Industry 4.0 Remanufacturing: A Novel Approach Towards Smart Remanufacturing,
2022
Missouri University of Science and Technology
Industry 4.0 Remanufacturing: A Novel Approach Towards Smart Remanufacturing, Prashansa Ragampeta
Masters Theses
“Smart remanufacturing has become more popular in recent years as a result of its multiple benefits and the growing need for society to encourage a circular economy that leads to sustainability. One of the most common end-of-life (EoL) choices that can lead to a circular economy is remanufacturing. As a result, at the end-of-life stage of a product, it is critical to prioritize this choice over other accessible options because it is the only recovery option that retains the same quality as a new product. This work focuses on the numerous technologies that can aid in the improvement of smart …
Effects Of Additive Manufacturing Techniques On The Magnetocaloric Properties And Chemical Stability Of Lafexcoysi13-X-Y Alloys,
2022
Virginia Commonwealth University
Effects Of Additive Manufacturing Techniques On The Magnetocaloric Properties And Chemical Stability Of Lafexcoysi13-X-Y Alloys, Binyam Wodajo
Theses and Dissertations
Additive manufacturing (AM) is an emerging process to fabricate net shape, intricate, engineering components with minimal material waste; however, traditionally it has been largely applied to structural materials. AM of functional materials, such as magnetic materials, has received much less attention and the field is still in its infancy. To date, AM of magnetocaloric regenerators for magnetic refrigeration (an energy-efficient alternative to the conventional vapor-compression cooling technology), remains a challenge. There are several magnetic refrigerator device designs in existence today that are predicted to be highly energy-efficient, on condition that suitable working materials can be developed. This challenge in manufacturing …
A Convolutional Neural Network (Cnn) For Defect Detection Of Additively Manufactured Parts,
2022
Missouri University of Science and Technology
A Convolutional Neural Network (Cnn) For Defect Detection Of Additively Manufactured Parts, Musarrat Farzana Rahman
Masters Theses
“Additive manufacturing (AM) is a layer-by-layer deposition process to fabricate parts with complex geometries. The formation of defects within AM components is a major concern for critical structural and cyclic loading applications. Understanding the mechanisms of defect formation and identifying the defects play an important role in improving the product lifecycle. The convolutional neural network (CNN) has been demonstrated to be an effective deep learning tool for automated detection of defects for both conventional and AM processes. A network with optimized parameters including proper data processing and sampling can improve the performance of the architecture. In this study, for the …
Effects Of Varied Oxygen Levels, Laser Powers, And Scanning Speeds On Manufactured Components By Laser-Based Powder Bed Fusion,
2022
Georgia Southern University
Effects Of Varied Oxygen Levels, Laser Powers, And Scanning Speeds On Manufactured Components By Laser-Based Powder Bed Fusion, Amelia Mcnamee
Honors College Theses
This project addresses the effects of oxygen concentration, laser power, and scanning speed on the melt pool geometry of laser-based powder bed fusion (L-PBF) additively manufactured components. A parametric analysis using the substrate alone was conducted to determine a range of desirable laser powers and scanning speeds. The parameter with the more significant effect will be decided upon based on the depth-to-width ratios (D/W) of the resultant laser weld bead. A range of oxygen levels and scan speeds was selected for the next phase. These samples were then be analyzed for depth-to-width ratios. It was expected that higher oxygen concentrations …
Energy And Economic Modeling Of Stillage Dewatering Processes In Kentucky Bourbon Distilleries,
2022
University of Kentucky
Energy And Economic Modeling Of Stillage Dewatering Processes In Kentucky Bourbon Distilleries, William Brennan
Theses and Dissertations--Mechanical Engineering
Stillage is a byproduct of alcohol distillation and must be managed in all distilleries to sustain operations. In the United States, fuel ethanol plants typically convert all stillage into Dried Distillers’ Grains with Solubles (DDGS). This process and its variations are well known. Typical stillage management approaches are not well known, however, for the Kentucky bourbon industry. A survey of stillage management approaches in operational bourbon distilleries was conducted. Process modeling was performed to evaluate the energy and economic considerations of the available stillage dewatering methods for a 7 Million Original Proof Gallon (MMOPG) distillery. Monte Carlo simulations were performed …
In-Situ Characterization Of Surface Quality In Γ-Tial Aerospace Alloy Machining,
2022
University of Kentucky
In-Situ Characterization Of Surface Quality In Γ-Tial Aerospace Alloy Machining, David Adeniji
Theses and Dissertations--Mechanical Engineering
The functional performance of critical aerospace components such as low-pressure turbine blades is highly dependent on both the material property and machining induced surface integrity. Many resources have been invested in developing novel metallic, ceramic, and composite materials, such as gamma-titanium aluminide (γ-TiAl), capable of improved product and process performance. However, while γ-TiAl is known for its excellent performance in high-temperature operating environments, it lacks the manufacturing science necessary to process them efficiently under manufacturing-specific thermomechanical regimes. Current finish machining efforts have resulted in poor surface integrity of the machined component with defects such as surface cracks, …
In-Situ Characterization Of Burr Formation In Finish Machining Of Inconel 718,
2022
University of Kentucky
In-Situ Characterization Of Burr Formation In Finish Machining Of Inconel 718, Hamzah M. Zannoun
Theses and Dissertations--Mechanical Engineering
One of the undesirable byproducts that occur during the machining process is the development of burrs, which are defined as rough excess material that forms around the geometric discontinuities of a part. Burrs are especially problematic because they have negative impacts across the triple bottom line: economic, environmental, societal. For one, they are expensive to remove because the deburring process is entirely manual and requires skill. Further, burr material is typically discarded which is adding to the already mounting waste generated from machining such as in coolant and chip disposal. Lastly, there are many societal implications, such as operator injury …
Closed Loop Recycling Of Low Friction Polymers In Fused Granule Fabrication Additive Manufacturing Processes,
2022
Brigham Young University
Closed Loop Recycling Of Low Friction Polymers In Fused Granule Fabrication Additive Manufacturing Processes, Neil Thompson, Jason Weaver
Faculty Publications
Plastic waste is a critical worldwide problem that impacts additive manufacturing (AM). Extensive research has explored how plastic waste in AM can be reduced by recycling prints into new filament, with varying success. An alternative to filament-based extrusion is “fused granule fabrication” (FGF), which extrudes from pellets or granules. This method is often used for large area additive manufacturing (LAAM) of polymers. This paper expands upon the knowledge base from previous research on LAAM and examines the extent to which PETG can be recycled and reprinted through the same FGF tool without significant loss to its material properties. The metric …
Effects Of Titanium And Cerium Addition On Grain Size And Mechanical Properties Of Ductile Iron Castings,
2022
Georgia Southern University
Effects Of Titanium And Cerium Addition On Grain Size And Mechanical Properties Of Ductile Iron Castings, Shelton F. Fowler Iv
Electronic Theses and Dissertations
According to the Hall-Petch equation, the refinement of grains in metals increases the yield strength of the material. Austenite grain size influences the fineness of microstructural constituents in the ferrous alloys. It is well studied that cerium and titanium refine the austenite in steels and some gray irons, but no studies have been done to systematically explore the effects of cerium and titanium additions on austenite in ductile iron. This study sought to determine the effects of selected levels of these elements on the grain size within ductile iron. A hypoeutectic iron was chosen for testing as the proeutectic phase …
Sintering Of 3-D Printed Metals,
2022
The University of Akron
Sintering Of 3-D Printed Metals, Adam Shuppe, John Griffiths
Williams Honors College, Honors Research Projects
There is a 3-D printer which prints metals such as 17-4 PH. In this project, we will learn how to use the machine to print samples, create a sintering graph for the material, and compare the properties with materials sintered using the machine. We will try to get as close as possible to the properties of the samples sintered using the machine. There will be a lot of samples made and tested, and we will learn how to use a testing machine and all other testing equipment in the department.
Npt Test Machine,
2022
The University of Akron
Npt Test Machine, Lauren Cash
Williams Honors College, Honors Research Projects
Located at the Research facility at The Goodyear Tire & Rubber Company, the Non-Pneumatic Tire (NPT) Program is currently in the prototype phase. However, airless tire structures are quickly gaining popularity as an alternative to a traditional pneumatic tire. The NPT Test Machine is a measurement fixture that will perform a series of evaluations to determine the stiffness of an NPT; this will allow the program to expand and evolve more rapidly into a manufacturing phase. In this Senior Design Project, a complete test solution was researched, designed, built, programmed, and validated so that data can be collected, and tires …
Grinding And Super-Finishing Test Machine Project,
2022
The University of Akron
Grinding And Super-Finishing Test Machine Project, Michael Simon
Williams Honors College, Honors Research Projects
A research project in The University of Akron to study grinding and super-finishing of silicon nitride ceramic was initiated by Dr. Siamak Farhad and sponsored by the Timken Company, with the assistance of undergraduate students Michael Simon, Ryan Hosso and Mathew Rozmajzl. The study required analysis of forces and scratches generated during grinding processes of silicon nitride samples. A testing assembly was designed and constructed to record the forces generated during grinding and super-finishing of silicon nitride samples in a computer-numerical-control machine. Silicon nitride samples were subjected to desired grinding and super-finishing operations and all forces generated during the process …
Human Powered Vehicle Team Challenge,
2022
The University of Akron
Human Powered Vehicle Team Challenge, Sydney Nedlik, Spencer Brodie, Maria Griffin, William Schell, Ryan Serraglio
Williams Honors College, Honors Research Projects
Design and build a Human Powered Vehicle in a team of five. Compete at the ASME HPVC competition in March of 2022. Re-establish the Human Powered Vehicle Team at the University of Akron.
Quickcut Waterjet Cutter,
2022
The University of Akron
Quickcut Waterjet Cutter, Kennedy Dunn, Jacob Storrow, Benjamin Laughrey
Williams Honors College, Honors Research Projects
The QuickCut Waterjet Cutter was created in 2019 as a senior design project. This is the third iteration of the waterjet cutter. The goal of this project was to create an operable CNC waterjet cutter that is able to cut 1/16” tensile specimens consisting of nonferrous metal or plastic. This machine will be utilized in the Manufacturing Laboratory at the University of Akron to provide education to interested students on the waterjet cutting process, how it operates, and industrial application of the technology. Waterjet cutting is a subtractive manufacturing process which is recognized for its specialized applications such as cutting …
Multi-Platform Suppressor Design Project,
2022
The University of Akron
Multi-Platform Suppressor Design Project, Wyatt A. Openshaw, Alex B. Chiples
Williams Honors College, Honors Research Projects
The Multi-Platform suppressor is a design that is meant to bridge the gap in the suppressor market by being compatible and configurable with both rifle and pistol platform firearms. In the specific design and prototype referenced in this report, the Multi-Platform suppressor was designed to be used with 9mm pistol and 5.56x45mm rifle calibers with safety, effectiveness, and practicality in mind. To achieve this, the suppressor is configurable, utilizing a Nielsen device in the pistol configuration and a solid mount adapter that replaces the Nielson device piston and spring while in the rifle configuration. This allows the suppressor to retain …
Dupont Seal Mold Assembly Machine,
2022
The University of Akron
Dupont Seal Mold Assembly Machine, Brett Biederman, Craig Hanchett, Matthew Chilton
Williams Honors College, Honors Research Projects
The Seal Assembly Machine is a custom-built device that is designed to seat a thin polymer part between two mating pieces of metal tooling. To meet the specifications of the sponsor, the Seal Assembly machine must perform its function more quickly and accurately than manual labor at the same task. At the time of compiling this report, the machine is not yet functional due to time constraints.
Ballistic Impact Mitigation Pad,
2022
The University of Akron
Ballistic Impact Mitigation Pad, Adam Pianalto, Nathan Mayer, Wyatt Smith, Nick Green, Douglas Wild
Williams Honors College, Honors Research Projects
In our senior design project we have decided to work under Dr. Jon Gerhardt on creating a gel pad to mitigate blunt force behind bulletproof vests. Extensive research on injury, materials, manufacturing methods, and NIJ standards was completed during this project. Through the use of advanced modeling software and additive manufacturing, we prototyped a functioning pad to test and compare to a pad that is currently available in today's market. The results proved to be very successful, but there are many areas to improve upon down the road.
Development Of Phase Change Thermal Storage Medium: Cooking With More Power And Versatility,
2022
Eastern Illinois University
Development Of Phase Change Thermal Storage Medium: Cooking With More Power And Versatility, Martin Osei
Masters Theses
With an Insulated Solar Electric Cooker (ISEC), a 100 W solar panel directly cooks food while providing 5W off-grid electricity access; but it cooks slowly. Storing the day’s energy with phase change thermal storage allows ISEC to cook more rapidly as well as cook after sunset. The ISEC is made by sticking a 3ohm resistive to an aluminum pot (inner phase change assembly PCA) where another cooking pot fits. The resistive heater is surrounded by a bigger pot (outer PCA) that contains the PCM and is tightly sealed. The solar panel is connected to the resistive heater with a thermal …
Workforce Development Strategies In Additive Manufacturing,
2022
Edmonds College
Workforce Development Strategies In Additive Manufacturing, Mel Cossette, Ismail Fidan, Gaffar Gailani, Angran Xiao
Publications and Research
Additive Manufacturing (AM), also known as 3D Printing (3DP), is one of the newest manufacturing technologies with growing utilization in our daily life. Parallel to this growth, new materials, machines, and specific processes are being developed to produce parts in better-finished quality, at lower cost, and with shorter production time. However, workforce education in this evolving field has not advanced at the same pace as the technology, lacking proven curriculums, high-quality/accredited degree programs, and specialized advanced degrees. In this paper, some best practices established by the authors are introduced. The list is far from exhaustive but is proven to be …
A Note From The Co-Editors,
2021
Purdue University
A Note From The Co-Editors, Jada C. Johnson
Ideas: Exhibit Catalog for the Honors College Visiting Scholars Series
An introduction to the fifth issue of the third volume of Ideas Magazine, concerning the thoughts, experience, and work of Dr. Marcelo J.S. de Lemos.
