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Articles 15841 - 15870 of 30246

Full-Text Articles in Mechanical Engineering

Optimizing A Hammer Forging Progression For A Large Hand Tool, Edgar Espinoza Oct 2015

Optimizing A Hammer Forging Progression For A Large Hand Tool, Edgar Espinoza

Master's Theses (2009 -)

In the forging industry of today the need for United States based companies to reduce cost and maintain or improve the quality of a product has become essential in order to remain competitive. A company such as Green Bay Drop Forge (GBDF), a manufacturer of standard and custom steel forgings, was tasked with improving the forging process of one of their large hand tool products. A large wrench, forged at GBDF was noticed to contain a large amount of flash and excessive amount of hammer blows required to forge the part. The large amounts of flash and excessive hammer blows …

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Golden Bite Mouth Guard, Caitlin M. Braun, Austin Fiegel, Eric Tyra, Alexandra Michaels Oct 2015

Golden Bite Mouth Guard, Caitlin M. Braun, Austin Fiegel, Eric Tyra, Alexandra Michaels

Mechanical Engineering Design Project Class

Dr. Kirk Quigless has designed the Golden Bite™ athletic mouth guard to properly align the jaw. Literature suggests that the proper alignment of the jaw will provide users with increased performance gains. Accurately determining these gains without bias is a difficult task. Dr. Kirk Quigless needs to quantify the performance gains from his mouth guard. The portable device designed in the Golden Bite™ Mouth Guard Project will record the force exerted by an individual over a period of time. From this data, Dr. Kirk Quigless can determine the change in force output from individuals with and without the mouth guard, …

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Asme Design Challenge Final Report, Charles S. Ahrens Feldman, Ashley R. Hosman, Julian D. Cecil, Maria E. Ferguson Oct 2015

Asme Design Challenge Final Report, Charles S. Ahrens Feldman, Ashley R. Hosman, Julian D. Cecil, Maria E. Ferguson

Mechanical Engineering Design Project Class

The American Society of Mechanical Engineers (ASME) 2016 Student Design Competition Challenge is to construct a compact system that can manufacture a projectile from a standard sheet of paper and propel it a maximum distance.

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Saran Wrap 2: Clip Handling Device, Alex Arteaga, Brian Lockwood, Cameron Adams Oct 2015

Saran Wrap 2: Clip Handling Device, Alex Arteaga, Brian Lockwood, Cameron Adams

Mechanical Engineering Design Project Class

The common household Saran Wrap has been in production since 1933. A common problem comes in the handling of the plastic sheet after being torn from the roll. Corners frequently fold on themselves, the sheet bunches up, and renders some pieces useless. Our objective was to create a device along with a system to eliminate these problems, without compromising the simplicity and speed of the original box cutter.

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Mems 411 - Self-Leveling Drone, Sarah Schubert, Anne Shellum, Andreea Stoica, Jillian Rose Oct 2015

Mems 411 - Self-Leveling Drone, Sarah Schubert, Anne Shellum, Andreea Stoica, Jillian Rose

Mechanical Engineering Design Project Class

1.1 The objective of this senior design project was to design and build an aerial drone with a landing gear system that would allow leveling and take off from a sloped terrain. The drone should be able to level on a slope with a maximum incline of 20 degrees and the leveling process should not exceed 30 seconds. In addition, the leveling system must be automatic and deployed using the flight controller.

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Commuting Moped For Mems411, Jon Okenfuss, Charlie Mellinger, Ethan Bermudez Oct 2015

Commuting Moped For Mems411, Jon Okenfuss, Charlie Mellinger, Ethan Bermudez

Mechanical Engineering Design Project Class

Our project is to design and build a moped that can be used to commute from home to the Washington University campus, and then be used as a pedal powered transport for travel on the campus grounds.

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Plate Pouring Iii, Dagmawi T. Gebreselasse, Zach Rouse, Adam Cooperberg Oct 2015

Plate Pouring Iii, Dagmawi T. Gebreselasse, Zach Rouse, Adam Cooperberg

Mechanical Engineering Design Project Class

This project, Plate Pouring III, is an automated device that fills petri dishes with a liquid solution called Agar. This is done in a sterile environment, not needing any human interaction for the mechanism to function. It safely removes the lid individually from petri dishes, injects the solution, reinserts the lid, and stacks the filled petri dishes.

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Mems 411 Final Report - Plate Pourer Ii, Minsoo Ha, Patrick Champlin, Timothy Young Oct 2015

Mems 411 Final Report - Plate Pourer Ii, Minsoo Ha, Patrick Champlin, Timothy Young

Mechanical Engineering Design Project Class

The objective of this project is to create a machine that has the capability to pour Petri dishes. The usage of this machine must be easier than simply performing the task by hand, be automated, capable of producing 120 plates per hour, be sterile, prevent the plates from sloshing, fit in a fume hood, and stack the plates while they are cooling so that they may cool properly. This all was accomplished with a device that drops the plates vertically down, fills them, and then lowers them into storage thanks to their now increased mass and a spring-loaded platform.

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The Design Of A Paper Launching Device, Nicholas J. Cooley, Jake Michael Emmerick, Matthew Ludwig Oct 2015

The Design Of A Paper Launching Device, Nicholas J. Cooley, Jake Michael Emmerick, Matthew Ludwig

Mechanical Engineering Design Project Class

The American Society of Mechanical Engineers has challenged us to create a machine that forms a projectile from a single sheet of paper, and then launches that projectile. The success of the device will be measured by how far the projectile is effectively propelled, how straight the projectile is propelled, and how much volume the device takes up when packaged.

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Backpack I Final Report, James E. Norlin, Catherine G. Roy-Ting, Anna L. Stebbins, Justin Bae Oct 2015

Backpack I Final Report, James E. Norlin, Catherine G. Roy-Ting, Anna L. Stebbins, Justin Bae

Mechanical Engineering Design Project Class

The backpack carrier carries a child between 15 and 35 lbs. safely and securely. The carrier is specifically designed to be useful for a parent traveling with their child by airplane. Key additional features include roll-behind ability, diaper storage, and a stable kickstand mechanism.

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Senior Design Report, Watermelon Washer/Cutter, Jack Walsh, Eric Martel, Colin Lane, John Jedlicka Oct 2015

Senior Design Report, Watermelon Washer/Cutter, Jack Walsh, Eric Martel, Colin Lane, John Jedlicka

Mechanical Engineering Design Project Class

This project's goal was to design a mechanical system that would help facilitate: (1) washing the rind of a watermelon before cutting; (2) Cutting the first disk from the melon; (3) Catching the two “halves” after cutting the first disk; (4) Sealing the exposed surface of the two halves as is now commonly done with plastic wrap; and (5) storing the “started” watermelon in the refrigerator.

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Designing A High-Lift Performance Wingsuit, Kimon Stephanopoulos, Ben Levy, Ignacio Rabadan Jr. Oct 2015

Designing A High-Lift Performance Wingsuit, Kimon Stephanopoulos, Ben Levy, Ignacio Rabadan Jr.

Mechanical Engineering Design Project Class

Many current wingsuits are at their aerodynamic limit due to poor performance from the fabric that makes them up. We propose to evaluate the benefit of adding a rigid wing to the wingsuit, using rapid prototyping in a 3D printer and non-dimensional wind tunnel analysis.

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Mems 411 Design Report - Modular "Do-It-All" Drone, Nicholas Okafor, Jordi Turner, David Brablec, Ike Witte Oct 2015

Mems 411 Design Report - Modular "Do-It-All" Drone, Nicholas Okafor, Jordi Turner, David Brablec, Ike Witte

Mechanical Engineering Design Project Class

The main objective of this senior design project is to design and build a capability that allows different attachments (i.e. camera, flashlight, speakers, hook) to be attached and detached electromechanically from a drone. The main challenge in this project was our cost constraints. Weight is one of the most important constraints in aerial vehicles, and with a small budget, it was very challenging to find a powerful drone and manufacture light and durable parts. The modular system involved two general components: a drone retrofit and the attachments. The drone needed to be retrofitted to house additional electronics (i.e. Arduino, remote …

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Mems 411 Senior Design 2015 Moped 3 Final Report, Megan Rupp, Luke Duschl, Ben Lake, Brandon Staffeil Oct 2015

Mems 411 Senior Design 2015 Moped 3 Final Report, Megan Rupp, Luke Duschl, Ben Lake, Brandon Staffeil

Mechanical Engineering Design Project Class

Our goal was to design and build a moped/motor scooter that is legal to drive in Missouri, collapses for storage, and rolls around like luggage. The user wanted the vehicle to be comfortable enough for a twenty-minute commute. This report documents our design process and highlights our final prototype.

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2015 Asme Design Competition - Group Iii Final Report, Matthew J. Yurescko, Nick Divincenzo, Sam Johnson, Sean Cole-Jansen Oct 2015

2015 Asme Design Competition - Group Iii Final Report, Matthew J. Yurescko, Nick Divincenzo, Sam Johnson, Sean Cole-Jansen

Mechanical Engineering Design Project Class

The 2015 ASME Challenge was to construct a device which manufactures a projectile from a piece of copy paper then launches it as far as possible. At the competition, each team has five minutes to assemble their machine, craft three projectiles and fire them for a cumulative distance. In addition to launching paper projectiles as far as possible, the machines must also be designed to take up as little space as possible while still performing its main function effectively. A team’s final score is the ratio of the cumulative distance of all three projectiles to the volume of a box …

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Whiteboard Marker Dispenser, Ellen Toennies, Nicole Kawamoto, Aditya Sharma Oct 2015

Whiteboard Marker Dispenser, Ellen Toennies, Nicole Kawamoto, Aditya Sharma

Mechanical Engineering Design Project Class

In an effort to provide a constant supply of functioning markers to classrooms, labs, and other student spaces around campus, we designed and built a device to incentivize the storage, use, and return of whiteboard markers. Our Whiteboard Marker Dispenser offers customers a visually appealing, interactive manner of ensuring that the collaborative nature of the learning experience will not be hindered by a lack of resources.

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From Quadcopter To Submarine, Everett C. Brown Ii, Juan Matheus, Sam Gardner Oct 2015

From Quadcopter To Submarine, Everett C. Brown Ii, Juan Matheus, Sam Gardner

Mechanical Engineering Design Project Class

The goal of this project was to create a quadcopter that is capable of going underwater and returning to the surface to take off again. This concept was created after speaking with a customer that had very specific user needs. The project included creating several different designs and doing a concept selection based on these user needs. After selecting a concept, a design was created and adjusted based on an engineering analysis. The parts were selected based on a budget that was assigned to the project and a prototype was created. The final prototype was capable of flight and was …

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Plate Pouring Device I, Katelyn Jones, Lydia Stensberg, Rebecca Ansolabehere Oct 2015

Plate Pouring Device I, Katelyn Jones, Lydia Stensberg, Rebecca Ansolabehere

Mechanical Engineering Design Project Class

The goal of this project was to build a cost-effective automated system that can handle the process of pouring agar into plates, but is also easily sterilized and operates with no supervision. This agar plate-pouring machine is intended to increase productivity in small-scale biology and research labs by pouring at least 120 plates per hour while keeping the agar sterile and preventing contamination. This was accomplished with a multi-valve system controlled by an Arduino board which could also fit inside of a fume hood.

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Saran Wrap Handling Device, Son N. Trinh, Yi M. Hou, Andres Adams Oct 2015

Saran Wrap Handling Device, Son N. Trinh, Yi M. Hou, Andres Adams

Mechanical Engineering Design Project Class

No abstract provided.

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Collapsible Moped, Kyle Seymour, Christopher Mertens, David Southmayd, Margaret Liu Oct 2015

Collapsible Moped, Kyle Seymour, Christopher Mertens, David Southmayd, Margaret Liu

Mechanical Engineering Design Project Class

The ultra-light, collapsible street-legal moped combines the desired qualities of a motorcycle, a bicycle, and a skateboard. This innovative design allows the user to travel distances with a speed up to 30 miles per hour on a standard street, but also to navigate safely around a pedestrian-dominated college campus. Weighing less than 30 lbs, this moped allows the user to carry it wherever without the being burdened by the bulk or size of the vehicle. The user can fold up the moped in less than 60 seconds to fit under his or her arm for easy transportation and storage. Like …

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Moped Ii - Frankenbike, Nkiru Udenze, Sade Odumuye, Jake Gaskill Oct 2015

Moped Ii - Frankenbike, Nkiru Udenze, Sade Odumuye, Jake Gaskill

Mechanical Engineering Design Project Class

A “street legal” traditional moped (functions with both motorized and pedal components) was set forth as the basis of our design problem. Additional commuter needs of rain protection and storage capabilities were chosen for our design niche. Some collapsible components were developed as well.

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Human Powered Ice Resurfacing Machine, Nicholas Furman, Kameryn Truman, Meagan Leonard Oct 2015

Human Powered Ice Resurfacing Machine, Nicholas Furman, Kameryn Truman, Meagan Leonard

Mechanical Engineering Design Project Class

The purpose of this project was to design and build an ice-resurfacing machine that was entirely human powered so it could be used safely on outdoor rinks and prevent harmful emissions indoors. This required analysis of several different mechanical systems and many different attempts to produce a working prototype. The prototype reduces the amount of water used when compared to a current ice-resurfacing machine by recycling snow from the ice. The sources of risk were determined, analyzed and solved throughout the project.

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Drone Iv - The Final Chapter (Parasol Drone), Noah M. Rosenblatt, Charles F. Warwick, Connor M. Furlong Oct 2015

Drone Iv - The Final Chapter (Parasol Drone), Noah M. Rosenblatt, Charles F. Warwick, Connor M. Furlong

Mechanical Engineering Design Project Class

Project to create a controllable, aerial drone capable of providing shading from UVA/UVB radiation. Consumers will be able to participate in outdoor activities (run, walk, play sports, etc.) while being protected from the sun. Shading mechanism can open and close midflight with the press of a button. No prior experience necessary for operation. Appropriate for all weather conditions except rain or snow (electronics of drone should not get wet). Adult supervision is necessary for children under the age of twelve.

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Plate Pouring Iv, Alexander F. Kwakye, Carey D. Haefele, Arjay Parhar Oct 2015

Plate Pouring Iv, Alexander F. Kwakye, Carey D. Haefele, Arjay Parhar

Mechanical Engineering Design Project Class

From a high school biology class to a small research facility, this machine will cheaply (relative to its competitors) automatically pour a layer of agar into a large number of Petri dishes in order to grow bacteria micro-cultures. Designed to be powered within a fume hood, the user simply needs to open up the containment facility, insert stacks of Petri dishes, and pour in a batch of premade agar. Within the hour, approximately 120 Petri dishes should be layered and ready for further experimentation.

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Health Condition Monitoring And Fault-Tolerant Operation Of Adjustable Speed Drives, Jiangbiao He Oct 2015

Health Condition Monitoring And Fault-Tolerant Operation Of Adjustable Speed Drives, Jiangbiao He

Dissertations (1934 -)

Adjustable speed drives (ASDs) have been extensively used in industrial applications over the past few decades because of their benefits of energy saving and control flexibilities. However, the wider penetration of ASD systems into industrial applications is hindered by the lack of health monitoring and fault-tolerant operation techniques, especially in safety-critical applications. In this dissertation, a comprehensive portfolio of health condition monitoring and fault-tolerant operation strategies is developed and implemented for multilevel neutral-point-clamped (NPC) power converters in ASDs. Simulations and experiments show that these techniques can improve power cycling lifetime of power transistors, on-line diagnosis of switch faults, and fault-tolerant …

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2015 (Fall) Ensi Informer Magazine, Morehead State University. Engineering Sciences Department Oct 2015

2015 (Fall) Ensi Informer Magazine, Morehead State University. Engineering Sciences Department

ENSI Informer Magazine Archive

The ENSI Informer Magazine published in the fall of 2015.

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Multiple Point Constraint (Mpc)-Based Variable Node Super-Element, Mohamad Eftekharjoo Oct 2015

Multiple Point Constraint (Mpc)-Based Variable Node Super-Element, Mohamad Eftekharjoo

Mechanical & Aerospace Engineering Theses & Dissertations

The multiple point constraint (MPC)-based variable node element is introduced in this study to handle mismatched meshes between sub-domains in finite element analysis. The MPC-variable node element is a collection of a group of elements. The compatibility condition along the interface boundary is imposed along the edge of these elements through Lagrange multipliers. The Elimination method is then used to remove the effects of the dependent nodes in these elements to produce a single MPC-based variable node element. The derived variable node elements are applied to solve two plane strain problems in order to validate the accuracy of the proposed …

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Design And Validation Of A Complex Loading Whole Spinal Segment Bioreactor, Amanda Marie Beatty Oct 2015

Design And Validation Of A Complex Loading Whole Spinal Segment Bioreactor, Amanda Marie Beatty

Theses and Dissertations

Intervertebral disc (IVD) degeneration is a prevalent health problem that is highly linked to back pain. To understand the disease and tissue response to therapies, ex-vivo whole IVD organ culture systems have recently been introduced. The goal of this study was to develop and validate a whole spinal segment culturing system that loads the disc in complex loading similar to the in-vivo condition, while preserving the adjacent endplates and vertebral bodies. The complex loading applied to the spinal segment was achieved with three pneumatic cylinders. The pneumatic cylinders were rigidly attached to two triangular alumni plates at each corner, comprising …

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Investigation Of Surface Topography Effects On Metal Flow Under Lubricated Hot Compression Of Aluminum, Justin Irvin Kurk Oct 2015

Investigation Of Surface Topography Effects On Metal Flow Under Lubricated Hot Compression Of Aluminum, Justin Irvin Kurk

Master's Theses (2009 -)

An investigation was conducted to study the effects of die surface topography, specifically surface roughness and lay, on metal flow and the friction factor under lubricated hot compression. 6061-T6 aluminum rings and square bar stock specimens were compressed on H-13 tool steel platens machined with a unidirectional lay pattern to six different roughnesses between a R 10 and 240 μin. A lab based hydraulic press mounted with an experimental die set was used for all testing. Repeated trials were conducted using high temperature vegetable oil and boron nitride lubricants. Metal flow was quantified as a function of surface roughness, lay …

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Dynamic Project Time And Cost Evaluation Under The Combined Influence Of Contract, Quality, And Uncontrollable Change, Thomas V. Hammock Oct 2015

Dynamic Project Time And Cost Evaluation Under The Combined Influence Of Contract, Quality, And Uncontrollable Change, Thomas V. Hammock

Mechanical & Aerospace Engineering Theses & Dissertations

This dissertation proposes a method that quantifies the dynamics caused by disruptions due to multiple changes that can occur during the progression of a large scale project. To begin, equations consisting of multiple parallel event sequences are derived that define the relationship between individual process events and the final project completion time. Matrix notation and a precedence matrix concept are used in this derivation to produce equations that are best suited for computer programming applications. This relationship is the foundation upon which the equations are built to calculate the variation impact on each event of a large scale project. Pursuing …

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