

Measuring Performance Of Paint Coating Via Laboratory And Field Testing, Eugene Leung, Rocco Lattanzio

Materials Engineering

No abstract provided.

Fire Protection Analysis Cotchett Education Building, Building 002, Cal Poly San Luis Obispo, William J. Beasland

Fire Protection Engineering: Culminating Experience Project Reports

This report analyzes the Cotchett Education Building on the Cal Poly, San Luis Obispo College campus. Since this is an existing building, with various modifications made during the life of the building, it was analyzed as an existing building. NFPA 101, Life Safety Code, 2012 edition (LSC) contains requirements for existing buildings, and was the primary code used in this analysis. Other codes used in analysis were referenced in each section. The Cotchett Education Building meets most requirements of NFPA 101, Life Safety Code, 2012 edition. However, there are recommendations regarding exiting and the alarm system. See section 7 of …

Fire And Life Safety Report- Battalion Headquarters Complex (Ueph), Mathew Mershimer

Fire Protection Engineering: Culminating Experience Project Reports

This fire and life safety report covers a Battalion Headquarters Complex that is used for housing military troops. This is a complete review of the building with prescriptive based fire protection along with performance base review of the building. The prescriptive fire protection covers egress analysis of the space, passive fire protection (i.e. fire walls and doors) and active fire protection (i.e. fire alarm and fire sprinklers). The performance based section looks at the prescriptive requirements and sees if these would be enough for the application at hand. The building fire protection and life safety are covered by three different …

Comprehensive Fire Protection And Life Safety Evaluation Of The Robotic Manufacturing Science And Engineering Laboratories (Rmsel) Facility, Tomas M. Sanchez

Fire Protection Engineering: Culminating Experience Project Reports

A comprehensive fire protection and life safety evaluation has been performed for the Robotic Manufacturing Science and Engineering Laboratory (RMSEL) at Sandia National Laboratories (SNL). The evaluation considered both prescriptive and performance based aspects. Current codes, such as the 2012 International Building Code and the 2013 version of NFPA 13 – Standard for the Installation of Sprinkler Systems, are generally the basis for the prescriptive evaluation even though they are not the code of record for the building. Use of current codes for this evaluation is mostly for academic reasons. Nevertheless, the facility is generally compliant with the provisions of …

Comprehensive Fire And Life Safety Analysis Of Building 186, Construction Innovation Center, At California Polytechnic State University, San Luis Obispo, Chris Torres

Fire Protection Engineering: Culminating Experience Project Reports

The report summarizes the analysis of the existing fire protection features and systems installed in the Construction Innovation Center at California Polytechnic State University, San Luis Obispo. The center is divided into three individual buildings (Buildings A, B and C) and are connected at each floor by an exterior balcony. The analysis includes two different approaches. A prescriptive analysis approach has been used to examine if the installed fire protection features and systems compliance with the latest edition of the codes and standards in California. This approach includes an evaluation of the fire structure protection, means of egress, fire alarm …

Measurement And Analysis Of Physical And Climatic Distribution Environment For Air Package Shipment, Sher Paul Singh, Jay Singh, Koushik Saha

Industrial Technology and Packaging

There has been a significant growth in the air package shipment business, which involves the multi-modal movement of a package in transportation and material handling systems that encompass conveyors, carts, trucks, delivery vans and aircrafts of various sizes and shapes. This study was aimed at establishing the ‘air package shipment’ conditions experienced by packages transported by air under ‘normal conditions of transport’. Air package shipment data (temperature, humidity, pressure, shock and vibration) were collected for several domestic and international routes through instrumented packages. The collected data were supplemented by previous research to measure and quantify this multi-modal shipping environment. This …

Cal Poly Dining: The Avenue Redesign, Eric Calbonero, Derek Nollsch, Casey Reilly

Industrial and Manufacturing Engineering

Executive Summary

Campus Dining is planning to close VG’s Cafe during the 2015-2016 school year; as a result, the remaining restaurants on campus need to accommodate the additional student demand. The student team consisting of Eric Calbonero, Derek Nollsch, and Casey Reilly met with Campus Dining’s Director of Operations, Greg Yeo, about this issue—he directed the team toward a redesign of The Avenue Food Court. To redesign The Avenue, the project team focused on several key deliverables as follows:

• Study current customer trends in The Avenue

• Develop a proposed facilities layout and design

• Perform a capacity analysis of The Avenue …

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San Luis Obispo Children's Museum: The Circuit Lab, Megan Garcia, Victoria Higgins, Michael Xie

Industrial and Manufacturing Engineering

Executive Summary

Over a nine month period, the senior project team worked closely with the San Luis Obispo Children’s Museum to develop a new interactive exhibit for the museum’s Science, Technology, Engineering, and Mathematics (STEM) floor. The initial budget given for this project was $3,000. The museum’s requirements for a new exhibit were that it must be safe for young children to use, require minimal supervision, is interactive, has learning objectives, and is economically feasible and sustainable. The team chose to build an exhibit that would teach young children about simple circuitry and electronics.

First, extensive research of circuits, children’s …

Visualizing Population Density Based On Wifi Router Location And Network Usage, Tyler Deitz

Liberal Arts and Engineering Studies

This research paper introduces a prototype of a feature for Robert E. Kennedy’s maps web application. The feature visualizes population density based off wifi router location and network usage within the building. The significance of the feature is noted by documenting the library’s transition into a hub for student life and campus culture, which increases the space’s occupancy and visitor retention for a longer time. The feature is based off a Voronoi diagram map distribution which strongly affects its technical and visual implementation. The end product is user tested by Cal Poly students and received a 93.5% satisfaction rate.

Discovering Factors Affecting Student Retention In Computer Science At Cal Poly, Diane Eykholt

Liberal Arts and Engineering Studies

No abstract provided.

Synthesis Of Co-Electrospun Lead Selenide Nanostructures Within Anatase Titania Nanotubes For Advanced Photovoltaics, Evan K. Wujcik, Stephanie R. Aceto, David R. Heskett, Arijit Bose

Chemical, Biomolecular, and Materials Engineering Faculty Publications

Inorganic nano-scale heterostructures have many advantages over hybrid organic-inorganic dye-sensitized solar cells (DSSC or Grätzel cells), including their resistance to photo-bleaching, thermal stability, large specific surface areas, and general robustness. This study presents a first-of-its-kind low-cost all-inorganic lead selenide-anatase titania (PbSe/TiO₂) nanotube heterostructure material for photovoltaic applications. Herein, PbSe nanostructures have been co-electrospun within a hollow TiO2 nanotube with high connectivity for highly efficient charge carrier flow and electron-hole pair separation. This material has been characterized by transmission electron microscopy (TEM), electron diffraction, energy dispersive X-ray spectroscopy (EDX) to show the morphology and material composition of the synthesized …

Assessing The Repercussions Of A Mass Departure Of Building Inspectors From The Code Professional Industry In Utah, George Reese Williams

Theses and Dissertations

National studies suggest that eighty percent of existing code professionals are expected to retire within the next fifteen years. As part of this research, it was determined that approximately half of all licensed building inspectors in the State of Utah will reach retirement age within the next ten years. As building inspectors make up a large part of the Code Professional Industry this demographic was selected as the focus of this research. The purpose of this research project was to assess the urgent need for new entrants into the Code Professional Industry in Utah. As part of this research, trends …

Using The Offset Panel Technique To Develop Innovative Origami-Based Applications, Michael Robert Morgan

Theses and Dissertations

Origami, the art of folding paper, was once only an art form. In recent years, it has collided with the world of engineering and is acting as a source of inspiration for solutions to various engineering problems. Paper, the typical material used in the art form, is thin and works well for origami, but is not often suitable for use in engineering. Researchers have developed a handful of methods for accommodating thick/rigid materials in origami design. Most of these preserve only the kinematics of the model or its range of motion. Not only does the offset panel technique (OPT) preserve …

Tethys Platform: A Development And Hosting Platform For Water Resources Web Apps, Nathan R. Swain

Theses and Dissertations

The interactive nature of web applications or “web apps” makes it an excellent medium for conveying complex scientific concepts to lay audiences and creating decision support tools that harness cutting edge modeling techniques. However, the technical expertise required to develop them represents a barrier for would-be developers. The barrier can be characterized by the following hurdles that developers must overcome: (1) identify, select, and install software that meet the spatial and computational capabilities commonly required for water resources modeling; (2) orchestrate the use of multiple FOSS and FOSS4G projects and navigate their differing application programming interfaces (APIs); (3) learn the …

How Professional Society Membership Is Affected By Returning Student Status, Anne M. Lucietto, Diane L. Peters

School of Engineering Technology Faculty Publications

In recent years, several research efforts have aimed to understand the issues surrounding engineering professionals returning to the academic environment for graduate degrees in engineering. This research focuses on a variety of issues: why they return, what they hope to do afterwards, and what their experiences are in the academic environment. While those are important issues, interaction with professional societies while in the workplace and pursuing graduate work are also of concern. Many engineering professionals, both in industry and in academia, value activities with these organizations while advancing in membership levels as they advance through their careers. Advancement may be …

Me-Em Enewsbrief, June 2015, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University

Department of Mechanical and Aerospace Engineering eNewsBrief

No abstract provided.

Effects Of Pipe Wall Offsets On Differential Pressure Meter Accuracy, Jesse M. Pope, Steven L. Barfuss, Michael C. Johnson, Zachary B. Sharp

Civil and Environmental Engineering Faculty Publications

Accurate flow measurement is essential for the management of any type of fluid system. This research investigated the effect on accuracy that five types of 12-in. differential-pressure flow meters have as a result of being installed in pipelines of differing inside diameter. The types of meters chosen for this research were the classical Venturi meter, Halmi Venturi Tube, wedge meter, V-cone meter, and the X-meter. Each meter was tested for accuracy with 10 pipe wall offsets varying from a 0.125-in. sudden contraction to a 0.937-in. sudden expansion of the pipe radius. The meters' reading during each test series was compared …

Design Of Synthetic Jet Actuator For Flight Control Of Small Uav, Priyanka Pagadala

Doctoral Dissertations and Master's Theses

The main idea of this project is to develop a prototype SJA - Synthetic Jet Actuator to embed into a small UAV with modified Glauert wing cross-section for Active Flow Control. Apart from lift enhancement, drag reduction, or separation control, etc; LCO suppression might be possible by modifying the boundary layer through the use of these actuators. For initial investigation, a wing section with span of 12.4 cm and chord of 14 cm was fabricated and tests were conducted in the subsonic wind tunnel at the free stream velocities of 5 and 10 m / s. From these experiments, lift …

Sensor Fusion And Obstacle Avoidance For An Unmanned Ground Vehicle, Gurasis Singh

Doctoral Dissertations and Master's Theses

In recent years, the capabilities and potential value of unmanned autonomous systems (UAS) to perform an extensive variety of missions have significantly increased. It is well comprehended that there are various challenges associated with the realization of autonomous operations in complex urban environments. These difficulties include the requirement for precision guidance and control in conceivably GPS-denied conditions as well as the need to sense and avoid stationary and moving obstructions within the scene. The small size of some of these vehicles restricts the size, weight and power consumption of the sensor payload and onboard computational processing that can accommodated by …

Evaluating A Collaborative Ipad Game's Impact On Social Relationships For Children With Autism Spectrum Disorder, Louanne E. Boyd, Kathryn E. Ringland, Oliver L. Haimson, Helen Fernandez, Maria Bistarkey, Gillian R. Hayes

Engineering Faculty Articles and Research

This article describes how collaborative assistive technologies, housed on off-the-shelf, low-cost platforms such as the iPad, can be used to facilitate social relationships in children with autism spectrum disorder (ASD). Through an empirical study of the use of a collaborative iPad game, Zody, we explore how assistive technologies can be used to support social relationships, even without intervention from adults. We discuss how specific design choices can encourage three levels of social relationship: membership, partnership, and friendship. This work contributes to research on both assistive technologies and collaborative gaming through a framework that describes how specific in-game elements can foster …

Alumnus Shares His Passion For Technology Accessibility

DePaul Magazine

Brent Shiver (CDM MS ’04, PhD ’13) attended the College of Computing and Digital Media and worked with another deaf student, Karen Alkoby (CDM MS ’99, PhD ’08), on the DePaul ASL Project, which combines computer technology and linguistics research to bridge the communication gap between the deaf and hearing worlds by working to develop a digital English-to-ASL translator. He works for IBM Accessibility as a software engineer.

Capillary Channel Flow (Ccf) Eu2-02 On The International Space Station (Iss): An Experimental Investigation Of Passive Bubble Separations In An Open Capillary Channel, Mark M. Weislogel, Andrew P. Wollman, Ryan M. Jenson, John T. Geile, John F. Tucker, Brentley M. Wiles, Andy L. Trattner, Claire Devoe, Lauren M. Sharp, Peter J. Canfield, Jörg Klatte, Michael E. Dreyer

Mechanical and Materials Engineering Faculty Publications and Presentations

It would be signicantly easier to design fluid systems for spacecraft if the fluid phases behaved similarly to those on earth. In this research an open 15:8 degree wedge-sectioned channel is employed to separate bubbles from a two-phase flow in a microgravity environment. The bubbles appear to rise in the channel and coalesce with the free surface in much the same way as would bubbles in a terrestrial environment, only the combined effects of surface tension, wetting, and conduit geometry replace the role of buoyancy. The host liquid is drawn along the channel by a pump and noncondensible gas bubbles …

Using Systematic Literature Reviews To Enhance Student Learning, Branimir Pejcinovic

Electrical and Computer Engineering Faculty Publications and Presentations

Literature review is a skill assumed to be in the arsenal of all graduate students pursuing thesis options at the MS or PhD level. There are many resources on writing literature reviews, from campus writing centers to books such as Machi and McEvoy. One would also assume that this is among the very first tasks that research-oriented students would undertake. However, our brief and preliminary survey of graduate students in our electrical and computer engineering department showed that they have very little to no experience in performing literature reviews, and discussions with other faculty confirmed this observation. Unlike some other …

Antics: A Cross-Platform Mobile Game, Gerren D. Willis

Electronic Theses, Projects, and Dissertations

Recent technologies have made it increasingly easier for independent developers to build and deploy gaming applications for mobile devices. The focus of this master's project is to investigate one such set of technologies, which include Adobe AIR, Starling and Feathers, that allow games to be written in ActionScript and run on both Android and iOS devices. For this purpose, I chose to use these technologies to design and implement the game ANTics proposed by Whim Independent Studios, a start up game studio in San Bernardino. ANTics is written in ActionScript and runs on Adobe AIR. It can be deployed on …

Aerodynamic Design And Structural Analysis Procedure For Small Horizontal-Axis Wind Turbine Rotor Blade, Dylan R. Perry

Master's Theses

This project accomplished two correlated goals of designing a new rotor blade to be used with the Cal Poly Wind Power Research Center, as well as defining the methodology required for the aerodynamic analysis of an optimized blade, the procedure required for generation of an accurate CAD model for the new blade geometry, and structural integrity verification procedure for the new blade via finite element analysis under several operating scenarios. The new rotor blades were designed to perform at peak efficiency at a much lower wind speed than the current CPWPRC rotor blades and incorporated a FEA verification process which …

Ecg Classification With An Adaptive Neuro-Fuzzy Inference System, Brad Thomas Funsten

Master's Theses

Heart signals allow for a comprehensive analysis of the heart. Electrocardiography (ECG or EKG) uses electrodes to measure the electrical activity of the heart. Extracting ECG signals is a non-invasive process that opens the door to new possibilities for the application of advanced signal processing and data analysis techniques in the diagnosis of heart diseases. With the help of today’s large database of ECG signals, a computationally intelligent system can learn and take the place of a cardiologist. Detection of various abnormalities in the patient’s heart to identify various heart diseases can be made through an Adaptive Neuro-Fuzzy Inference System …

Design And Fabrication Techniques Of Devices For Embedded Power Active Contact Lens, Errol Heradio Leon

Master's Theses

This thesis designed and fabricated various devices that were interfaced to an IC for an active contact lens that notifies the user of an event by detection of an external wireless signal. The contact lens consisted of an embedded antenna providing communication with a 2.4GHz system, as well as inductive charging at an operating frequency of 13.56 MHz. The lens utilized a CBC005 5µAh thin film battery by Cymbet and a manufactured graphene super capacitor as a power source. The custom integrated circuit (IC) was designed using the On Semiconductor CMOS C5 0.6 µm process to manage …