The need for cleaner, renewable energy is at a high demand as our world is at a critical point in changing the way in which we source our energy. Petroleum, coal, and natural gas are becoming less relevant. Energy sources such as solar, wind, and geothermal energy are becoming more resource-able and dependable options. As we, as a society, become more cautious as to how we take care of our planet, we must continue to look into renewable energy sources. Tidal wave energy has been a concept some companies and governments have been researching into. Tidal wave energy has been used for over a thousand years, originally used to operate grain mills in Europe. It is important as a society to understand how we resource and collect our energy sources, as we lean away from nonrenewable sources to more eco-friendly options. Having a deep understanding of how the system in place works allows society to better alter and adapt its use to better fit our needs. How tidal wave energy is collected and stored, for the most part, follows the same pattern/structure for all companies. Wave energy converters capture the tidal wave energy and are then converted into electricity. This electricity can then be put into the grid system, being able to power households. However, how tidal wave energy platforms are created can have a relatively big range in their design. Designing a tidal wave system that maximizes the amount of energy collected, while also limiting harm to sea-life, will allow for greater ways to support the energy needed for human purposes as nonrenewable energy begins to phase out of many industries. The intent for this thesis research paper is to dive into the mathematical analysis such as static and theoretical stress analysis for an offshore single body point absorber. Due to design limitations, the design for this thesis paper will be purely conceptual. Therefore, this design is analyzed purely for the intent to demonstrate mathematical findings for the gear and shaft system and understanding its potential limitations within the design. From the research and mathematical analysis, specific measurements and forces were calculated in order to determine what is needed to ensure no failure occurs within the system and the energy is collected for potential use.

Traumatic brain injuries and the effects they can bring are becoming the main focus among researchers and physicians. Cycling is the leading sport with the most traumatic brain injuries, but the design of the cycling helmet has stayed the same for decades now. The technology of a bike is constantly getting developed and testing but the helmet is lagging behind. This project consists of designing and testing different cycling helmets through ANSYS simulations to determine the ideal geometry and features a cycling helmet must include, reducing the stress that the head experiences upon impact during a fall.

The goal of this was to identify the most important characteristic for racquetball players to consider when purchasing a new racquet to maximize satisfaction. Currently companies showcase their special patented technology without addressing the specifics individual players are looking for. Looking past the patents this thesis wanted to find a single racquet property by which players can base their purchase decisions on according to their preferences. This quality was determined by which differed the most between different racquets. Racquets tested were taken from the Arizona State University Club Racquetball team as well as a lower quality racquet from the fitness center storage. In the end swing weight was determined to be the most varied property in the racquet which is developed from using balance and total mass.

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.