Digital Commons Network^™

Dcpp/Polygait Inventory Control System, Logan Pace, Robert Garlinghouse

Industrial and Manufacturing Engineering

This report discusses a proposed system to improve upon inventory management issues experienced in the M&TE Tool room for the PG&E Diablo Canyon Power plant. Effective inventory tracking and management is an important characteristic of any organization handling physical assets, and without the proper system in place, companies may lose expensive items and waste time by not having equipment available when needed. The tool room is experiencing inventory shrinkage of M&TE equipment nearing $100,000 per year largely because of an inefficient checkout system that fails to keep employees accountable for the tools they check out. Even more costly than the …

Quality Improvement At Patio Pacific, Petdoors, Tri Minh Nguyen, In Woo Suh

Industrial and Manufacturing Engineering

Quality is key in manufacturing any type of product. Customer expectations only rise with time, and it has become more crucial than ever for companies to produce quality products to survive. This project sets out to improve quality of flagship products at Patio Pacific. This report contains the background of the company, Patio Pacific, the process of finding critical problems, and the methodology to solve them.

Customer returns and inquiries have the ability to eat up cash flow in any type of company. This senior project sets out with introduction of the project that explains how the project came about, …

Introduction Next Contents Vol 63(4) Global Research On Ultramafic (Serpentine) Ecosystems (8th International Conference On Serpentine Ecology In Sabah, Malaysia), Antony Van Der Ent, Nishanta Rajakaruna, Robert Boyd, Guillaume Echevarria, Rimi Repin, Dick Williams

Biological Sciences

Since 1991, researchers from approximately 45 nations have participated in eight International Conferences on Serpentine Ecology (ICSE). The ICSE conferences are coordinated by the International Serpentine Ecology Society (ISES), a formal research society whose members study geological, pedological, biological and applied aspects of ultramafic ecosystems worldwide. These conferences have provided an international forum to discuss and synthesise multidisciplinary research, and have provided opportunities for scientists in distinct fields and from different regions of the world to conduct collaborative and interdisciplinary research. The 8th ICSE was hosted by Sabah Parks in Malaysia, on the island of Borneo, and attracted the largest …

Analysis Of Shear Strength Variance Of Ph 15-7 Mo Blind Rivet Stems For Aerospace Applications, Miles Macarthur, Kent C. Majewski

Materials Engineering

This project attempts to reduce manufacturing costs incurred to Cherry Aerospace by variance in material properties. To track and predict the shear strength of PH 15-7 Mo stainless steel rivet stems throughout the heat treatment process, samples were taken from several steps in the manufacturing process and experimental heat treatments were performed across a range of temperatures. The supplied rivet stems were heat treated for four hours at temperatures from 520°C to 560°C, in increments of 10°C. Double shear testing in accordance with ASTM 1312-13A revealed that there is no apparent correlation between the strength of the supplied wire and …

Effect Of Heat Treatment On The Mechanical Properties In Natural Bamboo, Austin Levy, Mackenzie Kirkpatrick

Materials Engineering

Previous studies have shown that heat treatments have the ability to improve mechanical strength and stiffness in hardwood species. Compared to structural hardwoods, bamboo is a more sustainable and globally viable renewable resource. Therefore, Bambusoides vivax (timber bamboo) culms were fabricated into flat, rectangular cross-section samples with varying cellulose content to be heat treated and tested for mechanical properties. All samples were heat treated (HT) twice. The first HT was a normalization of all samples at 103 +/- 3 °C. The second HT was performed at various times and temperatures ranging from 130°C to 170°C for 0.5 to 3 hours. …

Minimizing Sheet Resistance Of Organic Photovoltaic Cell Top Contact Electrode Layer: Silver Nanowire Concentration Vs. Conductive Polymer Doping Concentration, Caitlyn Cook

Materials Engineering

The top contact electrode layers of nine organic photovoltaic cells were prepared with two varying factors: three Silver nanowire (AgNW) densities deposited on a conductive polymer doped with three concentrations. Silver’s low sheet resistance of 20-Ω/sq is hypothesized to lower the sheet resistance of the anode layer and thus enhance the overall efficiency of the cell. Four-point probe measurements indicated that increasing AgNW density in the top contact electrode layer of an organic photovoltaic cell significantly reduces sheet resistance from 52.2k-Ω/sq to 18.0 Ω/sq. Although an increase in doping concentration of the conductive polymer reduced sheet resistance in low AgNW …

Printed Circuit Board For Introductory Animatronics Course, Preston Brown

Computer Engineering

For many years, freshmen Computer Engineering students at California Polytechnic State University have taken a course that introduces them to the “processes of electronics manufacturing. They are lectured on concepts such as CAD/CAM design, Design for Manufacture (DFM), documentation requirements, prototyping and production planning”. The laboratory portion of the course allows students to “use hands-on techniques to solidify knowledge of project planning, soldering, automation, hand tool usage and production methods” by manufacturing their own power supply, starting with aluminum sheets, a bag of components, and and an unassembled printed circuit board (PCB).

While the project is popular among students, department …

The Repatriation Of Mexican-Americans To America, Aaron Ziskin

History

Shortly following the onset of the Great Depression America undertook a policy coined as Mexican Repatriation wherein it began encouraging people of Mexican descent to return home in order to free up jobs for 'actual' American citizens. This Policy touched countless people as it was broadly applied to anyone of the Mexican race, however as American influence in World War II increased it began facing a worker shortage. In response to this shortage America and Mexico devised a program which allowed for Mexican laborers to be imported for temporary farm and manual labor positions. The focus of this paper involves …

Cal Poly Collaborative Uav Project, Emil Alejandria, Erik Asterlind, Jacob Hladky

Computer Engineering

The Northrup Grumman UAV project, started three years ago, is a collaborative effort between Cal Poly, San Luis Obispo and Cal Poly, Pomona. This collaboration has resulted in several au- tonomous vehicles, including several planes, a ground vehicle, and, most recently, a quad-copter. Last year the focus of the project was the implementation of a basic collision avoidance algo- rithm for the planes. This year, the focus was on maintenance, compatibility, and documentation. Specifically, the goals of this team were to upgrade the autopilot system and to improve the existing collision avoidance algorithm.

Roborodentia Robot 2015, Travis Stuever

Computer Engineering

The Roborodentia 2015 competition was a ring based challenge that had participants move PVC rings from one side of a course to another all within 3 minutes. In order to succeed in this competition there needs to be a good robotic design, thought out use cases, and good solid software.

Fire And Life Safety Analysis- Hotel, Jared Mattern

Fire Protection Engineering: Culminating Experience Project Reports

This report analyzes a hotel located San Francisco, CA for compliance with prescriptive and performance based requirements in accordance with the California Building Code. The first-half of the report addresses the prescriptive-based code requirements of the building. This report outlines the design is compliant with the referenced standards. The performance based portion of the report evaluates if the enclosed parking garage located on Level 1 of the building will maintain tenability in the event of a car fire. Three tenability conditions were evaluated to define a tenable environment, carbon monoxide levels, temperature, and visibility limits. Selecting the location of the …

Fire Protection And Life Safety Analysis Of A Modern Distributon Facility, Nolan Mccarthy

Fire Protection Engineering: Culminating Experience Project Reports

Warehouse facilities are part of the backbone of American industry. The vast amounts of varying goods stored and distributed as part of American business has always driven the need for large, voluminous warehouses. And the increasing size of these facilities over the decades is very closely linked to the capabilities of and advances in fire protection knowledge and technology. Today’s modern distribution centers easily and often exceed one million square feet in area, and the heights are ever increasing. In the 1970’s and early 1980’s, most warehouse facilities were built to an approximate height of 30 feet; this, at the …

Fire Hazard Analysis Of Technical Area 53 Building 1, Los Alamos National Lab, Brett L. Noakes

Fire Protection Engineering: Culminating Experience Project Reports

This is an analysis of a 1970’s vintage building as it is compared to current building codes and standards. The purpose of this document is to assess if the current, as found construction of an existing building could achieve the sometimes more restrictive modern building codes. Both a prescriptive analysis and a performance-based analysis were completed to verify life-safety concerns and criteria as well as construction criteria. The prescriptive analysis compared existing, as found construction to current codes and standards while the prescriptive analysis used modern fire modeling techniques to see how likely fire scenarios would challenge the structure, if …

Fire And Life Safety Analysis Bonderson Engineering Projets Center, Gary Dominguez

Fire Protection Engineering: Culminating Experience Project Reports

A Fire and Life Safety Analysis was performed as one of the requirements for the Master of Science Degree in Fire Protection Engineering from California Polytechnic State University San Luis Obispo. The Fire and Life Safety Analysis consists of a prescriptive analysis as well as a performance based analysis. These analyses were performed on the Bonderson Engineering Projects Center which is part of Cal Poly San Luis Obispo. The prescriptive analysis consisted of the four following parts: Egress Analysis and Design, Fire Detection and Alarm Systems, Water-based Fire Suppression, and Structural Fire Protection. The purpose of the prescriptive analysis was …

Fire Protection Analysis Of Warren J. Baker Center For Science, Aric E. Carracino

Fire Protection Engineering: Culminating Experience Project Reports

A prescriptive and performance based analysis was performed on the Warren J Baker Center for Science on the California Polytechnic San Luis Obispo campus. The code based analysis included reviewing the building’s egress components, structural fire protection, fire sprinkler system, and fire alarm system. This included the requirements of the California Building Code, as well as applicable NFPA codes. Analysis of the egress components of the building revealed several dead end corridors within the building that exceed the maximum allowed length of 50 feet. In addition, the student workspace areas on Level 3 require two exits, but are only provided …

Fire Protection Engineering Analysis For Building 910 - Sandia National Labs/Ca, Mo Mosallaei

Fire Protection Engineering: Culminating Experience Project Reports

This Fire Protection Engineering analysis was performed on Building 910 in Sandia National Laboratories in Livermore, CA to examine the building’s fire safety and fire protection criteria which originally adhered to the 1985 Uniform Building Code. The object of this analysis is to determine the degree of compliance with the prescriptive codes in place today as well compliance with performance based analysis. For the prescriptive analysis consisted of evaluating the buildings occupancy classification, type of construction, egress design, fire detection and alarm systems, fire sprinkler system, Halon System, and structural fire protection are evaluated in terms of the life safety …

Tensile Test Design To Measure Interlayer Adhesion In Investment Casting Shells For Spalling Mitigation, Shelby Boyd, Alex Miller, Jameson Senger

Materials Engineering

We designed a tensile test fixture for a 112 lbf capacity Instron load frame that imparts a normal force on the face of a button epoxied to an investment casting shell sample, delaminating the shell area attached to the button. Using a green standard shell (Group 1), a partially fired standard shell (Group 2), and a green shell with a different third coat (Group 3), we verified that the fixture can measure differences in strength between sample groups. We attached steel buttons to leveled samples with 0.05 mL of Hysol-Loctite 9340 epoxy, let it cure for 48 hours, and tested …

Effect Of Time Delay Between Etching And Adhesive Bonding (“Outlife” Time) On Lap-Shear Strength Of Aluminum Alloys Using Environmentally-Friendly P2 Etch, Josh Barkhimer, Matthew Erich, Gokul Nair

Materials Engineering

Raytheon Company currently uses a Forest Products Laboratory (FPL) paste etchant for preparing aluminum surfaces for adhesive bonding, and FPL is a source of hazardous hexavalent chromium. The goal of this study was to evaluate a less-toxic P2 paste etchant as a possible replacement. Coupons of 2024-T3, 6061-T6, and 7075-T6 grades of aluminum alloy were solvent-degreased, abrasively cleaned, and etched at room temperature using P2 paste following a strict protocol adopted from Raytheon. Coupons were then left exposed to air for assigned time intervals (or “outlife” times) of 0, 1, 4, 8, 16, and 63 or 72 hours. The aluminum …

The Influences Of The Triple Bottom Line Within The Athletic Footwear Industry, Jonathon Chiu

Materials Engineering

The Triple Bottom Line (TBL) is an accounting framework which encompasses three dimensions of work ethics: the social, the environmental, and the financial; it is also known as the three P’s: People, Planet, and Profit. In traditional accounting, the “bottom line” refers to the financial profit or loss a company sustains. The purpose of this study is to comprehend whether or not adopting environmental and social sustainable objectives would have affected the “bottom line” generated for companies within the athletic footwear industry. The companies selected for this study include: Puma SE; Adidas AG; Nike, Inc.; ASICS. These companies were selected …

Effects Of Composition And Solid Solution Strengthening On The Compression Strength Of Iron-Based Hardfacing Alloys, Tyler Wiggins, Samuel Garrison-Terry

Materials Engineering

Three iron-based hardfacing alloys were fabricated to have a tungsten strengthened matrix with varying compositions of 10-15, 20, and 30 wt% tungsten/chrome boride content. The fourth sample was fabricated to have a molybdenum solid solution strengthened matrix with 10-15 wt% W/Cr Boride content. This project focuses on the compressive strength of iron-based hardfacing alloys. Preliminary compression tests with Scoperta iron-based hardfacing alloys showed a need for sample dimension reduction due to compressive loads that could not be met by a 50 kN maximum capacity mechanical testing system. The preliminary tests showed compressive strengths exceeding 2340 MPa. Samples of the current …

Electrochemical Testing Of Aluminum-Lithium Alloys 2050, 2195, And The Current Aerospace Industry Standard 7075 To Measure The Galvanic Corrosion Behavior With Ti-6al-4v, Trent Duncan, Kevin Knight

Materials Engineering

This project aimed to characterize the electrochemical behavior of four different aluminum alloys, and determine how much galvanic corrosion would occur when each alloy was coupled to Ti-6Al-4V. The particular alloys tested were 2050-T3, 2050-T852, 2195-T852, and 7075-T7352. These alloys were tested to determine the effects of aging, and adding lithium, to the corrosion behavior of aluminum alloys. Potentiodynamic polarization curves were generated using the Parstat 2273 potentiostat in accordance with ASTM standard G5, and corrosion analysis software was used to produce Tafel fit lines, which determined the open circuit potential (E_corr) of each sample. Nine tests were …

Measuring And Increasing The Suspension Time Of Lanthanide Oxysulfide Particles With Modifiers Via Fluorescence For Use In Anti-Counterfeiting Applications, Joe Dei Rossi, Tyler Dinslage, Tyler Schelling

Materials Engineering

No abstract provided.

Mechanical Testing Of Multi-Construction Composite Tubes For Use In Fly Fishing Rods, Macormik Hopen

Materials Engineering

A testing protocol was established for measuring the flexure properties of thin-walled tubes constructed of a composite mixture of glass and carbon fibers and epoxy resin for use in Fly Fishing rods. Standard three point bend tests were conducted in accordance with ASTM standard D7329-13 with a span length of six inches. All samples were of the sample length and diameter, allowing direct comparison of the maximum loads reached before failure, which are directly indicative of the Modulus of Rupture (MOR). Two constructions were tested both containing the same unidirectional fiber but with different support structure. These tubes were tested …

Molecular Dynamics Investigation Of The Arabinan-Cellulose Interface For Cellulose Nanocomposite Applications, Luke Thornley

Materials Engineering

Atom level computer simulations of the arabinan and cellulose interface were performed to better understand the mechanisms that give arabinan-cellulose composites (ArCCs) their strength with the goal to improve man-made ArCCs. The molecular dynamics (MD) software LAMMPS was used in conjunction with the ReaxFF/c force field to model the bond between cellulose and arabinan. A cellulose nanocrystal with dimensions 51 x 32 x 8 Å was minimized with various weight percent of water, 0%, 3%, 5%, 8%, 10%, and 12%. After the system was equilibrated for at least 100,000 femtoseconds, an arabinan molecule composed of 8 arabinose rings was added …

Characterization Of Laser Deposited Ti-6al-4v To Nb Gradient Alloys, Clincy Cheung

Materials Engineering

An alloy was fabricated with Ti-6Al-4V and Nb powder using laser deposition (LD) to form a compositional gradient. The gradient was deposited, starting with Ti-6Al-4V powder, onto a forged Ti-6Al-4V substrate in an Argon environment. Niobium (Nb) composition increased by 4-at.% with each layer deposited until the composition reached 100-at.% Nb. This process yielded steep thermal gradients and affected the microstructure and mechanical properties across the compositional gradient. To observe the microstructural changes in the alloy, an etched gradient was viewed with optical microscopy at 1000x, where the grain structure was observed to be an acicular α phase at 100-at.% …

Graduate Internship Report - Templeton High School, Brandi L. Crivello

Agricultural Education: Graduate Internship Reports

This internship and 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 Templeton High School conducted by representatives of the California Department of Education. The internship includes the development of the Agriculture STEM program at Templeton High School. This project will enable students from other schools in the district to create and implement a STEM/CTE program. The supporting material includes information to receive state and local funding, outline the goals and objectives of the program, along with an …

Graduate Internship Report - Linden High School, Christopher Charles Lemos

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 Linden High School conducted by representatives of the California Department of Education. The internship included updating the Agriculture Mechanics program at Linden High School in areas of safety and technology.

Teacher Internship Report - John H. Pitman High School, Amanda Nicole Bevier Bailey

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 John H. Pitman High School conducted by representatives of the California Department of Education. The internship included the development of a school garden for John H. Pitman High School.

Graduate Internship Project & Report - Ron Sa, Ronald Sa

Agricultural Education: Graduate Internship Reports

This internship project includes validation documents that are required in meeting the quality criteria for Agriculture Programs in the secondary level programs for the California Department of Education for the Reedley Middle College High School program. The internship included the development and implementation of a comprehensive program plan RMCHS, which is a new program in its third year of existence. It outlines the goals and objectives of the FFA and school program to include a Program of Activities, and how the program is to follow criteria to meet the quality objectives for an Ag Program. It also contains the development …

Master's Of Agricultural Education, Jessica Nicole Paulisich

Agricultural Education: Graduate Internship Reports

This internship and 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 Foothill High School conducted by representatives of the California Department of Education. The internship includes the development of raised planter beds at the Kern High School District Farm. The school farm is shared with numerous high school agriculture programs in the district, including Foothill High School; this project will enable students from other schools in the district to participate in an SAE in production and/ or …