Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Manufacturing (109)
- Computer-Aided Engineering and Design (22)
- Operations Research, Systems Engineering and Industrial Engineering (18)
- Business (17)
- Other Mechanical Engineering (17)
-
- Materials Science and Engineering (15)
- Industrial Engineering (13)
- Engineering Science and Materials (12)
- Applied Mechanics (10)
- Physical Sciences and Mathematics (9)
- Electro-Mechanical Systems (8)
- Mechanics of Materials (7)
- Biomedical Engineering and Bioengineering (6)
- Other Engineering Science and Materials (6)
- Structural Materials (6)
- Aerospace Engineering (5)
- Civil and Environmental Engineering (5)
- Energy Systems (5)
- Computer Sciences (4)
- Construction Engineering and Management (4)
- Electrical and Computer Engineering (4)
- Entrepreneurial and Small Business Operations (4)
- Heat Transfer, Combustion (4)
- Metallurgy (4)
- Accounting (3)
- Acoustics, Dynamics, and Controls (3)
- Automotive Engineering (3)
- Biomedical Devices and Instrumentation (3)
- Institution
-
- California Polytechnic State University, San Luis Obispo (38)
- Brigham Young University (11)
- Central Washington University (11)
- The University of Akron (10)
- University of Mississippi (8)
-
- Purdue University (6)
- University of Texas Rio Grande Valley (6)
- Clemson University (5)
- Old Dominion University (5)
- University of Kentucky (5)
- University of Nebraska - Lincoln (5)
- Selected Works (4)
- Minnesota State University, Mankato (3)
- Missouri University of Science and Technology (3)
- University of South Carolina (3)
- Georgia Southern University (2)
- Michigan Technological University (2)
- Olivet Nazarene University (2)
- University of Arkansas, Fayetteville (2)
- University of Tennessee, Knoxville (2)
- University of Texas at El Paso (2)
- Utah State University (2)
- Virginia Commonwealth University (2)
- Washington University in St. Louis (2)
- Western Kentucky University (2)
- City University of New York (CUNY) (1)
- De La Salle University (1)
- East Tennessee State University (1)
- Embry-Riddle Aeronautical University (1)
- Iowa State University (1)
- Publication Year
- Publication
-
- Mechanical Engineering (23)
- Theses and Dissertations (14)
- All Undergraduate Projects (11)
- Industrial and Manufacturing Engineering (10)
- Williams Honors College, Honors Research Projects (10)
-
- Honors Theses (8)
- All Theses (4)
- All Graduate Theses, Dissertations, and Other Capstone Projects (3)
- Department of Mechanical and Materials Engineering: Faculty Publications (3)
- Doctoral Dissertations (3)
- Mechanical Engineering Faculty Publications (3)
- Mechanical Engineering Faculty Publications and Presentations (3)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (2)
- Capstone Design Expo Posters (2)
- Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research (2)
- Electronic Theses and Dissertations (2)
- Master's Theses (2)
- Masters Theses (2)
- Masters Theses & Specialist Projects (2)
- McKelvey School of Engineering Theses & Dissertations (2)
- Mechanical & Aerospace Engineering Theses & Dissertations (2)
- Open Access Theses & Dissertations (2)
- Scholar Week 2016 - present (2)
- The Summer Undergraduate Research Fellowship (SURF) Symposium (2)
- 2010 World Energy Justice Conference (November 5) (1)
- Aerospace Engineering (1)
- All Dissertations (1)
- Angelo King Institute for Economic and Business Studies (AKI) (1)
- BioResource and Agricultural Engineering (1)
- Biomedical Engineering (1)
- Publication Type
- File Type
Articles 91 - 120 of 162
Full-Text Articles in Mechanical Engineering
Note On The Rate And Energy Efficiency Limits For Additive Manufacturing, Timothy Gutowski, Sheng Jiang, Daniel Cooper, Gero Corman, Michael Hausmann, Jan-Anders Manson, Timo Schudeleit, Konrad Wegener, Matias Sabelle, Jorge Ramos-Grez, Dusan P. Sekulic
Note On The Rate And Energy Efficiency Limits For Additive Manufacturing, Timothy Gutowski, Sheng Jiang, Daniel Cooper, Gero Corman, Michael Hausmann, Jan-Anders Manson, Timo Schudeleit, Konrad Wegener, Matias Sabelle, Jorge Ramos-Grez, Dusan P. Sekulic
Mechanical Engineering Faculty Publications
We review the process rates and energy intensities of various additive processing technologies and focus on recent progress in improving these metrics for laser powder bed fusion processing of metals, and filament and pellet extrusion processing of polymers and composites. Over the last decade, observed progress in raw build rates has been quite substantial, with laser metal processes improving by about 1 order of magnitude, and polymer extrusion processes by more than 2 orders of magnitude. We develop simple heat transfer models that explain these improvements, point to other possible strategies for improvement, and highlight rate limits. We observe a …
Considering Manufacturing In The Design Of Thick-Panel Origami Mechanisms, Erica Brunson Crampton
Considering Manufacturing In The Design Of Thick-Panel Origami Mechanisms, Erica Brunson Crampton
Theses and Dissertations
Origami has been investigated and demonstrated for engineering applications in recent years. Many techniques for accommodating the thickness of most engineering materials have been developed. In this work, tables comparing performance and manufacturing characteristics are presented. These tables can serve as useful design tools for engineers when selecting an appropriate thickness-accommodation technique for their application. The use of bent sheet metal for panels in thick-origami mechanisms shows promise as a panel design approach that mitigates several trade-offs between performance and manufacturing characteristics. A process is described and demonstrated that can be employed to use sheet metal in designs of origami-adapted …
Hysteresis Heating Of Railroad Bearing Thermoplastic Elastomer Suspension Element, Oscar O. Rodriguez, Arturo A. Fuentes, Constantine Tarawneh, Robert E. Jones
Hysteresis Heating Of Railroad Bearing Thermoplastic Elastomer Suspension Element, Oscar O. Rodriguez, Arturo A. Fuentes, Constantine Tarawneh, Robert E. Jones
Mechanical Engineering Faculty Publications and Presentations
Thermoplastic elastomers (TPE’s) are increasingly being used in rail service in load damping applications. They are superior to traditional elastomers primarily in their ease of fabrication. Like traditional elastomers they offer benefits including reduction in noise emissions and improved wear resistance in metal components that are in contact with such parts in the railcar suspension system. However, viscoelastic materials, such as the railroad bearing thermoplastic elastomer suspension element (or elastomeric pad), are known to develop self-heating (hysteresis) under cyclic loading, which can lead to undesirable consequences. Quantifying the hysteresis heating of the pad during operation is therefore essential to predict …
Open Source Multi-Head 3d Printer For Polymer-Metal Composite Component Manufacturing, J. Laureto, Joshua M. Pearce
Open Source Multi-Head 3d Printer For Polymer-Metal Composite Component Manufacturing, J. Laureto, Joshua M. Pearce
Department of Materials Science and Engineering Publications
As low-cost desktop 3D printing is now dominated by free and open source self-replicating rapid prototype (RepRap) derivatives, there is an intense interest in extending the scope of potential applications to manufacturing. This study describes a manufacturing technology that enables a constrained set of polymer-metal composite components. This paper provides (1) free and open source hardware and (2) software for printing systems that achieves metal wire embedment into a polymer matrix 3D-printed part via a novel weaving and wrapping method using (3) OpenSCAD and parametric coding for customized g-code commands. Composite parts are evaluated from the technical viability of manufacturing …
Additive Manufacturing For Post-Processing, Nathan D. Goodwin, Andrew Furmidge
Additive Manufacturing For Post-Processing, Nathan D. Goodwin, Andrew Furmidge
Mechanical Engineering
Additive Manufacturing for Post Processing (AMPP) is a team comprised of two Cal Poly Mechanical Engineering students: Nathan Goodwin and Andrew Furmidge. The project is focused in the area of metal additive manufacturing (AM) machines, which are still a developing technology. Improvements have been made to the quality of the machines in the past years, but many limitations still exist. One of these is the inability to print parts that are larger than the build volume. In an effort to solve this problem, whole parts are divided into pieces that are printed individually. This team’s senior project is to create …
The Development Of A Vacuum Forming System For Kydex® And Other Thermoplastic Sheet, Andrew G. Smith
The Development Of A Vacuum Forming System For Kydex® And Other Thermoplastic Sheet, Andrew G. Smith
Electronic Theses and Dissertations
Vacuum forming is a popular, cost effective method amongst large and small scale applications. The method is used to mold a material to the surface of a mold/pattern in order to create a negative copy for reproduction or an object in positive form. The prototype vacuum forming system developed and documented herein is of a membrane-seal type that consists of three (3) principle parts: radial platen, Hinged Frame and Platen Support Assembly, and a PVC surge tank. Each part is described in detail through design, manufacturing, and testing processes. The design supports functional versatility, small scale molding, and uses readily …
Sae Baja - Front Suspension And Steering, Gabriel Brumm, Luke Lambert, John Saliba
Sae Baja - Front Suspension And Steering, Gabriel Brumm, Luke Lambert, John Saliba
Scholar Week 2016 - present
The SAE Baja Front Suspension Senior Design Team has successfully chosen a design alternative to build, test, and possibly revise as this project moves forward. The team learned about the problems that occurred with the steering and suspension systems last year at the SAE Baja competition from Dr. Allen and ONU Baja team members that attended competition last year (which includes senior design team member John Saliba). After understanding the failures that occurred last year, the design team set design goals with a focus on increased durability, increased driver control and vehicle handling, and reduced weight.
A Study Into The Production Efficiency Of Cal Poly Chocolates, Fernando Calderon
A Study Into The Production Efficiency Of Cal Poly Chocolates, Fernando Calderon
Industrial and Manufacturing Engineering
The project objective was to: identify ways to reduce the production cost of Cal Poly Chocolates. The project was executed through the DMAIC approach, a data driven improvement cycle. Using several industrial engineering tools, six improvement opportunities were found. Three project deliverables were created and three process changes were recommended. The total annual savings, if recommendations are implemented, sum to $1700.
High Accessibility Cabinet Insert, Matthew Leal
High Accessibility Cabinet Insert, Matthew Leal
All Undergraduate Projects
Watching grandparents and parents get older, the struggle of day-to-day activities generally increases. One of the most recurring issues the older generation experiences nearly daily is their inability to reach dishes, glassware, and other things on the topmost shelves of a kitchen. Not only is it difficult for them to use things such as stepstools, it also becomes increasingly dangerous. With age, a fall from any height could be catastrophic. With this scenario in mind, a user-friendly cabinet insert would be a very effective way to combat this issue. However, many existing models of cabinet designed to fit these requirements …
Design And Prototype Of Next Generation Nascar Brake Caliper, Jesse Crowder, John Knighton, Lenny Ports, Miranda Snyder
Design And Prototype Of Next Generation Nascar Brake Caliper, Jesse Crowder, John Knighton, Lenny Ports, Miranda Snyder
Capstone Design Expo Posters
Efficient braking is pivotal to the success of a NASCAR team. Braking occurs when the brake pedal is depressed, causing hydraulic pressure within the caliper housing and on the pistons, which forces the pistons to push the brake pads against the rotors reducing the vehicle’s speed due to the high friction between the pads and rotors. High performance brake calipers are arguably one of the most crucial components of a race car braking system. Short track brake calipers were designed to efficiently decelerate vehicles traveling upwards of one-hundred twenty miles per hour. This is an essential function of vehicles on …
Automated Din Rail Cut And Punch Machine, Youssif Alkheder, Gaston Charreun, Derrian Flemings, Jonathan Liss
Automated Din Rail Cut And Punch Machine, Youssif Alkheder, Gaston Charreun, Derrian Flemings, Jonathan Liss
Capstone Design Expo Posters
Our project’s main goal is to optimize the process of punching and cutting DIN rail in a manufacturing setting. The current method for cutting and punching DIN rails is tedious and simply too time consuming. An operator is needed to manually load the DIN rail into the cutter, measure the required length and activate the cutter. While this simple process may not take too long at first glance, companies, like Weidmuller, must be able to produce large-quantity orders to successfully meet the demands of their customers. By turning to automation, we are effectively reducing the amount of time it takes …
Utilizing Reprap Style 3d Printers For The Manufacturing Of Composite Heat Exchangers, John Laureto
Utilizing Reprap Style 3d Printers For The Manufacturing Of Composite Heat Exchangers, John Laureto
Dissertations, Master's Theses and Master's Reports
The low cost 3D printing market is currently dominated by the application of RepRap (self-replicating rapid-prototyper) variants. Presented in this document are practical utilizations of RepRap technology. Developed are innovative processes to manufacture composite materials systems for thermal management solutions.
First, a laser polymer welder system is validated by quantifying maximum peak load and weld width of linear low density polyethylene (LLDPE) lap welds as a function of linear energy density. The development of practical engineering data, in this application, is critical to producing mechanically durable welds. Developed laser and printer parameter sets allow for manufacturing of LLDPE multi-layered heat …
Metal Cutting And Manufacturing Economics Project For Freshmen, Hüseyin Sarper, Nebojsa I. Jaksic, Linda Vahala
Metal Cutting And Manufacturing Economics Project For Freshmen, Hüseyin Sarper, Nebojsa I. Jaksic, Linda Vahala
Electrical & Computer Engineering Faculty Publications
This paper describes a laboratory experiment and a team project to teach manufacturing concepts to new students. This project is one of two team projects of 1.5 credit portion of a two-credit course in exploration of engineering and technology. This course teaches students skills they need late and teamwork is a major skill that they acquire. They organize into a group with specialized responsibilities for the purpose of calculating the total production time and cost of a manufactured part using turning, drilling, and milling operations. Students also learn or improve spreadsheet skills while performing data entry and necessary machining calculations. …
Eliminating The Illusion Of Learning From Engineering Courses, Jason Weaver
Eliminating The Illusion Of Learning From Engineering Courses, Jason Weaver
Faculty Publications
This paper describes the efforts of the author to incorporate tools into an undergraduate engineering course to help facilitate better learning and assess proficiency more effectively by avoiding the illusion of learning. Several techniques are used, including suggestions from the recent book Make It Stick by Brown, Roediger, and McDaniel. Student feedback and instructor observations are discussed, and future recommendations for the course are given
Pin Router Duplicator Base, Matthew Tebo
Pin Router Duplicator Base, Matthew Tebo
All Undergraduate Projects
The idea for the following project came from the Lean Manufacturing class that is offered at Central Washington University. In this class the manufacturing processes is demonstrated through the production of guitar kits. A problem with the class is that the CNC machine gets backed up causing a bottleneck in the production line. The solution to this problem was to make a pin router duplicator. A pin router duplicator is a device that allows the operator to trace a finished part with a pin while a router mimics its movements, cutting a new part. The component that is looked into …
Wardjet Waterjet Cutting Head Actuator Design, Micah Steiner, Jacob D. Augustynovich, Benjamin Heckert
Wardjet Waterjet Cutting Head Actuator Design, Micah Steiner, Jacob D. Augustynovich, Benjamin Heckert
Williams Honors College, Honors Research Projects
In an effort to increase efficiency and productivity, WARDJet was seeking a better actuation method for the cutting head on their waterjets. Current actuation methods were, for the most part, purely mechanical, relying on compressed air, springs, and water pressure to open and close the valve to 60,000 psi of water. Increasing the speed of the on/off cycle times of the waterjet would allow for faster movements of the cutting head from one cut to the next, increasing the overall amount of products cut in a day, week, and year. This obviously points to increased sales, increased profit, and increased …
Compression Molded Composite Component, Greg Hermansen, Larsson Johnson, Joanne Medrano, Kyle Hammell
Compression Molded Composite Component, Greg Hermansen, Larsson Johnson, Joanne Medrano, Kyle Hammell
Mechanical Engineering
The following final design report outlines the design and fabrication of a carbon fiber compression molded sunglasses case. It intends to guide the development of a future lab activity for a composites undergraduate course at Cal Poly – San Luis Obispo. The activity aims to support an educational investigation in "out-of-autoclave" composites manufacturing methods, such as compression molding, which offer some key benefits over autoclave molding. The methodology behind the creation of a conceptual design, an initial prototype, and a final product is laid out in detail below.
Flow Stress And Microstructure Models Of Alloys, Lars-Erik Lindgren
Flow Stress And Microstructure Models Of Alloys, Lars-Erik Lindgren
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Design For Manufacturability: Off-Road Toyota Bumper, Drew Donlon
Design For Manufacturability: Off-Road Toyota Bumper, Drew Donlon
Industrial and Manufacturing Engineering
The purpose of this project is to design a new off-road bumper that is improved from the stock form of a 1996-2002 Toyota 4Runner and a 1996-2004 Toyota Tacoma. The current state of the component is too weak to endure to off-road endeavors, and a kit bumper market is virtually untapped for these vehicles. The objectives of this project were met by redesigning the stock front bumper, conducting a finite element analysis on the model to test for strength, prototyping the bumper with CNC cut cardboard, and conducting a full cost analysis including the costs for waterjet and laser cutting …
Heat Generation In The Railroad Bearing Thermoplastic Elastomer Suspension Element, Oscar O. Rodriguez, Juan Carbone, Arturo A. Fuentes, Robert E. Jones, Constantine Tarawneh
Heat Generation In The Railroad Bearing Thermoplastic Elastomer Suspension Element, Oscar O. Rodriguez, Juan Carbone, Arturo A. Fuentes, Robert E. Jones, Constantine Tarawneh
Mechanical Engineering Faculty Publications and Presentations
The main purpose of this ongoing study is to investigate the effect of heat generation within a railroad thermoplastic elastomer suspension element on the thermal behavior of the railroad bearing assembly. Specifically, the purpose of this project is to quantify the heat generated by cyclic loading of the elastomer suspension element as a function of load amplitude, loading frequency, and operating temperature. The contribution of the elastomer pad to the system energy balance is modeled using data from dynamic mechanical analysis (DMA) of the specific materials in use for that part. DMA is a technique that is commonly used to …
Heteromorphic To Homeomorphic Shape Match Conversion Toward Fully Automated Mesh Morphing To Match Manufactured Geometry, Robert Ivan Yorgason
Heteromorphic To Homeomorphic Shape Match Conversion Toward Fully Automated Mesh Morphing To Match Manufactured Geometry, Robert Ivan Yorgason
Theses and Dissertations
The modern engineering design process includes computer software packages that require approximations to be made when representing geometries. These approximations lead to inherent discrepancies between the design geometry of a part or assembly and the corresponding manufactured geometry. Further approximations are made during the analysis portion of the design process. Manufacturing defects can also occur, which increase the discrepancies between the design and manufactured geometry. These approximations combined with manufacturing defects lead to discrepancies which, for high precision parts, such as jet engine compressor blades, can affect the modal analysis results. In order to account for the manufacturing defects during …
Wire + Arc Additive Manufacturing, Micheal Santangelo
Wire + Arc Additive Manufacturing, Micheal Santangelo
GS4 Georgia Southern Student Scholars Symposium
Additive manufacturing is a rapidly developing technology which promises to drastically reduce the cost and waste associated with manufacturing parts. However, current systems of additive manufacturing used for creating metal parts which are suitable for use in the aerospace, automotive, and defense industries are complex, expensive, and not robust enough to produce a wide range of part features and geometries. A relatively new method, called wire arc additive manufacturing(WAAM) is a low cost option that can create parts which have a near-net shape, and only require a small amount of post processing before they are ready for use. This system, …
The Relationship Of Corporate Financial Performance And Innovation Among Manufacturing Industries, Charlaine T. Chong, Samantha R. Chua, Ma. Catrina S. Dy, Antonio Miguel E. Villavicencio
The Relationship Of Corporate Financial Performance And Innovation Among Manufacturing Industries, Charlaine T. Chong, Samantha R. Chua, Ma. Catrina S. Dy, Antonio Miguel E. Villavicencio
Angelo King Institute for Economic and Business Studies (AKI)
Innovation is becoming a critical determinant of the survival and advancement of firms. Despite this realization, there is a dearth of literature that tackles the subject matter and its specific role in corporate settings remains vague. Using corporate data on East and Southeast Asian manufacturing firms from 2008 to 2013, this study aims to identify the impact of corporate financial performance on research and development (R&D) expenditure as a measure of innovation. On the whole, the researchers utilized random effects (REM) and fixed effects (FEM) models to establish the relationship between R&D and corporate performance. The researchers, then, identified the …
Manufacturing And Characterization Of Energetic Materials, Carlos Alberto Catzin
Manufacturing And Characterization Of Energetic Materials, Carlos Alberto Catzin
Open Access Theses & Dissertations
Few products take several years of research effort to be synthesize yet disintegrate in scarcely millionths of a second when used. Despite their short lifespan energetic materials, particularly high explosives, are in demand as never before by the Aerospace, Defense, Energy, Gas, Mining, and Oil Industry for their unique properties. One class of high explosives known as polymer bonded explosives (PBXs) are popularly used in a wide variety of applications ranging from solid rocket propellants to the main explosive charge in conventional ammunitions. A key characteristic behind the popularity of PBXs in comparison to other high explosives is their handling …
Feasibility Study Of Custom Manufacturing Of Ionic Polymer-Metal Composite Sensors, Shelby E. Nelson
Feasibility Study Of Custom Manufacturing Of Ionic Polymer-Metal Composite Sensors, Shelby E. Nelson
UNLV Theses, Dissertations, Professional Papers, and Capstones
The ability to create an ion exchange membrane with any shape or thickness through custom manufacturing techniques is highly desirable in ionic polymer-metal composite (IPMC) research. This is caused by the poor selection and limited availability of certain thicknesses of commercial ion exchange membranes. The objective of this study is to determine the feasibility of manufacturing custom ion exchange membranes for IPMC sensors. The manufacturing methods used in this study are extrusion, injection molding, and hot pressing. A commercial membrane from Golden Energy Fuel Cells (GEFC) is used as a comparison. After the membranes are fabricated, certain properties of the …
Transcatheter Heart Valve Subassembly Device, Adam Aslam, Matthew Bezkrovny, Daniel Degree
Transcatheter Heart Valve Subassembly Device, Adam Aslam, Matthew Bezkrovny, Daniel Degree
Mechanical Engineering
No abstract provided.
Effect Of Manufacturing Processes On The Loss Factor And Other Mechanical Properties Of Kenaf Fiber-Reinforced Composites, Brian P. Spackman
Effect Of Manufacturing Processes On The Loss Factor And Other Mechanical Properties Of Kenaf Fiber-Reinforced Composites, Brian P. Spackman
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The characteristics essential for manufacturing parts and products are not well known for natural fiber-reinforced composite materials. Natural fibers display properties similar to glass fibers, and present a more environmentally friendly option for manufacturing composite materials. This research investigates various parameters in the manufacture of kenaf fiber-reinforced composites including cure time, density, matrix hardener ratio, surface treatment, and fiber length and examines the effect they have on mechanical properties of the composite material. Several samples were created and subjected to a vibrational test. Using known relationships, mechanical properties were extracted from the test results. Samples were found to exhibit repeatable …
Dmd-Based 3d Micro-Manufacturing, Jae-Won Choi, Michael Irwin, Ryan Wicker
Dmd-Based 3d Micro-Manufacturing, Jae-Won Choi, Michael Irwin, Ryan Wicker
Dr. Jae-Won Choi
The development of the Digital Micromirror Device (DMD) by Texas Instruments has made a significant breakthrough in 3D micro-manufacturing, and in particular, in the area of additive layer-based manufacturing. One area of particular interest for using DMD technology is microstereolithography; a technology that builds 3D shapes through successive photopolymerization of individual thin 2D layers that are stacked vertically. A DMD-based projection microstereolithography system and a robust micro-manufacturing process have been developed. This system and various micro-fabricated 3D structures with features on the order of 10 microns, including recent advancements in multimaterial micro-fabrication, will be presented and described.
Mechanism Of Fatigue Performance Enhancement In A Superhard Nanoparticles Integrated Nanocomposites By A Hybrid Manufacturing Technique, Dong Lin, Chang Ye, Yiliang Liao, C. Liu, Gary Cheng
Mechanism Of Fatigue Performance Enhancement In A Superhard Nanoparticles Integrated Nanocomposites By A Hybrid Manufacturing Technique, Dong Lin, Chang Ye, Yiliang Liao, C. Liu, Gary Cheng
Dr. Chang Ye
A hybrid manufacturing process, which contains Laser Sintering (LS) and Laser shock peening (LSP), is introduced to generate iron-TiN nanoparticle nanocomposites. It is a two-step process including LS followed with LSP. Before LS, TiN nanoparticles mixed with iron powders are coated on samples surface. After LS, TiN nanoparticles are embedded into iron matrix to strengthen materials. Then LSP is performed to introduce work hardening and compressive residual stress. The existed nanoparticles increase the dislocation density and also help to pin the dislocation movement. Better residual stress stability under thermal annealing can be obtained by better dislocation movement stabilization, which is …
Wasco Environmental Chamber System Manifold, Steve Mark Yatco
Wasco Environmental Chamber System Manifold, Steve Mark Yatco
Industrial and Manufacturing Engineering
This report details the process of designing and producing a manifold that connects ultra-high purity (UHP) pressure and vacuum switches to an air supply so that the parts may be tested in an environmental chamber. Using the DMAIC (define, measure, analyze, improve, and control) methodology of problem solving, progress on the project includes thorough research about the problem, preliminary design solutions, iterative prototyping, and testing specific functionalities. Manufacturing engineering topics of tooling, fixturing, metrology, quality, and machining with manual and computer numerical control (CNC) varieties of both mills and lathes are applied during the course of the project. The report …