Barrett, The Honors College Thesis/Creative Project Collection
Barrett, The Honors College at Arizona State University proudly showcases the work of undergraduate honors students by sharing this collection exclusively with the ASU community.
Barrett accepts high performing, academically engaged undergraduate students and works with them in collaboration with all of the other academic units at Arizona State University. All Barrett students complete a thesis or creative project which is an opportunity to explore an intellectual interest and produce an original piece of scholarly research. The thesis or creative project is supervised and defended in front of a faculty committee. Students are able to engage with professors who are nationally recognized in their fields and committed to working with honors students. Completing a Barrett thesis or creative project is an opportunity for undergraduate honors students to contribute to the ASU academic community in a meaningful way.
Displaying 1 - 3 of 3
Description
This paper describes the development of a software tool used to automate the preliminary design of aircraft wing structure. By taking wing planform and aircraft weight as inputs, the tool is able to predict loads that will be experienced by the wing. An iterative process is then used to select optimal material thicknesses for each section of the design to minimize total structural weight. The load analysis checks for tensile failure as well as Euler buckling when considering if a given wing structure is valid. After running a variety of test cases with the tool it was found that wing structure of small-scale aircraft is predominantly buckling driven. This is problematic because commonly used weight estimation equations are based on large scale aircraft with strength driven wing designs. Thus, if these equations are applied to smaller aircraft, resulting weight estimates are often much lower than reality. The use of a physics-based approach to preliminary sizing could greatly improve the accuracy of weight predictions and accelerate the design process.
ContributorsKolesov, Nikolay (Author) / Takahashi, Timothy (Thesis director) / Patel, Jay (Committee member) / Kosaraju, Srinivas (Committee member) / Mechanical and Aerospace Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2019-12
Description
Air travel has become increasingly popular, becoming the preferred and most efficient method of travel throughout the years. With air travel projected to double within the next 20 years, more people than ever will be utilizing this form of travel. However, an increased demand requires an equivalent increase of security and safety. Many individuals have pondered this concept in an effort to better understand the corrective action in store following two deadly crashes that killed over 300 people. Are the airlines and aerospace manufacturers able to ensure a specific safety standard across all aircraft models and is this enough to reassure the public? Boeing, one of the industry’s leaders in aerospace manufacturing, found itself at the forefront of this movement for safety after the tragic system failures of its aircraft, the Boeing 737 MAX 8.
This report has been curated in an effort to highlight the injustices and oversights that have occurred throughout the course of the Boeing Crisis. These have formed during the early stages of designing, manufacturing, and integration process of the Boeing 737 MAX 8. The coverage and investigation that this crisis received was not cumulative of all factors that contributed to the failure of the aircraft to perform as designed while in flight. With many official reports from Boeing and the FAA being insufficient in both scope and detail of the crashes, this report will highlight the integral details that should play a larger role in the future manufacturing processes of aircrafts.
This report has been curated in an effort to highlight the injustices and oversights that have occurred throughout the course of the Boeing Crisis. These have formed during the early stages of designing, manufacturing, and integration process of the Boeing 737 MAX 8. The coverage and investigation that this crisis received was not cumulative of all factors that contributed to the failure of the aircraft to perform as designed while in flight. With many official reports from Boeing and the FAA being insufficient in both scope and detail of the crashes, this report will highlight the integral details that should play a larger role in the future manufacturing processes of aircrafts.
ContributorsHermling, Christina (Co-author) / Hermling, Elena (Co-author) / Wong, Kelvin (Thesis director) / Patel, Jay (Committee member) / Department of Economics (Contributor) / Dean, W.P. Carey School of Business (Contributor) / Department of Information Systems (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
In this conference paper, nanoscale material property data and ASTM mode I interlaminar fracture results for three-phase buckypaper samples are presented and analyzed. Vacuum filtration and surfactant-free methods were used to manufacture buckypaper membranes. Epoxy infused buckypaper membranes were placed in front of the crack tip in a stitch bonded carbon fiber polymer matrix composite using a hand layup technique. Peak Force Quantitative Nanomechanical Mapping (PFQNM), using probes with nominal tip radius in the range of 5 to 8 nm were used. PFQNM fully characterized the interphase region between a three-phase sample of carbon monofilament, epoxy resin, and multi-walled carbon nanotube (MWCNT) buckypaper. This experiment captured reproducible nanoscale morphological, viscoelastic, elastic and energy properties of porous MWCNT buckypaper samples. An enlarged interphase region surrounding the CNT buckypaper was found. The buckypaper and epoxy interphase thickness was found to be 50nm, higher than the 10-40nm reported for epoxy and carbon monofilaments. The observed MWCNT structure provides explanation of the increased surface roughness compared to the smooth carbon monofilaments. The increased surface roughness likely improves mechanical interlocking with the epoxy of adjacent lamina. The interphase and subsurface characterization data at the nanoscale level provide explanation for a change in crack propagation toughness. Nanoscale analysis of the buckypaper surface proved the inhomogeneous properties even at the scale of a few square micrometer. The improvement in crack initiation and propagation energy is due to mechanical interlocking, crack path diversion, and the large interphase zone surrounding the buckypaper.
ContributorsMester, Jack (Author) / Yekani Fard, Masoud (Thesis director) / Patel, Jay (Committee member) / Mechanical and Aerospace Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05