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Articles 4381 - 4410 of 4591
Full-Text Articles in Engineering
Fluidized Bed Classroom Demonstration Unit, Theresa Chapa
Fluidized Bed Classroom Demonstration Unit, Theresa Chapa
Williams Honors College, Honors Research Projects
Fluid and Thermal Operations is a 4th year chemical engineering course at the University of Akron designed to introduce undergraduate students to the engineering and mathematical concepts behind the operation of a fluidized bed. The purpose of this honors project is to design and manufacture an inexpensive and portable unit that can be used in the classroom to visually demonstrate three functions of a fluidized bed to students. The fluidized bed is manufactured from items that can be purchased from a department or hardware store, is capable of being transported by a single person to and from a classroom and …
Carbon Fiber Racing Wheel, Megan Sanok, Melissa Furdak, Sydney Schipani
Carbon Fiber Racing Wheel, Megan Sanok, Melissa Furdak, Sydney Schipani
Williams Honors College, Honors Research Projects
Industry today thrives off of competition; everybody wants their product to be the best. Across almost every field of manufacturing and design, there is a pattern of factors that companies strive for when producing their specialized products. The most effective companies can create a commodity that is relatively inexpensive, easy to manufacture, and has the ability to meet high standards. As engineers, it is ingrained in us that there is always room for improvement, and that we have been given the tools to make it happen.
When evaluating what needed to be improved in our daily lives, the SAE Zips …
The Smartbobber, Zachary Pyle, Nick Spoutz, Zachary Hutson, Ryan Pascal
The Smartbobber, Zachary Pyle, Nick Spoutz, Zachary Hutson, Ryan Pascal
Williams Honors College, Honors Research Projects
In short, the fishing bobber connects to a smartphone app (also designed by members on the team) to notify the user of fish bite data via Bluetooth connection. Additionally, the smartBobber is able to set the hook on fish autonomously and alert the user when it does so. This is possible by the use of a linear solenoid that is spring loaded. Circuitry on the bobber detects the pull distance on the plunger of the solenoid and transmits this data to the user in real time. Once the solenoid has passed a certain pull threshold, the solenoid completes a 12V …
Effects Of Hofmeister Ions On Transition Temperature Of Two Thermo-Responsive Polymers, Joshua Moser
Effects Of Hofmeister Ions On Transition Temperature Of Two Thermo-Responsive Polymers, Joshua Moser
Williams Honors College, Honors Research Projects
It was hypothesized that through the use of Hofmeister Ions, the lower critical solution temperature (LCST) of poly(vinyl methyl ether) (PVME) and poly(ethylene glycol)- poly(N-isopropylacrylamide) (PEG-b-pNIPAAm) block-copolymer could be controlled. Through literature searches and small lab experiments, our team found that there may be a connection between Hofmeister effects and phase transition of a thermo-responsive polymer. To try and prove this, the lab team decided to take four cations (Mg2+,Na+, Cs+, K+) in solution with the thermo-responsive polymers and compared their LCST to solutions of the thermo-responsive polymer in de-ionized …
Safe Pass, Alycia Riese, Julia Hariharan, Greg Synek, Jonathan Hall
Safe Pass, Alycia Riese, Julia Hariharan, Greg Synek, Jonathan Hall
Williams Honors College, Honors Research Projects
The purpose of this project is to design a sensor to be mounted on Class IV and higher vehicles to detect on-coming traffic. If traffic has been detected, the system is to warn drivers behind the stopped vehicle that passing is unsafe. The vehicle detection is to be implemented using a LiDAR detection method along with signal processing. A wireless transceiver is to transmit from the front radar module to the rear warning indicator module when the conditions are unsafe for passing. The project goals are to increase road safety and maintain traffic flow. The report details the challenges due …
Wheelchair Modification, Taylor Verba, Stephen Conklin, Nolyn Martz, Kenneth Hutson, William Rasper
Wheelchair Modification, Taylor Verba, Stephen Conklin, Nolyn Martz, Kenneth Hutson, William Rasper
Williams Honors College, Honors Research Projects
This document outlines the design process for a wheelchair modification. This wheelchair modification is the Senior Capstone Project for five undergraduate students studying Biomedical Engineering at The University of Akron, Team 14. The team was directed to compose a team name, which was chosen to be EnGenious Design Solutions (EDS). The project was provided by Dr. James Keszenheimer who is a professor at The University of Akron. This document focuses on the project results as well as business conclusions.
Power Wheelchair Canopy, Mohamed F. Battah, Joshua D. Brown, Dujuan J. Mcclendon, Gavin M. Francisco
Power Wheelchair Canopy, Mohamed F. Battah, Joshua D. Brown, Dujuan J. Mcclendon, Gavin M. Francisco
Williams Honors College, Honors Research Projects
Some power wheelchair users can not drive and independently hold an umbrella at the time because they do not have much upper body strength. Therefore, users are unprotected from the rain and are getting soaking wet. One of the members of this group is in a wheelchair and faces this problem. He has previously searched for something to protect him from rain, but could not found something he could independently use. What users need is a powered umbrella that attaches to their power wheelchair. There is no such umbrella available in the market. In this project, the solution to this …
Stabilization Of Dredged Materials In Ohio: An Investigation Of Mechanical, Chemical And Biological Dewatering Techniques, Erika Howard
Stabilization Of Dredged Materials In Ohio: An Investigation Of Mechanical, Chemical And Biological Dewatering Techniques, Erika Howard
Williams Honors College, Honors Research Projects
Each year, materials are excavated from oceans and lakes in order to keep the waterways open so that ships can safely pass through. These excavated, or dredged, materials are then discarded, usually being returned to the body of water from which they were removed. Beginning in 2020, the Ohio Environmental Protection Agency (OEPA) will no longer allow this to occur. Therefore, the purpose of this project is to investigate beneficial uses for dredged materials in Lake Erie, and to address the best management practices for dewatering these materials, as set forth in the Lake Erie Protection and Restoration Plan created …
Exoskeleton Leg Brace, Aaron Indermuhle, Magomed Kasumov, Cevat Bagcioglu, Lucas Battaglia
Exoskeleton Leg Brace, Aaron Indermuhle, Magomed Kasumov, Cevat Bagcioglu, Lucas Battaglia
Williams Honors College, Honors Research Projects
This report details the design process of a lower limb exoskeleton leg brace for elderly people with walking disabilities or others with disabilities that limit mobility. While there are other similar products on the market, the general design can be improved and these improvements have been implemented into the design presented within. Among these improvements are progress in efficiency, weight, user comfort, and cost. The results of the study are the design of a novel leg brace that improves on existing designs in each of these areas.
Our design solution incorporates the use of a single leg brace with no …
Development And Exploration Of A Z-Shaped Foot And Ankle Internal Fixation Plate, Rhaz Shaghaghi Paul, Ian Hames, Sean Rich
Development And Exploration Of A Z-Shaped Foot And Ankle Internal Fixation Plate, Rhaz Shaghaghi Paul, Ian Hames, Sean Rich
Williams Honors College, Honors Research Projects
This paper will detail the design process of developing a Z-shaped foot and ankle internal fixation plating system. Group 6: Plates for the Sole was made up of 5 team members, who worked together to accommodate their client’s request to complete a biomechanical analysis of a Z-Plate design and a construct a prototype. The Z-Plate’s purpose is to provide podiatrists with a new solution that can fit nicely on the small, irregular bones of the foot, while also remaining strong enough to withstand the forces and torques of the foot.
Reactive Archey Target Design Team "Mimic", Brandon Croyle, Jacob Boss, David Rodgers, Austin Wivell
Reactive Archey Target Design Team "Mimic", Brandon Croyle, Jacob Boss, David Rodgers, Austin Wivell
Williams Honors College, Honors Research Projects
This design project will aim to provide archery hunters with a platform to simulate shooting at string jumping deer. String jumping refers to a spooked deer hearing the snap of a bow string and instintivly ducking up to ten inches. This often results in wounded or missed deer. We will design and build a control system that uses the sound of a bow string as a trigger to operate a mechanical target system. A sound sensor will mimic a deer’s hearing in close range hunting and then send a signal to the mechanical system to replicate the dropping motion of …
Towards Multiple Model Approach To Bridge Deterioration, Jin A. Collins
Towards Multiple Model Approach To Bridge Deterioration, Jin A. Collins
Open Access Theses & Dissertations
The Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA) marked the start of a new era in transportation in the United States. ISTEA required transportation agencies to take a proactive approach to planning and management of their assets. This included requirements for managing pavement, bridges, safety, congestion, public transportation, and intermodal systems. For horizontal transportation assets (i.e., bridges and pavement), deterioration modeling is an essential tool (Yanev and Chen 1993). Since ISTEA, Bridge Management Systems (BMS) have been utilized to inform decision-making regarding bridge projects such as maintenance, rehabilitation, and replacement (MR&R) under financial limitations (Agrawal, Kawaguchi, and Chen 2010). …
Assessment Of Point Of Use (Pou) Systems For Reducing Health Risks Associated With Drinking Water Along The U.S.-Mexico Colonias In The Paso Del Norte Region, Varinia Viridiana Felix Parra
Assessment Of Point Of Use (Pou) Systems For Reducing Health Risks Associated With Drinking Water Along The U.S.-Mexico Colonias In The Paso Del Norte Region, Varinia Viridiana Felix Parra
Open Access Theses & Dissertations
In the Paso del Norte Region along the U.S. Mexico Border, there are more than 5,000 families living in impoverished communities known as colonias that lack access to basic infrastructure services such as a public water system. These depend on hauling trucks that deliver water into their storage tanks. Water storage practices by colonia residents on both sides of the border pose an enormous risk for waterborne disease outbreaks and heavy metal contamination because the water quality can decrease rapidly due to volatilization of the residual chlorine, intrusion of rainfall and air-laden dust. Since connection to centralized water treatment and …
Conductivity Modulation In Strained 2d Transition- Metal- Dichalcogenides Via Micro- Electro- Mechanical Actuation, Aldo Ivan Vidaña
Conductivity Modulation In Strained 2d Transition- Metal- Dichalcogenides Via Micro- Electro- Mechanical Actuation, Aldo Ivan Vidaña
Open Access Theses & Dissertations
In this thesis, strain-induced conductivity modulation in bi-layer molybdenum disulfide (MoS2) flakes is experimentally investigated and modeled. Uniaxial tensile strain in the MoS2 flakes is achieved using a micro-electro-mechanical (MEM) actuator. Conductivity ratios up to 400 are demonstrated. Theoretical predictions of conductivity versus applied voltage in the MEMS-MoS2 device match experimental data reasonably well using only the effective width of the TMDC flakes as the sole fitting parameter. The amount of strain induced in the MoS2 flakes was determined to be as high as 2.7% for one flake using the model fitted to the experiment data. The switching energy required …
Impact Of Temperature And Screw Speed On Material Meso-Structure And Tensile Strength In Large Area Pellet-Fed Additive Manufacturing, Xavier Jimenez Guzman
Impact Of Temperature And Screw Speed On Material Meso-Structure And Tensile Strength In Large Area Pellet-Fed Additive Manufacturing, Xavier Jimenez Guzman
Open Access Theses & Dissertations
Evolution in additive manufacturing, specifically in material extrusion, has resulted in large-scale machines capable of extruding thermoplastic-matrix composite materials in higher volumes to fabricate products for large-scale applications. As with small- and medium-scale material extrusion, the properties of the final product often correlate directly with the bevy of print parameters employed. The current research was performed to evaluate the effects of the screw speed and temperature on an ABS 20%wt. carbon fiber thermoplastic processed on a Big Area Additive Manufacturing (BAAM, Cincinnati Inc) machine. Five screw speeds (50, 150, 250, 350 and 400 rpm) and three extruder temperature profiles were …
Development And Implementation Of The Triac Data Acquisition And Control System, Raymundo Mendivil Rojo
Development And Implementation Of The Triac Data Acquisition And Control System, Raymundo Mendivil Rojo
Open Access Theses & Dissertations
The Technology Research and Innovation Acceleration Park (tRIAC) located at Fabens, Texas, was established for the ongoing development and testing of the miro center for Space Exploration and Technology Researchs (cSETRs) liquid methane and liquid oxygen rocket engines. These engines range from a 5 lbf Reaction Control Engine (RCE) to the 500 lbf and 2000 lbf Centennial Restartable Oxygen Methane Engines, called CROME and CROME-X respectively. Alongside their development, a comprehensive control system was built in the Modular Instrumentation and Control Interface Trailer (MICIT) and is equipped with National Instruments LabVIEW software and hardware. The LabVIEW code is based off …
Center Lift Trailer Support Structure, Carson Corle, Anthony M. Hayes, Bryan A. Truax
Center Lift Trailer Support Structure, Carson Corle, Anthony M. Hayes, Bryan A. Truax
Williams Honors College, Honors Research Projects
Center lift pontoon trailers have a high center of gravity, therefore have the potential for the pontoon and trailer to tip while cornering. There is need for a component to stabilize the pontoon on the trailer while towing. Different concepts of a support system were sketched to determine the best option. The characteristics that were deemed important for the support system were narrowed down to determine the best concept and the connections of the best design were sketched in greater detail. The forces that the support system would have to withstand to stabilize the pontoon on the trailer were calculated. …
Artificial Intelligence In Wet Weather Infrastructure, Matt Hammerstein
Artificial Intelligence In Wet Weather Infrastructure, Matt Hammerstein
Williams Honors College, Honors Research Projects
Effective management of runoff from rain and snowmelt is critical as increased water flows can negatively affect efficiency and reliability at treatment facilities, as well as potentially damage property or the natural environment. Implementation of artificial intelligence for real-time decision making and support in wet weather infrastructure is a recent technological development; as such, a problem has emerged: experience and knowledge of best practices for successful implementation is limited. Artificial intelligence is being employed to inform operational decisions that are intended to improve the efficiency and reliability of physical wet weather infrastructure. The goal of municipalities and utilities in utilizing …
Fluid Power Vehicle Competition, Madison Graham, Wayne Ritchie, Emily Dicks, Ariana Cupello
Fluid Power Vehicle Competition, Madison Graham, Wayne Ritchie, Emily Dicks, Ariana Cupello
Williams Honors College, Honors Research Projects
Our senior design project for the Honors College and the Department of Mechanical Engineering was to design a fluid powered vehicle. Our design was tested in an official capacity against other universities’ vehicles at the Fluid Powered Vehicle Challenge hosted and funded by the National Fluid Power Association (NFPA) and its industry partners. This competition had six different evaluations for our vehicle design; three race events, midway presentation, final presentation, and safety inspection. The three different race events were the sprint race, the efficiency race, and the endurance race. The sprint race was a 475 feet speed test, the efficiency …
Smart Parking Deck, Ryne Turner, Matthew Mcdade, Julie Aichinger, Laveréna Wienclaw
Smart Parking Deck, Ryne Turner, Matthew Mcdade, Julie Aichinger, Laveréna Wienclaw
Williams Honors College, Honors Research Projects
The Smart Parking Deck employs elementary circuit design elements and mobile application development. Each device module uses laser proximity sensors to check the availability of an individual parking space and a Zigbee unit to communicate with the adjacent device module. The modules are connected to a network hub that manages all of the incoming and outgoing parking data. This data is displayed on the mobile application. The system is easily manageable and energy efficient, significantly decreasing the costs associated with other smart parking systems on the market. This system is aimed at decreasing commute time for students by allowing them …
Artificial Intelligence Of Stormwater Operations, Eric Bednar
Artificial Intelligence Of Stormwater Operations, Eric Bednar
Williams Honors College, Honors Research Projects
The current infrastructure in our country will not be able to adequately support the growing demands of an exponentially increasing population. A rise in population contributes to a greater service demand necessary to treat sanitary sewer waste which in many cases contributes to the flow of combined sewers. When it comes to managing these combined sewers, rain and the snowmelt caused from climate changes are major factors that need to be addressed. Some water treatment facilities do not have the ability to treat the capacities or peak flows that a system experiences, resulting in combined sewer overflows which are both …
Baja Rack And Pinion, Devin Jackson
Baja Rack And Pinion, Devin Jackson
Williams Honors College, Honors Research Projects
Our senior design team chose to team up with The University of Akron’s SAE Zips Baja Team. The Zips Baja Team races off-road vehicles that they build every year. The team is trying to optimize and improve several sub categories for the 2019 car such as steering, drivetrain and suspension. Our design team met with a couple of the captains on the Zips Baja Team and were given a few choices of what sub category we could focus on for our project. We decided to take on the task of improving the vehicle steering rack and pinion gear system. The …
Laser Ablation Of Aluminum, Erika Nosal, Zachary Rahe, Arthur Pamboukis
Laser Ablation Of Aluminum, Erika Nosal, Zachary Rahe, Arthur Pamboukis
Williams Honors College, Honors Research Projects
The laser ablation of metal carries relevance in a variety of engineering industries. This includes, but is not limited to, processes such as micromachining, or implementation on aircraft weaponry. The latter application is the reasoning for why aluminum is the specific metal in consideration, as it is commonly used for the construction of aircraft components.
The scope of this project was to optimize the energy dispersed through laser ablation on aluminum by mathematical modeling. The transient conduction process in the aluminum was modeled using a 2-dimensional cylindrical coordinate system in both MATLAB and ANSYS/Fluent. These models were adopted to simulate …
Generator Design: A Study Of Optimized Airflow, Rachel Wattleworth
Generator Design: A Study Of Optimized Airflow, Rachel Wattleworth
Williams Honors College, Honors Research Projects
The core goal of this project was to prototype, test, and evaluate a new type of fan for the Safran Electrical & Power air-cooled generators. The idea of a new fan being made for these two generators arose when they were not adhering to design requirements. A base mixed-flow fan was created to test on multiple generators. Upon creating a prototype, it will be tested to prove if it can increase the air flow, decrease temperatures, and increase power and life of the machines. They all proved to be successful and achieve the main objectives for this project. Data such …
Artificial Intelligence In Wastewater Treatment Facilities: Implementing Practical New Technologies For The End User, Jordan Spano
Artificial Intelligence In Wastewater Treatment Facilities: Implementing Practical New Technologies For The End User, Jordan Spano
Williams Honors College, Honors Research Projects
Design phase operator input can prove useful; however, it is not essential in every application, as Akron’s treatment plant implemented AI to increase treatment capacity without design-phase operator input. They implemented a system flight simulator, a few hours training, and have communicated with the designer to make system tweaks as needed. In larger applications, the owner may benefit greatly by incorporating design input from operational staff. Those representing a municipality as a project owner for a treatment plant upgrade should always maintain an active role in the design of smart water infrastructure. They must keep the operators in mind when …
Intrinsic Variations In Geometric Properties Of Nonlinear Equivalent Strut Models For Infill-Rc Frames, Bruna Kirch Nienkotter Rocha
Intrinsic Variations In Geometric Properties Of Nonlinear Equivalent Strut Models For Infill-Rc Frames, Bruna Kirch Nienkotter Rocha
Theses: Doctorates and Masters
Reinforced concrete frames infilled with unreinforced masonry are commonly used in structures worldwide. The interaction between the frame and the infill panel is usually ignored in engineering practice, and the masonry infill is not considered as a structural element. However, observations made after the occurrence of strong earthquakes have shown that the bare frame and infill-frame behave differently when subjected to in-plane lateral loads. Extensive research has been conducted on the behaviour of infill-frames when laterally loaded. This research focuses on the analysis of infill-frames using the equivalent strut modelling method, whereby an infill-frame is simplified, and the infill panel …
Wettability Of Quartz Surfaces Under Carbon Dioxide Geo-Sequestration Conditions. A Theoretical Study, Aleksandr Abramov
Wettability Of Quartz Surfaces Under Carbon Dioxide Geo-Sequestration Conditions. A Theoretical Study, Aleksandr Abramov
Theses: Doctorates and Masters
The wettability of rocks under reservoir conditions is important to ensure and secure long term underground storage of carbon dioxide. The composition of those rocks vary significantly and are influenced by the fact that quartz is the second most abundant mineral in the earth's continental crust. Thus, the CO2 wettability of quartz dominates the overall CO2 trapping performance of storage and cap rocks. If depleted oil or gas reservoirs are used for storage of CO2 quartz surfaces of rocks in reservoirs which have been previously exposed to hydrocarbons might be covered with chemisorpt hydrocarbon molecules. The CO2 wettability of these …
Social Impacts Of Climate Change And Occupational Heat Stress And Adaptation Strategies Of Mining Workers In Ghana, Victor Fannam Nunfam
Social Impacts Of Climate Change And Occupational Heat Stress And Adaptation Strategies Of Mining Workers In Ghana, Victor Fannam Nunfam
Theses: Doctorates and Masters
Excessive heat exposure due to rising temperatures associated with climate change adversely affects workers’ health, safety, productivity, and psychosocial well-being in occupational settings. In the hot and tropical regions of developing countries, long hours of physically demanding work, coupled with inadequate adaptation policies to climate change, increases the occurrence of heat-related illnesses and injuries, and contributes to the loss of productive capacity, poor decision making, and other negative effects on the social well-being of workers.
Based on the theories of social impact assessment, risk assessment, adaptation and resilience planning, this study assesses the social impacts of climate change and occupational …
The Effect Of Behavioral Traits And Background On Engineering Students’ Decision-Making Process Compared To Business Students, Joe Scott
Williams Honors College, Honors Research Projects
This paper looks to narrow down the reasons that students undertake new credentials, specifically in sales fields. With a focus on character traits and upbringing, the goal is to ensure that there is a better understanding of the reasons that people undertake these credentials. The different benefits of credentials will be analyzed to determine the most influential reason that people would be willing to move forward. The combination of these factors will be used to provide recommendations of the best way to reach and influence the decision of the engineering students.
The Relative Contribution Of Fixation Features, Activity, And Tibiofemoral Conformity On Initial Stability Of Cementless Tibial Trays, James Sullivan Deacy
The Relative Contribution Of Fixation Features, Activity, And Tibiofemoral Conformity On Initial Stability Of Cementless Tibial Trays, James Sullivan Deacy
Electronic Theses and Dissertations
Initial stability of cementless total knee replacements (TKR) is critical to implant success as excessive motion between the bone and implant prevents bony ingrowth that is critical to the long-term survivability of cementless implants. Prior studies have shown that excessive micromotion causes fibrous tissue growth instead of beneficial bony growth. There are many factors that influence initial stability including the design of the tibial tray and the tibiofemoral articulations. Understanding the impacts of these design features on micromotion between the bone and implants is crucial to improving the performance of cementless TKR. Prior studies only tested for the effect of …