Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- California Polytechnic State University, San Luis Obispo (37)
- Central Washington University (11)
- University of Kentucky (8)
- The University of Akron (7)
- Western University (4)
-
- Louisiana State University (3)
- Minnesota State University, Mankato (3)
- University of New Orleans (3)
- Michigan Technological University (2)
- Missouri University of Science and Technology (2)
- Morehead State University (2)
- University of Massachusetts Amherst (2)
- University of Tennessee, Knoxville (2)
- City University of New York (CUNY) (1)
- East Tennessee State University (1)
- The University of Maine (1)
- University of North Florida (1)
- Keyword
-
- Manufacturing (7)
- Additive Manufacturing (4)
- Composite (3)
- Friction Stir Welding (3)
- Router (3)
-
- Additive manufacturing (2)
- Bar (2)
- Carbon (2)
- Design (2)
- Duplicator (2)
- Engineering (2)
- Lean (2)
- Machine (2)
- Mold (2)
- Selective Laser Melting (2)
- Thermoforming (2)
- Vacuum (2)
- 3-D printing (1)
- 3D Printing (1)
- 3D printing (1)
- 3d printing (1)
- AISI 4140 Alloy Steel (1)
- Academic -- UNF -- Engineering; Porosity; Casting; Cavitation; Liquid Fracture; Vacancy Cluster; Bifilms (1)
- Academic -- UNF -- Master of Science in Mechanical Engineering; Dissertations (1)
- Actuator (1)
- Additive (1)
- Africa (1)
- Agent-Based Modeling and Simulation (1)
- Agriculture (1)
- Al 2195 (1)
- Publication
-
- Industrial and Manufacturing Engineering (23)
- All Undergraduate Projects (11)
- Mechanical Engineering (11)
- Theses and Dissertations--Mechanical Engineering (8)
- Williams Honors College, Honors Research Projects (7)
-
- Electronic Thesis and Dissertation Repository (4)
- Masters Theses (4)
- All Graduate Theses, Dissertations, and Other Capstone Projects (3)
- University of New Orleans Theses and Dissertations (3)
- Chancellor’s Honors Program Projects (2)
- Dissertations, Master's Theses and Master's Reports (2)
- Electronic Theses and Dissertations (2)
- LSU Doctoral Dissertations (2)
- Morehead State Theses and Dissertations (2)
- Capstones (1)
- Computer Engineering (1)
- LSU Master's Theses (1)
- Master's Theses (1)
- Materials Engineering (1)
- UNF Graduate Theses and Dissertations (1)
Articles 1 - 30 of 90
Full-Text Articles in Engineering
Investigation Of 2195 And 2219 Post Weld Heat Treatments For Additive Friction Stir Lap Welds, Matthew Champagne
Investigation Of 2195 And 2219 Post Weld Heat Treatments For Additive Friction Stir Lap Welds, Matthew Champagne
University of New Orleans Theses and Dissertations
To evaluate potential uses for friction stir welding in additive manufacturing, two separate parts were fabricated, one of 2195-T84 and the other 2219-T87, utilizing fixed pin techniques and additive lap welds. The parts were cut into samples, artificially aged and subjected to Rockwell hardness (HRB), Vickers hardness, micrographic photography, and metallographic imaging on both pre- and post- heat treatment. Additionally, tensile testing was performed on the heat-treated samples. A comparisons of test results showed a minimal increase in the yield strength of the 2195-T84 samples compared to as-welded tensile results obtained from a previous project. The ultimate tensile strength was …
The Vibe, Sarah P. Douglass
The Vibe, Sarah P. Douglass
Capstones
The Vibe is a long-form narrative about where tech is taking the female orgasm. The piece concludes that physiological research is a required next step when creating the climax of the future.
http://sarahpdouglass.com
Dyno-Mite Redesign, Brandon Joseph Miller, Daniel Robert Hoffman, Richard Demedici Young
Dyno-Mite Redesign, Brandon Joseph Miller, Daniel Robert Hoffman, Richard Demedici Young
Mechanical Engineering
The Cal Poly Mechanical Control Systems Laboratory currently employs an outdated device, known as the Motomatic, to teach students about various motor characteristics and control methods. These include open-loop vs. closed-loop control, speed vs. position control, and DC motor response curves. The current device does not function properly and produces unreliable data due to overwhelming non-linear effects such as stiction and shaft misalignment. Our team was tasked with designing a replacement device that retains many of the same educational goals as the original lab procedure, while also adding new educational goals pertaining to the device system dynamics. The new apparatus, …
Real Time And High Fidelity Quadcopter Tracking System, Tyler Mckay Hall
Real Time And High Fidelity Quadcopter Tracking System, Tyler Mckay Hall
Computer Engineering
This project was conceived as a desired to have an affordable, flexible and physically compact tracking system for high accuracy spatial and orientation tracking. Specifically, this implementation is focused on providing a low cost motion capture system for future research. It is a tool to enable the further creation of systems that would require the use of accurate placement of landing pads, payload acquires and delivery. This system will provide the quadcopter platform a coordinate system that can be used in addition to GPS.
Field research with quadcopter manufacturers, photographers, agriculture and research organizations were contact and interviewed for information …
Usa Boccia Ball Ramp For Athletes With Quadriplegia, Alissa A. Koukourikos, Matthew Lee, Nathan Bernards
Usa Boccia Ball Ramp For Athletes With Quadriplegia, Alissa A. Koukourikos, Matthew Lee, Nathan Bernards
Mechanical Engineering
In this report, the design process in creating an assistive device for Boccia Classification 3 (BC3) players is outlined. The initial research steps, including research into the rules of the game, capabilities of the players, and existing products is documented to show where ideas for the product stemmed from. This transitions into requirements that the sponsor requested, and preliminary designs and ideas for the product. Finally, this report explains the details of the final design, which has been analyzed for safety, ease of use, and ability to function under different conditions. The processes of manufacturing and testing will also be …
Friction Stir Welding Manufacturing Advancement By On-Line High Temperature Phased Array Ultrasonic Testing And Correlation Of Process Parameters To Joint Quality, Daniel James Huggett
Friction Stir Welding Manufacturing Advancement By On-Line High Temperature Phased Array Ultrasonic Testing And Correlation Of Process Parameters To Joint Quality, Daniel James Huggett
LSU Doctoral Dissertations
Welding, a manufacturing process for joining, is widely employed in aerospace, aeronautical, maritime, nuclear, and automotive industries. Optimizing these techniques are paramount to continue the development of technologically advanced structures and vehicles. In this work, the manufacturing technique of friction stir welding (FSW) with aluminum alloy (AA) 2219-T87 is investigated to improve understanding of the process and advance manufacturing efficiency. AAs are widely employed in aerospace applications due to their notable strength and ductility. The extension of good strength and ductility to cryogenic temperatures make AAs suitable for rocket oxidizer and fuel tankage. AA-2219, a descendent of the original duralumin …
Numerical Simulation Of Multi-Phase Core-Shell Molten Metal Drop Oscillations, Kaushal Sumaria
Numerical Simulation Of Multi-Phase Core-Shell Molten Metal Drop Oscillations, Kaushal Sumaria
Masters Theses
The surface tension of liquid metals is an important and scientifically interesting parameter which affects many metallurgical processes such as casting, welding and melt spinning. Conventional methods for measuring surface tension are difficult to use for molten metals above temperatures of 1000 K. Containerless methods are can be used to measure the surface tension of molten metals above 1000 K. Oscillating drop method is one such method where a levitated droplet is allowed to undergo damped oscillations. Using the Rayleigh’s theory for the oscillation of force-free inviscid spherical droplets, surface tension and viscosity of the sample can be calculated from …
Electroless Deposition & Electroplating Of Nickel On Chromium-Nickel Carbide Powder, Jeffrey Rigali
Electroless Deposition & Electroplating Of Nickel On Chromium-Nickel Carbide Powder, Jeffrey Rigali
Masters Theses
Engineered components can gain desirable properties when coated with surface materials. Wear-resistant coatings can improve the performance of contacting surfaces and allow for an extended life of the parts. Hard chromium has been the plating material of choice for certain wear and corrosion- resistant coatings because of its desirable combination of chemical resistance, adhesion, and mechanical properties. However, hexavalent chromium, a component of the process for applying hard chromium coatings, has been recognized by the EPA as having hazardous health and environmental impacts. Existing and planned environmental regulations restricts the use of process chemicals containing hexavalent chromium ions. This substantiates …
Application Of Surface Treatments To Improve Fuel Efficiency Of Internal Combustion Engines, Amirabbas Akbarzadeh
Application Of Surface Treatments To Improve Fuel Efficiency Of Internal Combustion Engines, Amirabbas Akbarzadeh
LSU Master's Theses
To improve the tribological performance of contacting surfaces, different surface modification methods can be employed. Surface texturing and surface coating are examples of viable techniques developed for this purpose. Surface texturing involves creating micropatterns on the contacting surfaces while surface coating requires depositing a thin layer of a suitable material on the surface(s) to improve the component’s friction and wear characteristics. The performance of textured surfaces is affected by the geometric characteristic of textures.When dealing with surface coating parameters, the parameters of interests are the type of coating materials and their thicknesses.
The current study aims to experimentally study the …
Process Management And Design Layout Of High Throughput Screening, Anthony Vasquez, Kyle Dupuy
Process Management And Design Layout Of High Throughput Screening, Anthony Vasquez, Kyle Dupuy
Industrial and Manufacturing Engineering
Calibr is a pharmaceutical company in San Diego and growing very quickly rate and need help redesigning their lab layout and in doing so reducing their cycle times and down times in machines. In addition to this, they do not currently have an accurate measurement of how long their processes take in an overall cycle. The objective of this project is to provide Calibr with a redesigned layout to accommodate new equipment as well as a software tool that can output Gantt charts for their planning of their testing. Our approach to this project first included mapping out the facilities …
Surface Topography Formation And Thermographic Analysis In Laser Polishing Of H13 Tool Steel, Joshua D. Miller
Surface Topography Formation And Thermographic Analysis In Laser Polishing Of H13 Tool Steel, Joshua D. Miller
Electronic Thesis and Dissertation Repository
Laser polishing, in its simplest form, is the melting of a small layer of material via laser radiation. This creates a small molten pool which is re-distrusted across the surface, resulting in a much smoother finished surface. Although this process has been around for decades now, there has been a recent insurgence into industrial applications. Despite this, the phenomena that occur during the process are still not fully understood. Therefore, increasing the knowledge surrounding the process would be ideal.
To accomplish this, various input parameters of the process are altered to analyze the effect on the finished polished surface. Through …
3d Printing Of Functional Materials: Surface Technology And Structural Optimization, Dongxing Zhang
3d Printing Of Functional Materials: Surface Technology And Structural Optimization, Dongxing Zhang
Electronic Thesis and Dissertation Repository
There has been a surge in interest of 3D printing technology in the recent 5 years with respect to the equipment and materials, because this technology allows one to create sophisticated and customized parts in a manner that is more efficient regarding both material and time consumption. However, 3D printing has not yet become a mainstream technology within the established manufacturing routes. One primary factor accounting for this slow progress is the lack of a broad variety of 3D printable materials, resulting in limited functions of 3D printed parts.
To bridge this gap, I present an integrated strategy to fabricate …
Ultraprecise Single Point Inverted Cutting Of Right Triangular Prismatic Retroreflectors: Process Enhancements And Cutting Mechanics, Nicolas Milliken
Ultraprecise Single Point Inverted Cutting Of Right Triangular Prismatic Retroreflectors: Process Enhancements And Cutting Mechanics, Nicolas Milliken
Electronic Thesis and Dissertation Repository
Automotive lighting industry relies on retroreflective components to increase driver awareness in low-light conditions since their primary functionality is to return incident light back to the source and/or observer with minimal scatter.
Presently, industry makes use of conventional pin-bundling techniques for the fabrication of the retroreflective components. This method is time consuming, labour intensive, and restrictive with respect to the design process. For these reasons, the ultraprecise single point inverted cutting (USPIC) technology was developed as an efficient alternative for manufacturing novel right triangular prismatic (RTP) retroreflective structures.
This thesis outlines a number of enhancements that improve both the quality …
Additive Manufacturing Process Of 3d Polyaniline Transducers Via Direct Ink Writing, Frederick Benjamin Holness
Additive Manufacturing Process Of 3d Polyaniline Transducers Via Direct Ink Writing, Frederick Benjamin Holness
Electronic Thesis and Dissertation Repository
Electroactive polymers exhibit a change in properties, typically size or shape, in response to electrical stimuli. One class of electroactive polymer of particular interest are the conjugated polymers, whose conjugated backbone structure imparts electrical conductivity. However, this structure imposes processing limitations restricting their form to 2D structures. To overcome this, we develop specially formulated polyaniline- based blends via counter-ion induced thermal doping for the fabrication of 3D conductive structures via direct ink writing. This approach employs multi-material extrusion for the production of structures with passive and active features, rapid device fabrication, and improved design freedom. A model of the thermal …
On The Ramberg-Osgood Stress-Strain Model And Large Deformations Of Cantilever Beams, Ronald J. Giardina Jr
On The Ramberg-Osgood Stress-Strain Model And Large Deformations Of Cantilever Beams, Ronald J. Giardina Jr
University of New Orleans Theses and Dissertations
In this thesis the Ramberg-Osgood nonlinear model for describing the behavior of many different materials is investigated. A brief overview of the model as it is currently used in the literature is undertaken and several misunderstandings and possible pitfalls in its application is pointed out, especially as it pertains to more recent approaches to finding solutions involving the model. There is an investigation of the displacement of a cantilever beam under a combined loading consisting of a distributed load across the entire length of the beam and a point load at its end and new solutions to this problem are …
Analysis Of Variable Insensitive Friction Stir Welding Parameters, Robert L. Marrero Jr
Analysis Of Variable Insensitive Friction Stir Welding Parameters, Robert L. Marrero Jr
University of New Orleans Theses and Dissertations
Friction Stir Welding (FSW) was used to perform a Design of Experiment (DOE) to determine the welding parameters effects on yielding consistent mechanical properties across the length of the weld. The travel speed was varied across set forge force and RPM conditions, to find a dataset that will yield consistent mechanical properties independent of the travel speed. Six different welds were completed on two different aluminum panels, the advancing side being Aluminum alloy 2195-T8 at a thickness of .350”, with the retreating side being Aluminum alloy 2219-T851 with a gauge thickness of .360”. A Left-hand Right-hand self-reacting pin tool was …
Inyo National Forest Sign Maker, Brandon Mainini, Lauren Kirk, Alec Boyer
Inyo National Forest Sign Maker, Brandon Mainini, Lauren Kirk, Alec Boyer
Mechanical Engineering
No abstract provided.
Yeager Multi-Function Tool Ql+, Osiel Flores-Hernandez, Carter Wilson, David Wright, Mitchell Jackson
Yeager Multi-Function Tool Ql+, Osiel Flores-Hernandez, Carter Wilson, David Wright, Mitchell Jackson
Industrial and Manufacturing Engineering
No abstract provided.
Design Of A Process To Implement An Annual Community Fundraiser For Sprout Up, Katherine Lynette Phillips, Kimberly Nicole Walter
Design Of A Process To Implement An Annual Community Fundraiser For Sprout Up, Katherine Lynette Phillips, Kimberly Nicole Walter
Industrial and Manufacturing Engineering
Sprout Up—in San Luis Obispo—is currently a non-profit organization that teaches free environmental science education to first and second graders around the San Luis Obispo area. Due to recent circumstances, Sprout Up will soon be losing its non-profit status, and therefore they will be losing their funding as well. Their problem is that they need a stable annual fundraiser that will help the organization continue to provide free services to local elementary schools as a Cal Poly club rather than a non-profit. Multi-criteria analysis techniques were used to determine what would be the best solution to their problem and found …
Addressing The Existence Of Overcrowding In The Cal Poly Rec Center Exercise Rooms, Josue Alvarez, Robert Hemphill
Addressing The Existence Of Overcrowding In The Cal Poly Rec Center Exercise Rooms, Josue Alvarez, Robert Hemphill
Industrial and Manufacturing Engineering
Cal Poly’s Rec Center is a facility that has been extremely popular among students ever since its initial creation many decades ago. Despite its popularity being a positive quality in most ways, it does ultimately yield a certain issue for the users of the facility; the issue of overcrowding. This senior project aimed to analyze the problem of overcrowding at the Rec Center and improve upon its most critical areas of impact. Ultimately, we identified the Rec Center’s exercise rooms as the most impacted area, with the issue of equipment unavailability being the largest factor. Thus, we designed alternative equipment …
Design For Waste Reduction And Efficiency Improvement For The Construction Usage Of The Tower Crane, George Merida, Roman Richard
Design For Waste Reduction And Efficiency Improvement For The Construction Usage Of The Tower Crane, George Merida, Roman Richard
Industrial and Manufacturing Engineering
Webcor Concrete Group’s on-site tower crane is currently experiencing unknown forms of inefficiency. The project team used the DMAIC methodology to implement Define, Measure, Analyze, Improve, and Control in order to guide and structure the project. After the project team formulated a problem statement, observations were collected of tower crane deliveries resulting in 470 individual data points. The data was then analyzed using basic statistics, histograms, and lean manufacturing tools in order to identify wastes and inefficiencies. Once the wastes and inefficiencies were identified, root cause analysis was performed. The identified root causes were then used as the basis for …
Design Of Process Improvements To Increase Field Work Efficiency At Webcor Concrete Group, Fiona Blackburn
Design Of Process Improvements To Increase Field Work Efficiency At Webcor Concrete Group, Fiona Blackburn
Industrial and Manufacturing Engineering
This study set out to analyze and improve field work efficiency at Webcor Concrete Group, a subcontractor working on a new housing project at the Cal Poly, San Luis Obispo campus. Specifically, they would like to access their performance in regards to end-of-break to back-to-work time and the 30-30 rule, which states that everything a field worker needs should be accessible within 30 seconds or 30 feet. The problem statement is that Webcor wishes to utilize their field hours 5% more efficiently through a study of current shortcomings and recommended improvements. A review of the literature generated process improvement ideas …
Design Of A Decision-Aiding Model Between Subtractive Manufacturing And 3d-Printing, Tuan Minh Ryan Pham, Colton Harrison
Design Of A Decision-Aiding Model Between Subtractive Manufacturing And 3d-Printing, Tuan Minh Ryan Pham, Colton Harrison
Industrial and Manufacturing Engineering
3D-printing is becoming more and more widely used in industry. As this happens, manufacturers are becoming unsure of when to use this new technology and when to trudge on with subtractive (conventional) manufacturing processes. Subtractive manufacturing processes are well-established within many manufacturing companies due to its high efficiencies and low costs. However, 3D-printing offers a greater level of customization, can be automated, and can easily have designs transferred via computer files. Each method has its respective advantages, however, each one also has its downfalls. Subtractive manufacturing produces unnecessary waste, is limited from creating certain geometries, and requires a skilled laborer …
Manufacturing Process And Product Design For Mass Production Of Environmentally-Friendly Fishing Lures And Weights, David Ichlokmanian, Justin Jake Bert
Manufacturing Process And Product Design For Mass Production Of Environmentally-Friendly Fishing Lures And Weights, David Ichlokmanian, Justin Jake Bert
Industrial and Manufacturing Engineering
The current industry standard for the manufacture of recreational fishing tackle uses lead-based weights and PVC or silicone-based lures. Both materials have serious negative effects on those who handle these products, waterfowl, fish, and other animals that may consume this discarded tackle. The goal of this project is to find and design an environmentally safe process and product alternative for this industry. To do this, we researched a large amount of viable safe materials for weights and lures and used decision matrices to decide on the best one. We found that brass would be the most suitable alternative and created …
Design Of An Automated Welding Process For Synergy Mfg., Parsa Bakhtiari
Design Of An Automated Welding Process For Synergy Mfg., Parsa Bakhtiari
Industrial and Manufacturing Engineering
This senior project involves a partnership with a local off-road parts manufacturer called Synergy Mfg. Synergy is experiencing a rapid increase in demand that is difficult to meet with their current processes. Because of this issue, Synergy is exploring automation in order to decrease their cycle times and increase their production output. More specifically, this report concentrates on automating a manual welding process that has a lengthy cycle time which causes Synergy’s difficulties with meeting demand. Due to time constraints, this project focused on the automation of a welding process for only one part that Synergy produces. This part contains …
Redesign Of Good Karma Bike’S Facility Layout And Bike Storage Process, Ryan Phillip Ogan, Derek Chung, Tommy Chang
Redesign Of Good Karma Bike’S Facility Layout And Bike Storage Process, Ryan Phillip Ogan, Derek Chung, Tommy Chang
Industrial and Manufacturing Engineering
Good Karma Bikes is a non-profit organization that services and restores bikes that customers bring into the shop. Good Karma Bikes has plans for a dramatic increase in storage capacity for the next few years. Good Karma Bike’s warehouse area is currently overflowing with bikes due to the large increase in demand. A redesign of the warehouse layout is needed to handle the increase of incoming bikes and to improve product flow through the space. The project team’s objectives are to:
- Improve accessibility and reduce time it takes to unrack a bike
- Increase space utilization by improving bike storage capacity …
Designing An Information System To Efficiently Coordinate Film Screenings, Galen Dougherty
Designing An Information System To Efficiently Coordinate Film Screenings, Galen Dougherty
Industrial and Manufacturing Engineering
This paper explains the engineering concepts design efforts used to build an information system to efficiently coordinate film screenings. The market served is an emerging group of film makers and production companies that have limited resources. The application aims to save both time and money in coordination efforts for screening films in the local community. The project case examined is a small production start-up from Cal Poly San Luis Obispo named Yellow Glass Media. The design described in the paper specifically targets their needs which are assumed to be representative of the needs of the larger emerging market. The design …
Design Of An Improved Toolbox And Connex For Webcor Builders, Veronica Ana Valley, Jamie Mari Kusumoto
Design Of An Improved Toolbox And Connex For Webcor Builders, Veronica Ana Valley, Jamie Mari Kusumoto
Industrial and Manufacturing Engineering
Webcor builders asked the Senior Project team to create a design of an organized job box on Solidworks that improves worker efficiency, improves jobsite organization, and limits financial losses, which are common tool-related issues for the company. As a group, the members analyzed the job box current situation using multiple perspectives to create two designs, one streamlined by each project group member. The project group developed each of the designs based on a current state analysis in which we analyzed the job box, simulated finding tools to create multiple motion studies, collected worker feedback, conducted an ergonomic analysis, conducted a …
Polar Coordinate Farm Bot Final Project Report, John Brown, Kasenia Colombo, Lucas Salem, Ning Jeng, Rory Stothers, Sam Lees
Polar Coordinate Farm Bot Final Project Report, John Brown, Kasenia Colombo, Lucas Salem, Ning Jeng, Rory Stothers, Sam Lees
Industrial and Manufacturing Engineering
FarmBot Inc. is a local startup that is advancing precision agriculture through automation and open source technology. The original FarmBot model, FarmBot Genesis, operates over a rectangular area of 3 x 1.5 meters. It plants, waters, weeds and grows produce autonomously using CNC technology. Our project sponsor and inventor of FarmBot, Rory Aronson, tasked our team with developing and testing a polar coordinate farmbot capable of performing on par with the Cartesian farmbot in growing a circular vegetable garden in a user’s backyard. A successful project was defined by meeting specific customer requirements and engineering specifications predetermined and discussed with …
Predictive Analytics In Forecasting, Matthew Suarez
Predictive Analytics In Forecasting, Matthew Suarez
Industrial and Manufacturing Engineering
Predicting future demand can be of tremendous help to businesses in scheduling and allocating appropriate amounts of material and labor. The more accurate these predictions are, the more the business will save money by matching supply with demand as closely as possible. The approach for an accurate forecast, and the goal of this project, involves using data analytics techniques on past historical sales data. Working with Campus Dining, a year's worth of their daily sales data will be analyzed and ultimately used for the end result of both an accurate forecasting technique and a way to display the results in …