Matching Items (3)
Description
This thesis encompasses research performed in the focus area of structural health monitoring. More specifically, this research focuses on high velocity impact testing of carbon fiber reinforced structures, especially plates, and evaluating the damage post-impact. To this end, various non-destructive evaluation techniques such as ultrasonic C-scan testing and flash thermography were utilized for post-impact analysis. MATLAB algorithms were written and refined for the localization and quantification of damage in plates using data from sensors such as piezoelectric and fiber Bragg gratings sensors. Throughout the thesis, the general plate theory and laminate plate theory, the operations and optimization of the gas gun, and the theory used for the damage localization algorithms will be discussed. Additional quantifiable results are to come in future semesters of experimentation, but this thesis outlines the framework upon which all the research will continue to advance.
ContributorsMccrea, John Patrick (Author) / Chattopadhyay, Aditi (Thesis director) / Borkowski, Luke (Committee member) / Barrett, The Honors College (Contributor) / Mechanical and Aerospace Engineering Program (Contributor) / Department of Military Science (Contributor)
Created2015-05
Description
Unmanned Aerial Vehicles, more commonly referred to as drones, have been a hot subject for the past few years. In the news, stories about drones cause the public alarm because of their seemingly increasing use. Problems have arisen with drones congesting airspace where manned aircraft fly, posing a huge threat to pilots and passengers of those aircraft. They have also caused concern of the public in matters of privacy. Drones are a go-anywhere and see-anything type of tool. They go where manned aircraft cannot, and where humans on the ground cannot. This video takes an in depth look at the issue of increasing civilian drone use, new regulations on users, categorizing types of drones, and possible solutions to the problems. Throughout the video, there will be three interviews. These interviews will be with experts in the field. The first person is Dr. Sarah Nilsson, Esq. She is a lawyer in drone law with her own practice. She has her PhD, CFI, and CFII as well as professional flying experience. The second person is Mr. Chris Andres. He is the Airport Administrator of Chandler Municipal Airport and offers a unique perspective on drones from an airport management standpoint. Lastly, the third person interviewed is a salesman at Viper Hobbies located in Mesa, AZ. He offers a perspective of drone use from the retail side, and also insight in FAA requirements of retailers and how retailers might offer education on regulation to the public.
ContributorsKataria, Sunil (Co-author) / Wren, Nicholas (Co-author) / Kimberly, Jimmy (Thesis director) / Nullmeyer, Robert (Committee member) / School of Life Sciences (Contributor) / Department of Military Science (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
This work examines one dimension of the effect that complex human transport systems have on the spread of Chikungunya Virus (CHIKV) in the Caribbean from 2013 to 2015. CHIKV is transmitted by mosquitos and its novel spread through the Caribbean islands provided a chance to examine disease transmission through complex human transportation systems. Previous work by Cauchemez et al. had shown a simple distance-based model successfully predict CHIKV spread in the Caribbean using Markov chain Monte Carlo (MCMC) statistical methods. A MCMC simulation is used to evaluate different transportation methods (air travel, cruise ships, and local maritime traffic) for the primary transmission patterns through linear regression. Other metrics including population density to account for island size variation and dengue fever incidence rates as a proxy for vector control and health spending were included. Air travel and cruise travel were gathered from monthly passenger arrivals by island. Local maritime traffic is approximated with a gravity model proxy incorporating GDP-per-capita and distance and historic dengue rates were used for determine existing vector control measures for the islands. The Caribbean represents the largest cruise passenger market in the world, cruise ship arrivals were expected to show the strongest signal; however, the gravity model representing local traffic was the best predictor of infection routes. The early infected islands (<30 days) showed a heavy trend towards an alternate primary transmission but our consensus model able to predict the time until initial infection reporting with 94.5% accuracy for islands 30 days post initial reporting. This result can assist public health entities in enacting measures to mitigate future epidemics and provide a modelling basis for determining transmission modes in future CHIKV outbreaks.
ContributorsFries, Brendan F (Author) / Perrings, Charles (Thesis director) / Wilson Sayres, Melissa (Committee member) / Morin, Ben (Committee member) / School of Life Sciences (Contributor) / Department of Military Science (Contributor) / Barrett, The Honors College (Contributor)
Created2015-12