Mechanical Engineering Commons^™

The Effects Of Thermal Procedure On Transformation Temperature, Crystal Structure And Microstructure Of Cu-Al-Co Shape Memory Alloy, Y. Aydoğdu, M. Kök, F. Dağdelen, A. Aydoğdu, Ali S. Turabi, Haluk E. Karaca

Mechanical Engineering Faculty Publications

The purpose of this study is to investigate the effects of different thermal procedures of the Cu-Al-Co shape memory alloy on its crystal structure, transformation temperature and microstructure. The alloys were subjected to a heat treatment and then cooling was applied at four different conditions. After the thermal process, XRD, DSC, optical microscopy and micro-hardness measurements were carried out. The experimental studies showed that crystal structure, microstructure and transformation temperature of Cu-Al-Co alloy were changed from the cooling conditions.

Assessment Of Force Coordination And Neuromuscular Quickness In Healthy Adults, Karen L. Haberland

Theses and Dissertations

Throughout daily life, it is necessary to handle and control innumerable objects. To do so, one’s hands must be precisely regulated. To ensure that an object is effectively manipulated, an individual must apply a grip force (GF) perpendicular to the object’s surface to overcome load force (LF), which acts tangential to the surface to counteract the object’s weight and inertia. Previous studies have shown an elaborate coordination between GF and LF in a variety of object manipulation tasks in healthy populations. This kinetic analysis is clinically important because the GF-LF coordination is shown to deteriorate in aging and neurologically impaired …

System And Method For Identifying Electrical Properties Of Integrate Circuits, Mary Y. Lanzerotti

AFIT Patents

A new method for displaying electrical properties for integrated circuit (IC) layout designs provides for improved human visualization of those properties and comparison of as designed layout design parameters to as specified layout design parameters and to as manufactured layout parameters. The method starts with a circuitry as designed layout in a first digital format, extracts values for electrical properties from that circuitry as designed layout then annotates those values back into the first digital format. The annotated circuitry as designed layout is then converted from the first digital format to a second digital format that can be converted to …

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 …

Effect Of Spalled Particles Thermal Degradation On A Hypersonic Flow Field Environment, Raghava S. C. Davuluri, Huaibao Zhang, Alexandre Martin

Mechanical Engineering Faculty Publications

Two-way coupling is performed between a spallation code and a hypersonic aerothermodynamics CFD solver to evaluate the effect of spalled particles on the flow field. Time accurate solutions are computed in argon and air flow fields. A single particle simulations and multiple particles simulations are performed and studied. The results show that the carbon vapor released by spalled particles tend to change the composition of the flow field, particularly the upstream region of the shock.

Orchard Bin Atv Trailer, Neil F. Leitz

All Undergraduate Projects

A local orchardist was experiencing a problem that was being caused by their lack of apple picking bin moving equipment. The orchardist needed a well-engineered solution to this lack of equipment. The solution arrived at was a five bin trailer. There were multiple design requirements for this trailer, including the device needing to be able to interface with an ATV, be able to be loaded by hand, be able to carry five bins, and not exceed a budget of $750. While perfecting the design of the trailer, a number of different disciplines were utilized, which included dynamics, kinematics, static loading …

Grant County Public Utilities District - Rotor Pole Lifting Device, Baylie Johnson

All Undergraduate Projects

Grant County Public Utilities District is planning a rehabilitation of all turbine and generator units at Priest Rapids Dam beginning in August 2016. After the generator rotor is removed from the unit, the rotor poles must be removed from the rotor. They are oriented vertically in the rotor and horizontally on the floor and in shipping containers. The objective of this project is to design, manufacture and test a lifting and a turning device for Priest Rapids Dam’s generator rotor poles. The lifting device was designed to attach a 3500 pound rotor pole to a crane and lift it. The …

Solar Water Heater: Mobile Stand, Tyson Nakamura

All Undergraduate Projects

During the course of this project, a solar thermal collector and supporting stand were designed and manufactured to be used during Mechanical Engineering Technology labs. Students will be able to use the collector to heat water, with the sun being the only heat source. The collector was designed by calculating surface area limitations, estimated solar input, and desired efficiency, to find the required water flow rate. From there, the necessary pipe lengths and diameters were determined, and the solar thermal collector was constructed. Two pipe paths were manufactured: a curved path, and a manifold path. Students will be able to …

Jeep Wj Multipurpose Oversize Spare Tire Carrier, Caleb J. Marrs

All Undergraduate Projects

OEM spare-tire wells have size limitations that only allow up to a certain size tire. However, the OEM tire well is not effective for the off-road enthusiast that needs an extra over size tire in case of an emergency. While off-roading it is important to be equipped with all the necessary tools and parts to get out safely because there is no roadside assistance off-road. The Jeep WJ is not a popular off road vehicle which means aftermarket accessories are not common. In order to optimize the space inside and out of the vehicle, a device is needed that will …

The Prosthetic Finger, Jose L. Garcia

All Undergraduate Projects

While, some human beings are born normal others have lost limbs at birth or through an event in their life. The main focuses will be on designing and building a better prosthetic finger, to obtain at least 2 to 6 pounds of force when it’s contracted. Calculations and specifications were solved for first in order to build the prosthetic, as the prosthetic finger was compared to past prosthetics. The prosthetic finger was first constructed as a 3D model on SolidWorks to virtually test its movements and limitations. After, the prosthetic finger was tested virtually the components specified were either ordered, …

H.F. Hauff Pruner Housing & Ergonomics, Erich E. Heilman

All Undergraduate Projects

The technology of electric tree pruners in the current agricultural market has many engineering problems, including; a deficit in power output, excessive overheating, and ergonomics. The 3-man pruner team has coordinated with H.F. Hauff Co. Inc., an agricultural equipment company owned by Neil Hauff, to produce an electric pruner prototype which addresses these problems. The methods used to design the optimal pruner prototype includes traditional engineering stress analysis, force flow analysis, finite element software, and Solidworks modeling software. The construction of the pruner involved manual machining methods and C.N.C. (Computerized Numerical Control) mill technology. During the design process, the team …

Paper Core Feeder System, Sergio Flores Velez

All Undergraduate Projects

Paragon Films has always strived to increase productivity and decrease waist within their company. The plant located in Union Gap, Washington currently has two production lines operating 24/7 managed by 2 to 3 people. The heavy line produces 5000 to 10000 revolutions per roll. This production line has a three part system that automatically feeds the paper cores to the spool shafts to roll the films. Therefore, the employees during that shift do not have to worry about filling up the bin very often. On the other hand, the second production line, which produces the hand films, does not have …

Multiple Apple Box Lift 1/10th Scale Model, Kyle J. Burlingame

All Undergraduate Projects

Title and Author: 1/10th Scale Multiple Apple Box Lift by Kyle Burlingame (Engineering Technologies, Safety, and Construction) Abstract/Artist statement: A 1/10th scale Multiple Apple Box Lift was designed and built as a proof of concept for a full scale device. The Multiple Apple Box Lift was designed to meet a customer’s requirements and to be presented at SOURCE. This device lifts the top half of the stacked apple boxes on a pallet in order to allow access to the boxes in the middle of the stack. The device can be manually operated by two people while in-between narrow rows of …

H.F. Hauff Pruner Cutting System, Daniel J. Gibson

All Undergraduate Projects

The technology of electric tree pruners in the current agricultural market has many engineering problems, including; a deficit in power output, excessive overheating, and ergonomics. The 3-man pruner team has coordinated with H.F. Hauff Co. Inc., an agricultural equipment company owned by Neil Hauff, to produce an electric pruner prototype which addresses these problems. The methods used to design the optimal pruner prototype includes traditional engineering stress analysis, force flow analysis, finite element software, and Solidworks modeling software. The construction of the pruner involved manual machining methods and C.N.C. (Computerized Numerical Control) mill technology. During the design process, the team …

Dynamometer Stabilizer, Derek A. Lamarche

All Undergraduate Projects

Overhauling the CWU small engine Dynamometer in the CWU power lab will make it more ridged during the measurement of power in these engines. The goal of the project is to have the dyno used in the Small engines class run by a staff member and to be run by the students. The dynamometer does not work within the specified limits making it impractical to perform during lab

H.F. Hauff Pruner - Power System, Thomas T. Wilson

All Undergraduate Projects

The technology of electric tree pruners in the current agricultural market has many engineering problems, including; a deficit in power output, excessive overheating, and ergonomics. The 3-man pruner team has coordinated with H.F. Hauff Co. Inc., an agricultural equipment company owned by Neil Hauff, to produce an electric pruner prototype which addresses these problems. The methods used to design the optimal pruner prototype includes traditional engineering stress analysis, force flow analysis, finite element software, and Solidworks modeling software. The construction of the pruner involved manual machining methods and C.N.C. (Computerized Numerical Control) mill technology. During the design process, the team …

The Design And Construction Of A Torque Measuring Arm For An Air Motor, Logan Dearinger

All Undergraduate Projects

There is a system efficiency lab that sits in the thermodynamics lab of the Mechanical Engineering Technologies department. To expand this lab, a torque measuring device was needed to measure the torsional force that the pump exerts on the air motor. The expansion of this lab is important to give a better understanding of how the different mechanical parts effect the efficiency of the overall system. The first step in the expansion process was the design of a suitable torque measuring device. The most efficient design was a simple one with minimal moving parts. When the air motor is energized …

Rider's Aid, E-Bike Kit, Song Wang

All Undergraduate Projects

When it comes to observing the schema of upgrading bicycles into a hybrid model, the existing model usually costs hundreds of dollars and more than one hour of installation since it requires the process of replacing a wheel or even purchasing a new bicycle. But in fact, it was not necessary to remove the original wheel because the key to achieve power drive could be taken as an external function added to the primitive bike. Under the conditions of retaining applicability and safety that transportation should never get rid of, this project was focusing on reducing budget and saving time …

Paper Airplane Building Machine: Paper Loading, Power Source, Machine Frame, Abdullah A. Aldakhail

All Undergraduate Projects

The project was motivated by an ASME 2016 design challenge. The challenge was to design and manufacture a device that would turn a single sheet of paper into a paper airplane and launch it. The project was divided into three portions. The proposal was biased on loading the paper into the machine, design and manufacture the machine frame and provide a reliable power source. A slow rpm motor was needed for the loading mechanism to prevent the paper from being damaged. To avoid any deflection in the frame, the total weight of the machine had to be considered. The shear …

The Pneumatic Leg Extension, David G. Sedano

All Undergraduate Projects

In recent years, reaching altitudes that are higher than your normal-height has evolved from pure amusement to an “in-demand” necessity out in the field. Means of achieving greater than normal height range from wooden poles to aluminum stilts. The era of ladders and other extension methods are slowly fading away. There are many designs in the market that focus on different factors to make a stilt. As other designs focus on one or two enhancements, the pneumatic leg extension’s objective is to improve all aspects of the stilt. This radical new design differs greatly from traditional stilt designs. The pneumatic …

Suspension For Electrathon Vehicle, Mackenzie Ericson Angeledes

All Undergraduate Projects

The purpose of this project was to develop a rear suspension system to support the frame of an Electrathon Vehicle. The vehicle is designed to compete in the Electrathon America competition on behalf of the Central Washington University Electric Vehicle Club. The suspension system was designed to use readily available parts sourced from manufacturers to keep the components serviceable. Using dynamic and static engineering analysis (spring equations, equations of equilibrium, stress calculations), the necessary custom components were designed. Space restrictions and limitations of the preexisting frame necessitated modifications, such as the straightness of the frame and the positioning of existing …

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

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

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

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

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

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

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

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

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 …