Theses and Dissertations
ANALYSIS OF WAVE-INDUCED FORCING ON A SUBMERGED BODY AT VARIOUS PITCH ANGLES
(Monterey, CA; Naval Postgraduate School, 2020-06)
This experiment aimed to quantify the effect of pitch angle on the linear and nonlinear wave-loading of a submerged, cylindrical body. The lower-frequency nonlinear loads that occur in a multi-component seaway were also ...
OXIDATION BEHAVIOR OF OXIDE PARTICULATE REINFORCED TITANIUM COMPOSITES FABRICATED BY SELECTIVE LASER MELTING
(Monterey, CA; Naval Postgraduate School, 2020-06)
This thesis project mixed additive manufacturing (AM) feedstock powders of Ti-6Al-4V with 1% and 3% by volume reinforcements of Al2O3 and Ta2O5. These powders were printed using the MAE selective laser melting (SLM) printer, ...
COMPUTATIONAL FLUID DYNAMICS MODELING OF A SUBMERGED BODY IN A TOW TANK WITH WAVE GENERATION
(Monterey, CA; Naval Postgraduate School, 2020-06)
A computational fluid dynamics (CFD) model of the NPS tow tank with wave generation and a submerged body was created to investigate different methods of solid body modeling using commercial CFD software ANSYS CFX. A ...
COLD SPRAYED COATINGS WITH DUAL NANOPARTICLE REINFORCEMENTS FOR WEAR AND CORROSION PROTECTION
(Monterey, CA; Naval Postgraduate School, 2020-06)
As a form of additive manufacturing, the use of cold spray has made significant strides since different-sized particles were explored in the process. There is proof that micron-sized particles down to nanoparticles enhance ...
LOW-COST, DISPOSABLE MEMS RADIATION DETECTORS USING GAMMA-SENSITIVE POLYMERS
(Monterey, CA; Naval Postgraduate School, 2020-06)
Micro-electrical mechanical systems (MEMS) radiation detectors can be used in a variety of fields, such as medicine, homeland security, and the nuclear power industry, and for a variety of applications, such as environmental ...
FORWARD-LOOKING SONAR SIMULATION MODEL FOR ROBOTIC APPLICATIONS
(Monterey, CA; Naval Postgraduate School, 2020-09)
Underwater simulators are less common due to the complexity of underwater acoustics. Simulation is an effective tool for rapid testing of autonomous vehicles and complements the test and evaluation process. The goal of ...
FAILURE OF COMPOSITE PLATES SUBJECTED TO SHOCK LOADING
(Monterey, CA; Naval Postgraduate School, 2020-12)
Underwater explosions and their associated devastating effects are not new to the U.S. Navy. Accurately modeling and scaling them for research and development, however, are areas in need of further study as large explosions ...
CARBON NANOTUBE REINFORCEMENT IN COMPOSITE CYLINDERS
(Monterey, CA; Naval Postgraduate School, 2020-12)
High specific strength and stiffness properties of carbon fiber composite cylinders make them an ideal material for internal pressure and blast applications. While previous research investigates failure loading and modes ...
AN INTEGRATED SIMULATION APPROACH FOR AUV IMAGE-BASED SLAM NAVIGATION
(Monterey, CA; Naval Postgraduate School, 2021-12)
This thesis develops a simulation framework for undersea feature-based navigation. Using an autonomous underwater vehicle (AUV) to locate an item of interest on the seafloor is a capability that would greatly benefit the ...
DESIGN, DEVELOPMENT, AND FLIGHT TESTING OF A MODULAR AVIONICS AND VEHICLE MONITORING SYSTEM
(Monterey, CA; Naval Postgraduate School, 2021-12)
As more rocket components become commercially available, the feasibility of a low-cost rocket-powered vehicle with capabilities tailored to the needs of the Navy, such as delivering payloads, countering drones, and reliable ...
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Mechanical Engineering (91)