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Articles 1 - 30 of 33
Full-Text Articles in Nuclear Engineering
A Simulation Study Of A Radiofrequency Localization System For Tracking Patient Motion In Radiotherapy, Mark Ostyn, Siyong Kim, Woon-Hong Yeo
A Simulation Study Of A Radiofrequency Localization System For Tracking Patient Motion In Radiotherapy, Mark Ostyn, Siyong Kim, Woon-Hong Yeo
Mechanical and Nuclear Engineering Publications
One of the most widely used tools in cancer treatment is external beam radiotherapy. However, the major risk involved in radiotherapy is excess radiation dose to healthy tissue, exacerbated by patient motion. Here, we present a simulation study of a potential radiofrequency (RF) localization system designed to track intrafraction motion (target motion during the radiation treatment). This system includes skin-wearable RF beacons and an external tracking system. We develop an analytical model for direction of arrival measurement with radio frequencies (GHz range) for use in a localization estimate. We use a Monte Carlo simulation to investigate the relationship between a …
Alternative Materials For Dental Restorations, Tyler Poole, Pierce Dunwoody, Adarsha Sapkota, Mario Rodriguez
Alternative Materials For Dental Restorations, Tyler Poole, Pierce Dunwoody, Adarsha Sapkota, Mario Rodriguez
Capstone Design Expo Posters
The senior design project ‘Alternative Materials and Methods for Dental Restoration’ has a purpose of addressing the unmet need or engineering problem related to dental restoration by determining the available manufacturing methods and materials as an alternative to ‘Intra-oral digital scanners’. The project deliverables for this project were the tooth crown prototypes with the tolerance within 50 microns. The CAD model for this tooth was tested for its strength, physical properties, and suitability. The prototypes were developed through an additive method, i.e., 3D printing. The constraints for this project were related to budget and printer. Buying a highly qualitative 3D …
Vcu Neuroguard: Multi-Person Radiation Shielding Device, David Bauserman, Abigail Haines, Laynold Pilson, Madelaine Simmons
Vcu Neuroguard: Multi-Person Radiation Shielding Device, David Bauserman, Abigail Haines, Laynold Pilson, Madelaine Simmons
Capstone Design Expo Posters
The objective of the VCU Neuroguard project was to design and build a device to shield all medical personnel in Operating Room-33, at MCV Hospital, from radiation during neurological procedures that utilize a Siemens Artis Zee biplane X-ray machine. The initial goal was to develop a fully working prototype but due to monetary reasons this goal was adjusted to a working prototype minus the radiation shielding materials.
There were many requirements for the VCU Neuroguard set forth by the customer and by the team, including the ability to shield all the medical staff in the room, the ability for them …
Improved Way To Affix Iv Components To Gurneys From Operating Tables, Corey Gilbert, Braulio Rosales, Jason Warren
Improved Way To Affix Iv Components To Gurneys From Operating Tables, Corey Gilbert, Braulio Rosales, Jason Warren
Capstone Design Expo Posters
The current issue in the process of transporting a patient from the operating room (OR) to the intensive care unit (ICU) is the risks involved with the IV stand being top-heavy due to two or three IV pumps weighing approximately 15 pounds each. This can lead to injury to the patient, or other personnel, if an instance occurred where the IV stand were to tip over. Having a single person to manage both the IV stand and gurney during transport can increase this risk.
To remedy these problems, the project team established the goals of developing a working prototype, testing …
Design And Optimization Of A Molten Metal Loop Driven By An Electromagnetic Pump, Eric Mallon, Miguel Bustamante Perez, Joseph Keegan
Design And Optimization Of A Molten Metal Loop Driven By An Electromagnetic Pump, Eric Mallon, Miguel Bustamante Perez, Joseph Keegan
Capstone Design Expo Posters
Liquid Metal Fast Reactor (LMFR) utilizing liquid metal as a coolant is still being considered for future nuclear energy. In this concept, transporting liquid metal still poses many challenges in engineering design and material detection and accountability. In this senior design project, the team has been exploring a design and optimization of a molten metal loop driven by an electromagnetic pump. Here, a manometer type solution was deemed the best method to achieve meaningful results. Transparent Pyrex tubing was selected for the manometers, as the visual column difference would indicate pressure differences. Tin was selected for the working fluid, and …
Emergency Glucagon Injection Device, John Corbett, Zachary Cullingsworth, Christopher Ducic, Ryan Meekins
Emergency Glucagon Injection Device, John Corbett, Zachary Cullingsworth, Christopher Ducic, Ryan Meekins
Capstone Design Expo Posters
Glucagon is a drug administered to people with diabetes that are experiencing a seizure due to low blood glucose levels. The current method of injecting glucagon during a hypoglycemic seizure is lengthy and complicated when time equates to minimizing the effects of an emergency situation. This project is student created and the result of the design team recognizing a serious problem and deciding to find a better solution. The goal of this project was to streamline this process. Several working prototypes were developed and evaluated before a final design was chosen. Safety, durability and usability were all considerable factors. The …
Thermo-Regulated Device For Extremities Affected By Raynaud’S Disease, Jessica L. Bishop, Nathaniel P. Kirby, T. Ryan Beaver, Alisa B. Sverdlov
Thermo-Regulated Device For Extremities Affected By Raynaud’S Disease, Jessica L. Bishop, Nathaniel P. Kirby, T. Ryan Beaver, Alisa B. Sverdlov
Capstone Design Expo Posters
Raynaud’s condition is a disease in which blood vessels in the extremities constrict in response to emotional stimuli and cold environments. This results in extreme discoloration and pain in the regions affected (Figure 1), and can cause permanent tissue damage. Although there is no current cure for this disease, there are several methods of pain mitigation including the use of drugs, gloves, avoiding exposure to cold weather, and using heating devices. However, these solutions are only temporary. Most gloves do not provide adequate insulation or have a short battery life.
This project is aimed at mediating the negative physiological effects …
Non-Destructive Testing Of Hardface Cladding, Hunter Andrews, Karson Clark, Jared O’Hara
Non-Destructive Testing Of Hardface Cladding, Hunter Andrews, Karson Clark, Jared O’Hara
Capstone Design Expo Posters
Valves, such as the ones shown in Figure 1 and Figure 2, are very common throughout Navy vessels in systems which transport various materials such as water, steam, and oil. Over their lifetime the valve Stellite seatings are rehabilitated by being ground down to create a smooth surface. If the seating surface is ground to a thickness lower than 3/32 in, the valve will be considered inoperable. It was necessary to design a portable device that can be used by Newport News Shipbuilding to measure the thickness of Stellite coatings on valve seating surfaces. A device that could be used …
Tapered Roller Bearing Accelerated Life Test Rig Design And Fabrication, Laith Naeem, Andrew Nguyen, Bryson Sin, Ramon Vargas
Tapered Roller Bearing Accelerated Life Test Rig Design And Fabrication, Laith Naeem, Andrew Nguyen, Bryson Sin, Ramon Vargas
Capstone Design Expo Posters
L10 bearing fatigue life testing is a costly and prolonged process, as the bearing is characteristically designed for durability and reliability. Within the current testing methods, faulty materials still have the potential of passing the test. However, with this life test rig, the bearing will be tested to failure, thus providing an indicator for its predicted life span.
The purpose of this project is to optimize and construct a L10 life test rig for accelerated fatigue testing of the Association of American Railroad Class K, 6 ½ x 9-inch double-row tapered roller bearing to their maximum fatigue life …
Underhull Material Transport Rig: Aircraft Carrier Maintenance Processes, Hunter Alford, Christopher Brady, Michelle Runion, Spencer Trevisan
Underhull Material Transport Rig: Aircraft Carrier Maintenance Processes, Hunter Alford, Christopher Brady, Michelle Runion, Spencer Trevisan
Capstone Design Expo Posters
The clearance under a ship in the Newport News Shipbuilding dry dock is approximately 62 inches. As a result, workers are either crouched or hunched over as they carry materials and equipment underneath the ship to their work zone. This can cause physical strain on workers’ bodies, leading to safety and health problems. This design project solves the problem by creating a transport system that uses a cart suspended from two trolleys that ride on a track attached to the bottom of the hull.
A working prototype was built, demonstrated, and tested. This prototype cart maneuvered through a straight and …
Robotic Inspection Of Geometrically Complex Tank Systems, Andrew Casalenuovo, Andrew Rubio, Charles Hockett, Peter Donaldson
Robotic Inspection Of Geometrically Complex Tank Systems, Andrew Casalenuovo, Andrew Rubio, Charles Hockett, Peter Donaldson
Capstone Design Expo Posters
The goal of this project was to continue the development of a temporary rail system for a robotic tank inspection device. The tanks to be inspected are in a hazardous environment that is dangerous to work in and navigate. A remotely controlled robot could reduce the need for manual labor in the tanks to initial setup, final removal, and touch ups. Similar setups have been created for inspecting tanks, but they are permanent installations and are meant only for inspections.
The goal of the current phase of the project was to employ a new concept for supporting the rail system, …
Highway 66 Structural Foundation Redesign, Devyn Borum, Joshua Clarke, Lorenzo Dingcong, Korey Smith
Highway 66 Structural Foundation Redesign, Devyn Borum, Joshua Clarke, Lorenzo Dingcong, Korey Smith
Capstone Design Expo Posters
The primary project goal was to reduce the cost per unit of the structural foundation (sublane) of the Route 66 miniature bowling lane by 10%. Additional project goals were: 1) reducing the cubic volume for shipping, (2) reducing the lane assembly time, and 3) maintaining current 10 to 15-year product life. Ten sublane sections are used to assemble two lanes of a Route 66 unit. The project constraints included: 1) maintaining outside height, width and length of the sublanes, 2) load bearing strength greater than or close to the current design and 3) no significant change in manufacturing processes. After …
Friction And Wear Measurements In Automatic Transmission Clutch, Steffen Harm, Dabin Kim, Jean Paulo Mulles, Eric Stavitzski, Hoang Tran
Friction And Wear Measurements In Automatic Transmission Clutch, Steffen Harm, Dabin Kim, Jean Paulo Mulles, Eric Stavitzski, Hoang Tran
Capstone Design Expo Posters
In order to create alternate pathways to increase fuel efficiency, flexible ways to alter and test fluid properties are needed when transmission manufacturers change the operating conditions or components used in automatic transmissions. A prototype was fabricated to satisfy this need by reducing the cost, time of conducting tests while producing accurate results, and also increasing the amount of trials that can be conducted in a laboratory setting. The limitations of developing a new prototype are: safety, weight, ease of use, laboratory size, and establishing accurate results within the amount of time given. This project was approached using the Engineering …
3d Heart Model For Mapping Rf Ablation Sites, Danielle Corsino, Ashleigh Mims, Andrew Potter, Alejandro Rivera
3d Heart Model For Mapping Rf Ablation Sites, Danielle Corsino, Ashleigh Mims, Andrew Potter, Alejandro Rivera
Capstone Design Expo Posters
Electro-Cardiologists routinely insert radiofrequency probes into the heart and conduct targeted ablation procedures to correct irregular heartbeats. Current techniques are very experience and “touch” based, and require the novice cardiologist about 50 procedures to become proficient. There is a need for a functional heart model device that can be used to reduce the amount of procedures on human patients before cardiologist become proficient. Project constraints included limited software availability for segmenting accuracy, available 3D printing technology and materials, and cost to 3D print heart models due to the complex geometry. The team began with a CT scan, ITK SNAP and …
3d Printed Teeth: Anatomically Correct Primary Replicas, Anh Nguyen, Stefan Harris
3d Printed Teeth: Anatomically Correct Primary Replicas, Anh Nguyen, Stefan Harris
Capstone Design Expo Posters
The current method of molding teeth, especially primary teeth, cannot accurately reproduce internal tooth structures. Therefore, there is a need for primary teeth to be made anatomically accurate on-demand with the ability to customize a model for specific patients. This project aims that any tooth extracted digitally from a Dental Cone Beam computed tomography (CBCT) scan of a child's mouth can be 3D printed into an accurate replicate with which dental students can practice. Constraints include viable materials that can be printed by a 3D printer, represent tooth anatomy and provide desirable mechanical properties compatible with the dental drilling operation. …
Adjustable Pipe Hanger: Newport News Shipbuilding, Ryan Fitzgerald, Ahmad Othman, Emily Holland, Zinullah Ghaznawi
Adjustable Pipe Hanger: Newport News Shipbuilding, Ryan Fitzgerald, Ahmad Othman, Emily Holland, Zinullah Ghaznawi
Capstone Design Expo Posters
This senior design project is sponsored by Newport News Shipbuilding. The objective of this project is to design a pipe hanger system that could be installed during initial fabrication while still allowing adjustment when the pipe path deviates from the initial drawings. The design must be cheap and utilize already existing parts. One key constraint is to hold a load of 250 pounds and withstand a velocity between 100-120 inches per second. The original design created utilizes a C-channel track attached to the ceiling and a spring locking mechanism to provide flexibility. This final design eliminated the spring device with …
Super-Efficient Condiment And Detergent Storage Containers, Anurag Baral, Rehman Chaudry, Andree Cochran
Super-Efficient Condiment And Detergent Storage Containers, Anurag Baral, Rehman Chaudry, Andree Cochran
Capstone Design Expo Posters
(1) unmet need - engineering problem being addressed: Approximately fifteen percent of ketchup, detergent and shampoo still remain on the walls of storage containers. Due to this problem, billions of dollars are wasted annually. (2) project deliverables: Models are created to represent working prototypes that are more efficeint for the products. (3) constraints: Glass bottles are less expensive to produce, but are more expensive to transport. (4) approach: Ketchup, shampoo and detergent droplets were placed onto plastics to test which plastic best suited the products. Then, the plastics were coated with candlewax, car wax, beeswax, Alkyl Ketene Dimer (AKD) and …
Microstructured Thin Film Nitinol For A Neurovascular Flow-Diverter, Yanfei Chen, Connor Howe, Yongkuk Lee, Seongsik Cheon, Woon-Hong Yeo, Youngjae Chun
Microstructured Thin Film Nitinol For A Neurovascular Flow-Diverter, Yanfei Chen, Connor Howe, Yongkuk Lee, Seongsik Cheon, Woon-Hong Yeo, Youngjae Chun
Mechanical and Nuclear Engineering Publications
A cerebral aneurysm occurs as a result of a weakened blood vessel, which allows blood to flow into a sac or a ballooned section. Recent advancement shows that a new device, ‘flow-diverter’, can divert blood flow away from the aneurysm sac. People found that a flow-diverter based on thin film nitinol (TFN), works very effectively, however there are no studies proving the mechanical safety in irregular, curved blood vessels. Here, we study the mechanical behaviors and structural safety of a novel microstructured TFN membrane through the computational and experimental studies, which establish the fundamental aspects of stretching and bending mechanics …
Educational Nuclear Reactor Simulator, Kevin Jeunang, Koueni Tchamambe, Mutasem Albulushi, Malcolm Breckenridge
Educational Nuclear Reactor Simulator, Kevin Jeunang, Koueni Tchamambe, Mutasem Albulushi, Malcolm Breckenridge
Capstone Design Expo Posters
The VCU Reactor Simulator provides a solid technical and visual approach to simulating a commercial pressurized water nuclear power plant. The simulator provides several benefits for VCU including: a hands on learning instrument that can be used in nuclear engineering courses, an opportunity for students to gain experience in nuclear modeling and simulation, and a community outreach tool to expand the public’s knowledge of nuclear technology.
In the six years since its inception, the only prior major modification to the simulator was the replacement of in-house written LabVIEW coding as the calculation engine with the RETRAN- 3D code, a program …
Sustainability: Reusing Data Center Waste Heat, John Boushra, Kyle Duncan, Aleksandr Kogan, Giang Pham
Sustainability: Reusing Data Center Waste Heat, John Boushra, Kyle Duncan, Aleksandr Kogan, Giang Pham
Capstone Design Expo Posters
Data Centers are facilities used to house a large number of computer systems and their associated components, such as telecommunications and data storage systems. Nowadays many organizations depend on the reliable operation of their data centers for their day to day business operations. Data centers are designed with redundant and backup power supplies, redundant data communications connections, robust cybersecurity protocols and very strict environmental controls. The many computer systems held in a typical data center generate large heat loads that need to be continuously removed with high grade air conditioning systems. Anthem currently owns a large corporate data center in …
Measurement Of Rare Earth And Uranium Elements Using Laser-Induced Breakdown Spectroscopy (Libs) In An Aerosol System For Nuclear Safeguards Applications, Ammon N. Williams
Measurement Of Rare Earth And Uranium Elements Using Laser-Induced Breakdown Spectroscopy (Libs) In An Aerosol System For Nuclear Safeguards Applications, Ammon N. Williams
Theses and Dissertations
The primary objective of this research is to develop an applied technology and provide an assessment for remotely measuring and analyzing the real time or near real time concentrations of used nuclear fuel (UNF) elements in electrorefiners (ER). Here, Laser-Induced Breakdown Spectroscopy (LIBS) in UNF pyroprocessing facilities was investigated. LIBS is an elemental analysis method, which is based on the emission from plasma generated by focusing a laser beam into the medium. This technology has been reported to be applicable in solids, liquids (includes molten metals), and gases for detecting elements of special nuclear materials. The advantages of applying the …
An Injection And Mixing Element For Delivery And Monitoring Of Inhaled Nitric Oxide, Andrew R. Martin, Chris Jackson, Samuel Fromont, Chloe Pont, Ira M. Katz, Georges Caillobotte
An Injection And Mixing Element For Delivery And Monitoring Of Inhaled Nitric Oxide, Andrew R. Martin, Chris Jackson, Samuel Fromont, Chloe Pont, Ira M. Katz, Georges Caillobotte
Mechanical and Nuclear Engineering Publications
Background
Inhaled nitric oxide (NO) is a selective pulmonary vasodilator used primarily in the critical care setting for patients concurrently supported by invasive or noninvasive positive pressure ventilation. NO delivery devices interface with ventilator breathing circuits to inject NO in proportion with the flow of air/oxygen through the circuit, in order to maintain a constant, target concentration of inhaled NO.
Methods
In the present article, a NO injection and mixing element is presented. The device borrows from the design of static elements to promote rapid mixing of injected NO-containing gas with breathing circuit gases. Bench experiments are reported to demonstrate …
Unmanned Aerial Vehicle For Vertically Profiling Ultrafine Particle Distribution, Ahmed Almutawa, Ola Saadeh, Mudaher Alkhawajah, Grant Carey
Unmanned Aerial Vehicle For Vertically Profiling Ultrafine Particle Distribution, Ahmed Almutawa, Ola Saadeh, Mudaher Alkhawajah, Grant Carey
Capstone Design Expo Posters
Recent epidemiologic studies show that ultrafine particles (UFPs) may play a definitive role in development of pulmonary and cardiovascular diseases, as well as cancer related mortality. In order to support the growing interest in understanding the effects of UFPs on human health, Dr. Chen has developed a miniaturized electronic ultrafine particle sizing device, or mini-eUPS. This device utilizes many of the functions of equipment currently used in laboratory environments to test and measure UFP levels in aerosols, but has been miniaturized to maximize mobility and ease of use. The small size and weight of the device allow a unique ability …
Tracking Surgical Instruments, Akia Wells, Samuel Samvura, Brandon Santiago
Tracking Surgical Instruments, Akia Wells, Samuel Samvura, Brandon Santiago
Capstone Design Expo Posters
Surgical instruments and sponges are mistakenly left inside patients for more than a dozen times a day. Hospitalizations involving a lost instrument or sponge can average costing more than $60,000 for a hospital. The objective of this design project is to develop a simple, innovative tracking flow process that will better keep track of surgical instruments and sponges before and after surgeries. Using high temperature stickers with matrix barcode technology attached to the surgical instruments, the instruments will be easily scanned into a database to track when instruments are checked in and checked out. Before all instruments are used and …
Remote Control Aircraft, Thomas Gutema, Catherine Jones, Judy Liang, Kendall Moore
Remote Control Aircraft, Thomas Gutema, Catherine Jones, Judy Liang, Kendall Moore
Capstone Design Expo Posters
The purpose of the RC aircraft design was not to address a problem that has not been solved, but to redesign an aircraft with the intent to understand the practical applications of the building process. Our approach to completing this project involved two phases; the planning phase and the building phase. In the planning phase, we made selections for the airfoil, wing, fuselage, tail, elevators, and ailerons. These choices were made using aeronautical engineering concepts and theory. For the building phase, we focused on materials selection, fabrication, and testing.
During our design process, a lot of time went to choosing …
Transparent Furnace For Observing Electrochemical Separation Of Used Nuclear Fuel, Hoor Almazmi, Abbie Dewitte, Kelli Mckenna, Svetlana Ruseva
Transparent Furnace For Observing Electrochemical Separation Of Used Nuclear Fuel, Hoor Almazmi, Abbie Dewitte, Kelli Mckenna, Svetlana Ruseva
Capstone Design Expo Posters
Electrochemical separation of used nuclear fuel (UNF) operating at 500°C is confined within a furnace, making it difficult for a visual observation. Thus, flow characteristic predictions from the furnace are often calculated through advanced computational modeling methods. Therefore, it is necessary to develop an innovative idea, combining mechanical and chemical skill sets to design and build a transparent furnace that provides a clear visualization that can later be coupled with an optical flow-visualization method, such as Laser Doppler Anemometry (LDA). Deliverables of the project include the complete design and illustration of the prototype operating up to 500°C. Challenges of the …
Formula Hybrid At Vcu: Epicyclic Power Distribution System, Brandon Rivera, Dmitriy Kirzhner, Maxwell O’Neill, Ryan Witko
Formula Hybrid At Vcu: Epicyclic Power Distribution System, Brandon Rivera, Dmitriy Kirzhner, Maxwell O’Neill, Ryan Witko
Capstone Design Expo Posters
In today’s automotive industry, the need for more performance and power efficiency is ever increasing. However, with the growing concern of greenhouse gases and their impact on the environment, petrol burning cars need to be improved. Hybrid powertrains in automotive vehicles are being designed to increase fuel economy, reduce emissions, and improve engine efficiency through gearing all the while being competitive.
Our senior design team has developed an epicyclic power distribution (EPD) system which combines two independent power inputs from an electric motor and an internal combustion engine (ICE). This system has been designed specifically for the Formula Hybrid race …
Electromechanical Robotic Platform For Patient Motion Management In Radiotherapy, Thomas Dwyer, Ross Cruikshank, Daniel Martinez, Melvin Rosario
Electromechanical Robotic Platform For Patient Motion Management In Radiotherapy, Thomas Dwyer, Ross Cruikshank, Daniel Martinez, Melvin Rosario
Capstone Design Expo Posters
Head and neck cancer is often treated with radiation therapy. During this treatment, patient movement causes healthy cells to receive excessive radiological dose. We have designed an electromechanical robotic platform that enables compensation of patient movement during treatment. This project includes analysis of materials and motion of the system, design of the control system and model, and the functional prototype. The design of the robotic platform will be compatible with pre-existing head and mouth harnesses in order to keep a patient’s head steady while the patient’s headrest in motion. For radiotherapy, this system requires radio-compatible materials. Through the use of …
Continuously Expanding Mandrel, Cory Bleistein, Dylan Dawson, Anton Rabinky, Marshall Smith
Continuously Expanding Mandrel, Cory Bleistein, Dylan Dawson, Anton Rabinky, Marshall Smith
Capstone Design Expo Posters
The purpose of this project was to develop a better, safer, more efficient system for Sealeze to manufacture spiral-wrapped strip brushes in a continuous fashion at a variable diameter. The end results produced a finalized drawing sheet for machining and production, numerous design variations within CAD drawings, and extensive mechanical evaluations and analyses proving the strength and capabilities of the proposed design. In production of these brushes, various different materials will be used for the core, backing, and filament, creating a need for a mandrel that will be strong enough to handle the most resiliant of materials while maintaining a …
Flow-Differential Pressure Test Rig, Stuart Jennings, David Keegan, Juan Ramonet, Nicholas Upton
Flow-Differential Pressure Test Rig, Stuart Jennings, David Keegan, Juan Ramonet, Nicholas Upton
Capstone Design Expo Posters
provider of filters for critical applications in various industries, Porvair Filtration Group often needs to validate the pressure drop across a given filter medium at various flow rates and to perform quality assurance prior to delivery. The Flow-Differential Pressure Test Apparatus will allow for a test cycle with significant savings in time and money for Porvair going forward.
The design uses high-purity deionized water as the test fluid and performs continual filtration to ensure consistent properties. Flow rates of 0-100 gallons per minute at pressures up to 100 psi gauge are achieved by controlling a pump with i) a variable-frequency …