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- All Subjects: 19765
- Creators: Mechanical and Aerospace Engineering Program
- Creators: School of Art
- Resource Type: Text
Description
The exhaust system is an integral part of any internal combustion engine. A well- designed exhaust system efficiently removes exhaust gasses expelled from the cylinders. If tuned for performance purposes, the exhaust system can also exhibit scavenging and supercharging characteristics. This project reviews the major components of an exhaust system and discusses the proper design techniques necessary to utilize the performance boosting potential of a tuned exhaust system for a four-stroke engine. These design considerations are then applied to Arizona State University's Formula SAE vehicle by comparing the existing system to a properly tuned system. An inexpensive testing method, developed specifically for this project, is used to test the effectiveness of the current design. The results of the test determined that the current design is ineffective at scavenging neighboring pipes of exhaust gasses and should be redesigned for better performance.
ContributorsKnutsen, Jeffrey Scott (Author) / Huang, Huei-Ping (Thesis director) / Steele, Bruce (Committee member) / Barrett, The Honors College (Contributor) / Mechanical and Aerospace Engineering Program (Contributor)
Created2014-05
Description
The purpose of this project was to design a new railroad crossing for pedestrians and bicyclists in mid-block or urban areas. In order to develop a successful design, the needs of the railroad, the end-users, and the city governments were researched and converted into measurable engineering requirements. For the railroad companies, the most important need was a crossing that presents an effective barrier to users while a train is in the area. For bicyclists and pedestrians (the end-users), the most important need was for the crossing to be both reliable and easily accessible. For the city governments, the most important need was a crossing that is inexpensive yet sturdy. The approach to this project was similar to the approach used in many engineering design processes. First is the Introduction, which provides an overview of the issue and presents the full problem statement. Next is the Research of Prior Art, which details the past solutions to railroad crossings as well as the 3 E's of railroad crossing safety. After this, the customer needs are discussed in the Needs to Requirements section and the process of converting these into measurable engineering requirements is shown. Next, various conceptual design options are shown in the Conceptual Design section and a final conceptual design is chosen based on adherence to the stated requirements. This final conceptual design is then taken into the preliminary design phase and refined until it becomes the final preliminary design. After the Final Preliminary Design Description, the Project Conclusions and Recommendations are presented. Due to time and monetary constraints, this project ends after the preliminary design stage. Despite this, the conclusion of this project is that the final design presented here will be successful if additional resources are obtained to move it forward into the detailed design phase. For now, this project has come to a halt due to UP's reluctance to allow any additional railroad crossings in the Phoenix and Tempe, Arizona areas. It is recommended that city officials and bicyclist/pedestrian action groups continue talks with UP until they agree to allow additional crossings to be built that are geared towards non-motorized users.
ContributorsJones, Mitchell Drexel (Author) / Kuby, Michael (Thesis director) / Lou, Yingyan (Committee member) / Barrett, The Honors College (Contributor) / Mechanical and Aerospace Engineering Program (Contributor)
Created2015-05
Description
This study looked at college-age students' ability to comprehend and retain information learned from news articles depending on what platform they read from. Fifteen participants read three local New York Times articles on each of the platforms provided: iPad, laptop, and paper. They took one test immediately after to test comprehension and another two weeks later to test their retention. Participants were also asked if they found the articles interesting, enjoyable, clear, etc. Results showed that participants' views on each format had little, if any, affect on their number of correct responses. The most consistent results on the participants' perceptions of the formats came from the laptop and paper, whereas the iPad received a bimodal pattern of responses. Participants were also asked to share their news habits while taking the test by selecting how frequently they gain news from various sources such as social media or television. These habits also seemed to have very little effect on their scores.
ContributorsKillin, Jamie Faye (Author) / Gilpin, Dawn (Thesis director) / Russomanno, Joseph (Committee member) / Dodge, Nancie (Committee member) / Barrett, The Honors College (Contributor) / Walter Cronkite School of Journalism and Mass Communication (Contributor) / School of Art (Contributor)
Created2014-05
Description
In this paper, it is determined that learning retention decreases with age and there is a linear rate of decrease. In this study, four male Long-Evans Rats were used. The rats were each trained in 4 different tasks throughout their lifetime, using a food reward as motivation to work. Rats were said to have learned a task at the age when they received the highest accuracy during a task. A regression of learning retention was created for the set of studied rats: Learning Retention = 112.9 \u2014 0.085919 x (Age at End of Task), indicating that learning retention decreases at a linear rate, although rats have different rates of decrease of learning retention. The presence of behavioral training was determined not to have a positive impact on this rate. In behavioral studies, there were statistically significant differences between timid/outgoing and large ball ability between W12 and Z12. Rat W12 had overall better learning retention and also was more compliant, did not resist being picked up and traveled more frequently at high speeds (in the large ball) than Z12. Further potential studies include implanting an electrode into the frontal cortex in order to compare neuro feedback with learning retention, and using human subjects to find the rate of decrease in learning retention. The implication of this study, if also true for human subjects, is that older persons may need enhanced training or additional refresher training in order to retain information that is learned at a later age.
ContributorsSpinrad, Amelia (Author) / Si, Jennie (Thesis director) / Thompson, Patrick (Committee member) / Ma, Weichao (Committee member) / Barrett, The Honors College (Contributor)
Created2014-05
Description
This study looked at college-age students' ability to comprehend and retain information learned from news articles depending on what platform they read from. Fifteen participants read three local New York Times articles on each of the platforms provided: iPad, laptop, and paper. They took one test immediately after to test comprehension and another two weeks later to test their retention. Participants were also asked if they found the articles interesting, enjoyable, clear, etc. Results showed that participants' views on each format had little, if any, affect on their number of correct responses. The most consistent results on the participants' perceptions of the formats came from the laptop and paper, whereas the iPad received a bimodal pattern of responses. Participants were also asked to share their news habits while taking the test by selecting how frequently they gain news from various sources such as social media or television. These habits also seemed to have very little effect on their scores.
ContributorsKillin, Jamie Faye (Author) / Gilpin, Dawn (Thesis director) / Russomanno, Joseph (Committee member) / Dodge, Nancie (Committee member) / Barrett, The Honors College (Contributor) / Walter Cronkite School of Journalism and Mass Communication (Contributor) / School of Art (Contributor)
Created2014-05
Description
The paper presents a new exhaust header design to replace the current design on Arizona State University's Formula SAE car. Also, the thought process of the design was presented as well as a method of analysis for tuning the exhaust headers. The equation presented was then compared with a computational fluid dynamics model using ANSYS Fluent. It was found that the equation did not match the timing of the CFD model. However, the design does allow for simple changes to be made in order to reduce the length of the exhaust and allow for the correct tuning. Also, the design minimizes interference between the individual headers which is ideal to increase engine performance. The exhaust meets the Formula SAE regulations, and is designed to fit in the new chassis for the FSAE car that ASU will run in 2015. Recommendations were also made to further improve the design and analysis model.
ContributorsKaashoek, Kevin Jason (Author) / Huang, Huei-Ping (Thesis director) / Trimble, Steven (Committee member) / Barrett, The Honors College (Contributor) / Mechanical and Aerospace Engineering Program (Contributor)
Created2014-05
Description
Screen printed textiles formed into over-sized pillows and wall hangings encompass the viewer just as emotions and memories envelope a person's state of being. Pillows representing three generations are staged in small vignettes created by found and restored antiques to surround the viewer in a tangible representation of the intimacy one feels with important figures in a lifetime.
ContributorsEhlenz, Ariel Magdalene (Author) / Verstegen, Clare (Thesis director) / Brandt, Beverly (Committee member) / Hanson, Erika (Committee member) / Barrett, The Honors College (Contributor) / School of Art (Contributor)
Created2013-12
Description
In this study, a scissor jack was structurally analyzed and compared to a FEA model to study the structure of the jack. the system was simplified to a 2D system, and one of the truss members was analyzed for yielding, fatigue, and buckling.
ContributorsLedalla, Aishwarya (Author) / Kosaraju, Srinivas (Thesis director) / Patel, Jay (Committee member) / Mechanical and Aerospace Engineering Program (Contributor, Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
Description
Immersion has become a key buzzword in the theme park industry, with many themed lands and attractions being designed with this objective in mind. This paper defines immersion through the concept of the ironic imagination and examines its role in theme park attractions. A literature review was first conducted to identify general design principles for the creation of immersive theme park attractions. Authentic settings that utilize all of the senses were considered first, along with a system of positive and negative cues for evaluating immersive experiences. The importance of simple and emotional stories was also addressed, before investigating the role that employees and guests play in an immersive attraction. Eight design principles were identified, and using these principles a blue sky design for an immersive theme park attraction was developed. An overview of the attraction is included and accompanied by an analysis of how the design principles were applied.
ContributorsWisnom, Scott Hunter (Author) / Roscoe, Rod (Thesis director) / Craig, Scotty D. (Committee member) / Historical, Philosophical & Religious Studies (Contributor) / Historical, Philosophical & Religious Studies, Sch (Contributor) / Mechanical and Aerospace Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
DescriptionThrough artist book, printed photographs, paintings, writing, and web design, August Tang deconstructed their identity as a nonbinary person. Both educational and expressive, the creative project was a manifestation of a coming out journey, affirmation of gender identity, and experiences relating to gender with friends, family, and strangers.
ContributorsTang, August B (Author) / Button, Melissa (Thesis director) / Sanft, Alfred (Committee member) / School of Art (Contributor) / Dean, W.P. Carey School of Business (Contributor) / The Design School (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05