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Articles 241 - 270 of 376
Full-Text Articles in Mechanical Engineering
Alternative Approach To Sand Bags For Flood Prevention Through The Use Of 3d Printed Flood Panels, Thomas Beaver, William Mcbryan, Matthew Gilliam
Alternative Approach To Sand Bags For Flood Prevention Through The Use Of 3d Printed Flood Panels, Thomas Beaver, William Mcbryan, Matthew Gilliam
Washington University / UMSL Mechanical Engineering Design Project JME 4110
This is an alternative approach to sand bags which could save time and money when implementing temporary barriers around critical areas during times of flooding in flood plains or areas near rivers.
Reducing Soil Compaction In Agriculture, Chris Gum, Justin Manzella, Brett Kayman
Reducing Soil Compaction In Agriculture, Chris Gum, Justin Manzella, Brett Kayman
Washington University / UMSL Mechanical Engineering Design Project JME 4110
Our project was to prototype a device to reduce compaction in soil during industrial agricultural processes. We chose to highlight tilling as the process to focus on, but our final design could be adapted to work for many different applications.
One Knee Stair Negotiator, Naomi Marciante, Seth Trevino
One Knee Stair Negotiator, Naomi Marciante, Seth Trevino
Washington University / UMSL Mechanical Engineering Design Project JME 4110
The design-to-prototype process for a One Knee Stair Negotiator, designed to reduce or eliminate the weight on one leg while climbing stairs. The decision-making processes, fabrication plan, engineering analysis, safety concerns, and risk assessments are documented. Pertinent photographs, drawings, and video links are included for clarification.
Jme 4110 Mechanical Engineering Design Project:Stir It Up, Josephn Biermann, Brittany Gray, Nathan Hopper
Jme 4110 Mechanical Engineering Design Project:Stir It Up, Josephn Biermann, Brittany Gray, Nathan Hopper
Washington University / UMSL Mechanical Engineering Design Project JME 4110
We are designing and building a working prototype that will be able to mix a separated beverage back to a fully integrated state. This will allow for mixing in a beverage that was separated and would possibly just be thrown away because it doesn’t taste right anymore. This will save food waste from separated beverages being thrown away as well as be environmentally friendly since it would reduce the use of single use cups and straws.
Automated Single Stream Recycling Sorting Bin (Assrsb), Daniel Pogue, Robert O'Neill, Javi Perez
Automated Single Stream Recycling Sorting Bin (Assrsb), Daniel Pogue, Robert O'Neill, Javi Perez
Washington University / UMSL Mechanical Engineering Design Project JME 4110
As you probably know, there are many different sorting systems used by various manufacturers. It would be desirable to have a similar sorting system that uses multiple technologies to sort items, but that could easily be interchangeable with various items. Currently, recycling efforts are often costly, as humans need to sort single-stream recycling. It would be beneficial to have a system that sorts various plastic, paper, cardboard, glass, etc.
Portable Car Lift, Ramiz Ahmed, Emel Saeidghafelpoor, Nick Pusateri
Portable Car Lift, Ramiz Ahmed, Emel Saeidghafelpoor, Nick Pusateri
Washington University / UMSL Mechanical Engineering Design Project JME 4110
No abstract provided.
Optimus Pipefitter, Jeffrey Strecker, Vito Fiordimondo, Ben Prinster
Optimus Pipefitter, Jeffrey Strecker, Vito Fiordimondo, Ben Prinster
Washington University / UMSL Mechanical Engineering Design Project JME 4110
As climate change becomes a larger threat, the idea of space travel becomes a less abstract idea. If we, as a species, get to a point where settling on a new planet becomes a necessity it would be worthwhile for as much infrastructure to be built before our arrival as possible. The problem this project solves is the ability to autonomously assemble piping for plumbing and drainage. To most people, piping is not what comes to mind when thinking about modern living. Although it is certainly essential.
The Body Dryer Project, Laura Bailey, Luke Maichel, Nick Zuelke
The Body Dryer Project, Laura Bailey, Luke Maichel, Nick Zuelke
Washington University / UMSL Mechanical Engineering Design Project JME 4110
The information contained in this report pertains to the engineering practices to develop a working prototype of a body dryer. A body dryer that is described in the context of this report, is defined as a static structure with two air streams. The main function of the body dryer project is to investigate a replacement for a towel when one is finished showering or after swimming. This report will contain future improvements that were investigated but were not able to implement in the working prototype due to the boundaries of the system. A special shout out to Indoor Comfort Team, …
Computation Of Flow Fields Due To Single- And Twin-Jet Impingement, Xiang Zhang
Computation Of Flow Fields Due To Single- And Twin-Jet Impingement, Xiang Zhang
McKelvey School of Engineering Graduate Student Theses & Dissertations
The thesis consists of two parts. The first part focuses on numerical simulations and their comparison with experimental data for single-jet impingement on ground. Angles between the axisymmetric jet and impingement surface considered are 15, 30 and 90 degree. It is shown that both the k-epsilon and Wray-Agarwal (WA) model can predict the flow fields in good agreement with the experimental results. The second part extends the first part to twin-jet normal impingement on the ground. It focuses on numerical simulation of fountains formed by the twin-jet impingement. The fountains can be normal straight upward when the two jets are …
Fracture Toughness Improvement Of ����� Ceramics By Grain Size Control And Ductile Phase Reinforcement, Kesong Wang
Fracture Toughness Improvement Of ����� Ceramics By Grain Size Control And Ductile Phase Reinforcement, Kesong Wang
McKelvey School of Engineering Graduate Student Theses & Dissertations
This study used grain size control and ductile phase reinforcement to improve fracture toughness of ����� ceramics. Alpha alumina particles of 100 nm, 0.5-1 micrometers, and 10 micrometers were coated with 1-5 nm nickel by electroless nickel plating (ENP). The coated powders were consolidated at 1200℃-1500℃ by spark plasma sintering (SPS). The sintered samples were annealed at 1100 oC for 1.5 hours and 10 hours to determine the effect of post sintering annealing on hardness and fracture toughness. Density of the samples were measured by the standard Archimedes method using a 5 mL pycnometer. Hardness values were determined by Vickers …
Development Of A One-Equation Turbulence Model Based On K-Ε Closure And Its Extension For Computing Transitional Flows By Including An Intermittency Transport Equation, Cheng Peng
McKelvey School of Engineering Graduate Student Theses & Dissertations
No abstract provided.
Development Of A Multi-Probe Kelvin Scanner Device For Industrially-Relevant Characterization Of Surface-Activated Carbon Fiber Reinforced Thermoplastic Composites, Kirby Simon
McKelvey School of Engineering Graduate Student Theses & Dissertations
Carbon fiber reinforced thermoplastic (CFRTP) composites are becoming increasingly attractive materials in manufacturing due to their lightweight nature, mechanical strength, and corrosion resistance. Surface activation of these materials is usually required during processing to increase the bond strength of assemblies (aerospace and automotive industries) or improve adhesion with implants (biomedical industry). Industrially-relevant, nondestructive quality control methods for assessing the activation state of these materials do not currently exist, however. Applying principles discovered through the use of scanning probe microscopy, a multiple-probe Kelvin scanning (MPKS) device has been developed that can assess the uniformity of the activation state of plasma-treated CFRTP …
Pick And Place Bot: Asme Design Challenge, Steven Mumford, Josh Clark, Stephan Meyer
Pick And Place Bot: Asme Design Challenge, Steven Mumford, Josh Clark, Stephan Meyer
Mechanical Engineering Design Project Class
Design a bot that meets the standards of and is able to compete in the 2019 ASME Design Challenge.
Group B: Polar Coordinate Whiteboard Writer, Dylan Wu, Zexin Han, Keon Kim, Jiahao Wei
Group B: Polar Coordinate Whiteboard Writer, Dylan Wu, Zexin Han, Keon Kim, Jiahao Wei
Mechanical Engineering Design Project Class
From the initial funding of $250.00, our group attempted to make a polar coordinate whiteboard writer that was to be used in educational settings. Market for polar coordinate whiteboard writer is a blue ocean. Having a successful prototype will allow us to find a niche place in a market that shares border with the global education market.
Group V: Color Mixer, Kate Baskin, Mark Livshin, Andy Johnston
Group V: Color Mixer, Kate Baskin, Mark Livshin, Andy Johnston
Mechanical Engineering Design Project Class
This project was an exercise in product design, modeling, and prototyping. The result of this process was a partially functional prototype which successfully met two of the three design goals.
Group L: T-Shirt2 Cutter, Sophie Anderson, Avery German, Taylor Tuleja
Group L: T-Shirt2 Cutter, Sophie Anderson, Avery German, Taylor Tuleja
Mechanical Engineering Design Project Class
The T-shirt square cutter was commissioned by fashion design professor at Washington University, Dr. Mary RuppertStroescu who has developed a method of turning T-shirts that might have otherwise been thrown away into a unique, woven fabric. Dr. Ruppert-Stroescu cuts T-shirts into either strips or squares that she then quilts together, she uses this fabric to make one-of-a-kind clothes, bags, and rugs. Though she is proficient at weaving the fabric scraps together, cutting the Tshirts was a very time-consuming process – it takes her at least 20 minutes to cut a T-shirt into squares by hand. Our team was tasked with …
Autonomous Ground Photographer, Sylvia Tan, Nicholas C. Smith, Kate Padilla, Elise Ashley
Autonomous Ground Photographer, Sylvia Tan, Nicholas C. Smith, Kate Padilla, Elise Ashley
Mechanical Engineering Design Project Class
Dr. Penczykowski, a biology professor at Washington University in St. Louis, researches the effects of powdery mildew on three plant species. Her lab currently collects data in the field by manually counting the number of infected plants with the assistance of a simple PVC grid. Therefore, this projects aims to automate this process by capturing images that can then be processed in her lab after.
Group T Asme Design Challenge Project, Thomas Orgielewicz, Hayden Von Hoffmann, Michael Chirumbole
Group T Asme Design Challenge Project, Thomas Orgielewicz, Hayden Von Hoffmann, Michael Chirumbole
Mechanical Engineering Design Project Class
Design and build a RC Robot eligible to compete in the 2019 ASME Challenge, the "Pick-and-Place Race"
Tendon Rehabilitator, David Ricks, Lucas Parisot, Benjamin Wang
Tendon Rehabilitator, David Ricks, Lucas Parisot, Benjamin Wang
Mechanical Engineering Design Project Class
Our goal was to provide a cheap, portable and easy way for those suffering from medial epicondylitis tendinosis, or golfers elbow, to perform rehabbing exercises.
Group O - Lacrosse Ball Passer, Mackenzie Gordon, Jake Mennemeier, Conor Pellas
Group O - Lacrosse Ball Passer, Mackenzie Gordon, Jake Mennemeier, Conor Pellas
Mechanical Engineering Design Project Class
The goal of our design group was to make a lacrosse ball passer that could be used in a team practice or individual setting. Wayne Jaekle, WashU’s head lacrosse coach defined major customer needs as producing a consistent pass speed and angle, an interactive interface allowing an automatic time interval between passes, and being easy to load. These needs lead to our main design goals: 1. A ball capacity of 30, 2. A minimum pass speed of 30 mph, and 3. A 5 second time interval between passes. Mock ups and brainstorming exercises led to our team’s selection of a …
Asme Design Competition - Group H, Melanie Self, Ben Tattersfield, Joshua Emde
Asme Design Competition - Group H, Melanie Self, Ben Tattersfield, Joshua Emde
Mechanical Engineering Design Project Class
This document presents our solution for the ASME pick-and-place design competition. In brief, the challenge is to collect balls from an arena and return them to a ‘home base’. The specifics of the competition are elaborated on within. The document walks through the design decisions that went into the prototype; the Goalkeeper concept that we ultimately landed on best solved the problems presented by the challenge statement as interpreted by our customer, Dr. James Jackson Potter. Several of the design choices were made by applying mathematical relationships, with the math and results included to illuminate our methods. We include a …
Anisotropic Tissue Maker, Jake Ireland, Jaryd Huffman, Sarah Mohrmann, Daniel Cano
Anisotropic Tissue Maker, Jake Ireland, Jaryd Huffman, Sarah Mohrmann, Daniel Cano
Mechanical Engineering Design Project Class
Traumatic brain injury (TBI) is a common injury that is not thoroughly understood. Data on brain mechanics and motion are not abundant during the time of impact. In order to accumulate more data and achieve a better understanding of how the injury occurs tissue mimics can be made.
T-Shirt Square Cutter, Austin Chawgo, Kendall Weishaar, Samir Lopez
T-Shirt Square Cutter, Austin Chawgo, Kendall Weishaar, Samir Lopez
Mechanical Engineering Design Project Class
Each year, Americans waste millions of pounds of textiles in the form of clothing that is thrown away. Professor Mary Ruppert-Stroescu from the Sam Fox School of Design seeks to combat this by reusing the old fabric from discarded clothes and creating new, fashionable clothing. To do this, her and her students cut up donated shirts into small squares, by hand, using scissors and fabric cutters and sew them together using a method developed by her.. This process is very time consuming and limits the commercial viability of this process. The T-shirt Cutter design, detailed below, has the potential to …
Residential Automatic Door Opener, Steven Downs, Ardian Pollo, Ethan Bredemeier
Residential Automatic Door Opener, Steven Downs, Ardian Pollo, Ethan Bredemeier
Mechanical Engineering Design Project Class
This project proposes an innovative design for an automatic door opener intended for external doors of residential homes. The intended customers are elderly and disabled people who may benefit from such a device while entering and exiting their homes. The goal is to create an affordable product to compete with existing products that are relatively expensive to make such devices more accessible.
Universal Tube Fixture, Griffin Kivitz, Matthew Whitehill, Jason Hsu
Universal Tube Fixture, Griffin Kivitz, Matthew Whitehill, Jason Hsu
Mechanical Engineering Design Project Class
The goal of this design project was to create a device that can aid in the assembly of glue joints between concentric tubes. In many medical devices, whether they be laser probes, retractable injectors, or other devices with actuating parts, there are often concentric glue joints. The problem we are trying to solve is controlling where the 2 tubes are relative to one another when they are glued.
Lacrosse Ball Passing Machine, William Galik, Daniel Finer, Matt Jenkins
Lacrosse Ball Passing Machine, William Galik, Daniel Finer, Matt Jenkins
Mechanical Engineering Design Project Class
Design and build a lacrosse ball passing machine that utilizes an automated ball sorting mechanism to shoot balls up to 60 mph with 80 percent accuracy at a 1 square yard target.
Arliss Competition Canister Vehicle, Jessie Goldberg, Nicholas Cornejo, Tyler Smith, Rachel Kershner
Arliss Competition Canister Vehicle, Jessie Goldberg, Nicholas Cornejo, Tyler Smith, Rachel Kershner
Mechanical Engineering Design Project Class
For our project, we designed a canister vehicle that fits the design specifications of the ARLISS competition. For the ARLISS competition, the vehicles are loaded into a rocket, launched approximately 10,000 feet into the air, released, and then must autonomously navigate to a predetermined target on the ground. Because of our time restraint, we are focused on designing a vehicle of the correct dimensions (a maximum mass of 1050g, a maximum diameter of 146mm, and a maximum height of 240mm) that can simply travel on the ground over multiple types of terrain. Additionally, we designed a parachute release mechanism so …
Development And Application Of Rotation And Curvature Correction To Wray-Agarwal Turbulence Model, Xiao Zhang
Development And Application Of Rotation And Curvature Correction To Wray-Agarwal Turbulence Model, Xiao Zhang
McKelvey School of Engineering Graduate Student Theses & Dissertations
Computational Fluid Dynamics (CFD) is increasingly playing a significant role in the analysis and design of aircrafts, turbomachines, automobiles, and in many other industrial applications. In majority of the applications, the fluid flow is generally turbulent. The accurate prediction of turbulent flows to date remains a challenging problem in CFD. In almost all industrial applications, Reynolds-Averaged Navier-Stokes (RANS) equations in conjunction with a turbulence model are employed for simulation and prediction of turbulent flows. Currently the one-equation (namely the Spalart-Allmaras (SA) and Wray-Agarwal (WA) and two-equation (namely the k-ε and Shear Stress Transport k-ω) turbulence models remain the most widely …
Modeling Of Swimming Cells From Nano-Scale To Micro-Scale, Yicheng Zhao
Modeling Of Swimming Cells From Nano-Scale To Micro-Scale, Yicheng Zhao
McKelvey School of Engineering Graduate Student Theses & Dissertations
Certain human genetic diseases -- primary ciliary dyskinesia, infertility, and hydrocephalus -- are characterized by changes in beat frequency and waveform of cilia and flagella. Chlamydomonas reinhardtii, which is a single-cell green alga about ten micrometers in diameter that swims with two flagella, serves as an excellent biological model because its flagella share the same structure and genetic background as mammalian cilia and flagella. This study uses the finite element method to investigate the behavior of C. reinhardtii swimming from nano-scale to micro-scale. At the device-level, micro-scale modeling indicates that well-designed acoustic microfluidic devices can be used to trap groups …
Application Of Metabolic Modeling And Machine Learning For Investigating Microbial Systems, Ni Wan
Application Of Metabolic Modeling And Machine Learning For Investigating Microbial Systems, Ni Wan
McKelvey School of Engineering Graduate Student Theses & Dissertations
Metabolic modeling is an important tool to interpret the comprehensive cell metabolism and dynamic relationship between substrates and biomass/bioproducts. Genome-scale flux balance model and 13C-metabolic flux analysis are metabolic models which can reveal the theoretical yield and central carbon metabolism under various environmental conditions. Kinetic model is able to capture the complex principles between the change of biomass growth and bioproducts accumulation with the time series. Machine learning model is a data driven approach to reveal fermentation behavior and further predict cell performance under complex circumstances. In my PhD study, modeling analysis and machine learning method have been used to …