Theses and Dissertations
Fluid-structure interaction in composite structures
(Monterey, California: Naval Postgraduate School, 2014-03)
In this research, dynamic characteristics of polymer composite beam and plate structures were studied when the structures were in contact with water. The effect of fluid-structure interaction (FSI) on natural frequencies, ...
Systematic review of UIT parameters on residual stresses of sensitized AA5456 and field based residual stress measurements for predicting and mitigating stress corrosion cracking
(Monterey, California: Naval Postgraduate School, 2014-03)
This thesis focuses on the use of x-ray diffraction to measure residual stresses around welds in aluminum ship structures both in the laboratory and in the field. Tensile residual stresses are often generated during welding ...
On the numerical solution of the integral equation formulation for transient structural synthesis
(Monterey, California: Naval Postgraduate School, 2014-09)
Structural synthesis is the analysis of the dynamic response of a system when either subsystems are combined (substructure coupling) or modifications are made to substructures (structural modification). The integral equation ...
An assessment of hydrogen as a means to implement the United States Navy's renewable energy initiative
(Monterey, California: Naval Postgraduate School, 2014-09)
In response to Presidential Executive Order 13514, the Secretary of the Navy established the 1GW Task Force to meet theNavy's goal of producing at least half of shore-based energy requirements from alternative energy ...
Turning vanes in exhaust duct flow: study for energy efficiency, optimization and pressure drop mitigation
(Monterey, California: Naval Postgraduate School, 2014-09)
This thesis presents a computational fluid dynamics (CFD) study on the effects of turning vanes and their placement in an exhaust duct with a sharp bend of ninety degrees and the application toward waste heat recovery ...
A methodology for multidisciplinary decision making for a surface combatant main engine selection problem
(Monterey, California: Naval Postgraduate School, 2014-06)
In the ship design process, delivering optimum performance while reducing development and construction costs are key considerations. A great amount of optimization effort should be done before progressing on a project. ...
Hydrodynamic forces on composite structures
(Monterey, California: Naval Postgraduate School, 2014-06)
Using a tow tank environment an experiment was set up to measure for response of composite samples of varying stiffness to a geometrically comparable more rigid aluminum sample which was tested at increasing speeds. Also, ...
Hot thermal storage in a variable power, renewable energy system
(Monterey, California: Naval Postgraduate School, 2014-06)
This thesis outlines the design of a renewable energy heat generation system with thermal storage for DOD facilities. The DOD is seeking to implement an increased percentage of renewable energy systems at its facilities ...
Development of carbon nanotube-based sensor to monitor crack growth in cracked aluminum structures underneath composite patching
(Monterey, California: Naval Postgraduate School, 2014-06)
This paper presents the design of a carbon nanotube-based sensor to detect crack propagation in aluminum structures underneath composite patching. Initial tests are utilized to determine the correct procedure and materials ...
Finite element and analytical analysis of cracks in thick stiffened plates repaired with a single–sided composite patch
(Monterey, California: Naval Postgraduate School, 2014-06)
The purpose of this thesis was to investigate crack growth behavior in thick stiffened aluminum plates repaired with a single-sided composite patch. A model was developed using finite element analysis that extracted the ...
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