Theses and Dissertations
Feasibility of underwater friction stir welding of HY-80 steel
(Monterey, California. Naval Postgraduate School, 2011-03)
The purpose of this thesis is to determine the feasibility of underwater friction stir welding (FSW) of high-strength; quench and temper low carbon steels that are susceptible to hydrogen-assisted cracking (HAC). The ...
Laser peening for mitigation of stress corrosion cracking at welds in marine aluminum
(Monterey, California. Naval Postgraduate School, 2011-06)
This work examines the use of laser peening (LP) for mitigation of stress corrosion cracking (SCC) in marine grade aluminum alloys (Al-Mg). These alloys can be sensitized during welding and will develop a tensile residual ...
Ballistic missile intercept from UCAV
(Monterey, California. Naval Postgraduate School, 2011-12)
The objective of this thesis is to conduct a study to evaluate the feasibility of the hit-to-kill trajectory-shaping (TS) guidance of an air-launched missile from a UCAV against enemy ballistic missiles via computer ...
A study into advanced guidance laws using computational methods
(Monterey, California. Naval Postgraduate School, 2011-12)
Effective guidance laws that are optimal for tactical air-to-air scenarios tend to improve the performance characteristics of the missile and increase the probability of a hit in combat. Proportional guidance is the current ...
Electrochemical studies of passive film formation and corrosion of friction stir processed nickel aluminum bronze
(Monterey, California. Naval Postgraduate School, 2011-06)
The Navy currently uses Nickel-Aluminum Bronze (NAB) for its propellers. Friction stir processing (FSP) is a proposed method of improving the mechanical properties of NAB, and it is believed to improve the corrosion-resistive ...
Experimental study of fluid structure interaction effects on metal plates under fully developed laminar flow
(Monterey, California. Naval Postgraduate School, 2011-12)
The development of a reference test case with repeatable and accurate results is of paramount importance for the validation of numerical Fluid Structure Interaction (FSI) models and simulations. In this study, a new ...
Flow visualization and detailed load measurements over a maneuvering UCAV 1303
(Monterey, California. Naval Postgraduate School, 2011-03)
The unsteady aerodynamic performance of a maneuvering 1/72nd scale model of an unmanned combat air vehicle (UCAV) 1303 geometry has been studied in the Naval Postgraduate School water tunnel. Despite the numerous past ...
Synthesis and characterization of Al-Nanodiamond composite powders by high-energy ball milling
(Monterey, California. Naval Postgraduate School, 2011-12)
High-energy ball milling was studied for the ex situ strengthening of aluminum (Al) with nanodiamond (ND). Al-ND metal matrix composite powders with 5 wt% and 10 wt% nanodiamond were synthesized by high-energy ball milling ...
Investigation of transitional flows on compressor blades in cascade
(Monterey, California. Naval Postgraduate School, 2011-09)
Flow around polished second-generation controlled-diffusion blades in cascade set at their design inlet flow angle was investigated at various Reynolds numbers using static pressure measurements, five-hole probe surveys, ...
Low-speed wind tunnel flow quality determination
(Monterey, California. Naval Postgraduate School, 2011-09)
lected points. Incorporated instrumentation includes pressure transducers attached to a pitot-static tube, wall static pressure taps, and a pressure rake; a hotwire anemometry system, and a linear traverse system. These ...
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Mechanical Engineering (25)