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Articles 31 - 48 of 48
Full-Text Articles in Engineering
Wind Turbine Mounting Analysis, Chris Applen, Garet Miller, Ryan Jervik
Wind Turbine Mounting Analysis, Chris Applen, Garet Miller, Ryan Jervik
The Journal of Undergraduate Research
This paper analyzes the bolts and screws necessary to secure a certain wind turbine design to a silo. The analysis is divided into two major segments. First is the determination of maximum wind velocity and the resultant forces from the given wind conditions. The resultant force is determined from the dynamic pressure caused by the wind velocity and the surface area of the wind turbine blades. Second is carrying out the fatigue analysis to ensure the chosen bolts and screws will not fail. This is done through the use of a Goodman line diagram. In order for the fatigue design …
Modeling Of The Interior Electric Field In Photovoltaic Cells, Tara Jeatran
Modeling Of The Interior Electric Field In Photovoltaic Cells, Tara Jeatran
The Journal of Undergraduate Research
With the emergence of photovoltaic technologies, there is a strong technological demand for high-performance photovoltaic devices. One of the most promising device concepts developed at SDSU is organic-based photovoltaic cells. The performance of the PV cells is controlled by charge generation and charge separation, and charge transportation processes. Extraordinary control over the properties of the organic photovoltaic materials will be needed in order for this research to succeed. Therefore, the interior electric field and the macro electric properties of the system are the foundation behind these facts and are critical properties on their performance. In this paper, the fundamentals of …
Fatigue Analysis Of An Inline Skate Axel, Garrett Hansen, Mike Woizeschke
Fatigue Analysis Of An Inline Skate Axel, Garrett Hansen, Mike Woizeschke
The Journal of Undergraduate Research
In this paper, an inline skate axel is analyzed based on fatigue and economic principles for four different materials. The loading scenario on the axel of the inline skate is derived and broken down to a maximum shear stress that must be less than the maximum fatigue stress of the axel material. A fatigue analysis using Goodman line diagrams is applied to axels made of aluminum, titanium, nylon, and PVC. The material strengths are then compared to the loading requirements and determined whether they would be sufficient for an axel material. Finally, the prices are compared to verify the selection …
The Journal Of Undergraduate Research: Volume 06
The Journal Of Undergraduate Research: Volume 06
The Journal of Undergraduate Research
This is the complete issue of the South Dakota State University Journal of Undergraduate Research, Volume 6.
Erosion Function Apparatus, Ryan Larsen
Erosion Function Apparatus, Ryan Larsen
The Journal of Undergraduate Research
The Erosion Function Apparatus (EFA) test uses site-specific soil samples acquired via thin-walled tubes to generate the erosion rate and shear stress which is plotted to create an erosion plot. The information produced by the test can help an engineer accurately determine the depth of scour as a function of time for bridge design, and thereby determine the depth a foundation system should be constructed. During EFA testing, a data acquisition system records the velocity and amount of soil eroded. This data is used to calculate the Reynolds Number, friction factor, erosion rate, and shear stress. Once the data has …
Particle Motion On A Plane Slope Under Spilling Breaking Waves, Jennifer Nelson
Particle Motion On A Plane Slope Under Spilling Breaking Waves, Jennifer Nelson
The Journal of Undergraduate Research
The experiments discussed in this paper involve the motion of discrete solid particles on a plane slope under spilling breaking wave conditions. Particle Image Velocimetry was used to capture images of seeder particles in water so the motion of the fluid particles and solid particles could be traced. The images produced from the experiments have two phases. Since the behavior of the water and the sediment particles must be studied individually, the two phases of the image must be separated. A series of functions in MATLAB allows the two-phase image to be separated into two images—one containing only the sediment …
Analysis Of Wind Turbine Transverse Vibration, Matt Hein, Whitney Karpen
Analysis Of Wind Turbine Transverse Vibration, Matt Hein, Whitney Karpen
The Journal of Undergraduate Research
Large wind turbines have become an appealing choice for renewable electrical energy production throughout the world. The United States Midwest contains massive potential for wind energy development and is therefore being primed for large wind turbines to harvest this resource and bring it to market. Because of this, safety concerns have arisen in regard to their ability to withstand the harsh climate of the region. Analysis of the transverse vibration caused by severe weather will be preformed. A simplified model will allow for an analytical solution and displacement graphs produced with MATLAB code. This information will allow for an unbiased …
The Journal Of Undergraduate Research: Volume 05
The Journal Of Undergraduate Research: Volume 05
The Journal of Undergraduate Research
This is the complete issue of the South Dakota State University Journal of Undergraduate Research, Volume 5.
Dust Emission From South Dakota Cattle Feedlots, Rick Weber
Dust Emission From South Dakota Cattle Feedlots, Rick Weber
The Journal of Undergraduate Research
Dust and particle emissions (PM) from cattle feedlots is a concern for producers in order to maintain good relations with neighbors and also to comply with the EPA proposed PM2.5 particulate emission rules. Dust at 2.5 microns, which cannot be seen by the naked eye, is a potential health hazard since it can be ingested into the lungs of humans. One of the proposed regulations of the Federal Clean Air Act is to apply the PM2.5 standard to the agricultural sector. This research project examines the particulate matter dust emissions of various sizes in microns including 2.5, 10, …
Vibration Analysis Of A Boat And Dock, Annicka Gunderson
Vibration Analysis Of A Boat And Dock, Annicka Gunderson
The Journal of Undergraduate Research
A structure is designed to withstand the maximum force that will be applied. In this case a boat dock is examined as a spring system. This exercise uses a typical design for a lake side boat dock, tires for buoys, and an average fishing boat. Vibration analysis can predict when the highest forces will occur. A solution can be found to graph the motion of the dock. In addition to the analytical solution, the MATLAB program is used to visualize the vibrations. With these tools the magnitude and timing of forces can be verified.
Theoretical Exploration Of Characteristics Of Up-Conversion Materials In Photovoltaics, Joel Bordewyk
Theoretical Exploration Of Characteristics Of Up-Conversion Materials In Photovoltaics, Joel Bordewyk
The Journal of Undergraduate Research
Up-conversion materials can be used to greatly enhance the productivity of photovoltaic nanotechnologies. These materials must convert photons from a low energy to a higher energy to fit within the acceptable range of the solar panel. Software is needed to compute the value of these energy levels and to find molecules that produce these values. It must first be determined if the software has these capabilities and if the results are trustworthy. Naphthalamide has been a molecule of interest and serves as a good starting point for these studies.
Dynamical Multi-Body Gyroscopic Motion Simulation, Andy Ries, Johnathan Deppe
Dynamical Multi-Body Gyroscopic Motion Simulation, Andy Ries, Johnathan Deppe
The Journal of Undergraduate Research
In this paper, the motion of a three-degree-of-freedom gyro scope is analyzed in three different force scenarios. The equations of motion for the gyroscope are derived by hand as well as derived by the dynamical analysis software, Autolev These equations are compared with each other to show the consistency between the two methods and the time savings of using software applications for analyzing complex multi-body dynamical systems. The Autolev™ program drastically reduced the workload for determining the motion equations and the program even compiled Matlab code that was used to produce numerical values to show the respective motion of each …
Cutting Force And Temperature Prediction For Turning Processes, Brian Carstensen, Aaron Eich, Tyler Schroeder, Ryan Joens
Cutting Force And Temperature Prediction For Turning Processes, Brian Carstensen, Aaron Eich, Tyler Schroeder, Ryan Joens
The Journal of Undergraduate Research
The machining process modeling software allows researchers to run simulations of real world situations without the costs and risks of operating the machining tool and mining a work piece or cutting tool.We ran several simulations with combinations of high speed steel, carbide, and cubic-boron-nitride for our tool materials, and 1045 steel, 15-5PH, or Inconel 718 for workpiece material options. The numerical simulations or experiments assumed physical, mechanical, and thermal properties representative of work-piece materials and tool material. Cutting forces were determined in the numerical simulations.
The Journal Of Undergraduate Research: Volume 04
The Journal Of Undergraduate Research: Volume 04
The Journal of Undergraduate Research
This is the complete issue of the South Dakota State University Journal of Undergraduate Research, Volume 4.
Economic Evaluation Of Integrating Biodiesel Production With A Dry Mill Ethanol Plant, Steven Bly
Economic Evaluation Of Integrating Biodiesel Production With A Dry Mill Ethanol Plant, Steven Bly
The Journal of Undergraduate Research
Biodiesei is produced by adding methyl ester products to diesel fuel. Base catalyzed transesterification of oil with methanol is the primary process used today. Current dry mill ethanol production facilities allow the com oil to pass through the process where it becomes part of the dried distiller's grain with solubles (DDGS), a lower valued feed co-product. This study evaluated the economic feasibility of integrating a biodiesel production facility with existing and/or new dry mill ethanol plants. The following methods for com oil separation were considered; hexane extraction of com oil from the dried distiller's grain stream, initial germ separation and …
Virtual Prototype Of Shuttle Bay Door, Nick Harrington, Raphael Schulz, Pierre Chapron
Virtual Prototype Of Shuttle Bay Door, Nick Harrington, Raphael Schulz, Pierre Chapron
The Journal of Undergraduate Research
This study analyzed the motion of the Space Shuttle free floating in space after one of its bay doors is opened and closed. Kane's method and Autolev motion simulation software were used to carry out simulation and analysis. The Space Shuttle has two large bay doors that open simultaneously, but for our study we analyzed a hypothetical situation, in which only one door functioned properly, in order to achieve amplified results. To model this system we used a rigid body to resemble the Shuttle and an attached rotating flap to resemble the door. Since the Shuttle is free floating in …
Optimal Spacings For Two Common Landscape Irrigation Sprinklers, Kody L. Karschnik
Optimal Spacings For Two Common Landscape Irrigation Sprinklers, Kody L. Karschnik
The Journal of Undergraduate Research
A simple irrigation system providing sufficient watering needed to make a plant grow is not very difficult. However, to set up a system which provides uniform distribution of water is more difficult. Uniformity coefficients such as Distribution Uniformity and Christiansen coefficient of Uniformity can be used to compare systems and layouts. After measuring the distribution of water from a single sprinkler, a densogram is created with software. The densogram is a numerical and graphical representation of the overlap pattern that the sprinklers create on a given area of surface that is being irrigated. By varying the distance between the sprinklers …
The Journal Of Undergraduate Research: Volume 03
The Journal Of Undergraduate Research: Volume 03
The Journal of Undergraduate Research
This is the complete issue of the South Dakota State University Journal of Undergraduate Research, Volume 3.