Theses and Dissertations
Hydrodynamic drag force measurement of a functionalized surface exhibiting superhydrophobic properties
(Monterey, California: Naval Postgraduate School, 2016-12)
With superhydrophobic properties being extended to a variety of metallic substrates through the process of ablation due to femto-second laser surface processing (FLSP), it is important to understand the hydrodynamic benefits ...
Numerical analysis of ice impacts on azimuth propeller
(Monterey, California: Naval Postgraduate School, 2013-09)
Incorporating an azimuth/podded propulsion into an ice-capable ship brings concern in the propellers durability and lifecycle. An ice impact model was constructed to have a better understanding of collisions occurring ...
Fluid Structure Interaction Effects on Composites Under Low Velocity Impact
(Monterey, California. Naval Postgraduate School, 2012-06)
In this study composite materials were tested in different fluid environments to determine the role of Fluid Structure Interaction with these composites under a lower velocity impact. The purpose of this research is to ...
The Influence of Shock-Induced Air Bubble Collapse resulting from Underwater Explosive Events
(Monterey, California. Naval Postgraduate School, 2012-06)
During an underwater explosion (UNDEX) event, a cavitation zone is created which alters the shockwave propagation parameters through this region. A cavitation zone is generally comprised of air bubbles whose material ...
Investigation of an explicitly modeled solid ocean floor on a shallow water UNDEX event
(Monterey, California. Naval Postgraduate School, 2011-09)
Current practices for modeling the ocean floor in underwater explosion simulations call for application of an inviscid fluid with soil properties. A method for modeling the ocean floor as a Lagrangian solid, vice an Eulerian ...
Numerical analysis of shear thickening fluids for blast mitigation applications
(Monterey, California. Naval Postgraduate School, 2011-12)
Improvised Explosive Devices (IEDs) have evolved over the years to become one of the main causes of casualties and fatalities in recent conflicts. One area of research focuses on the improvement of blast attenuation using ...
Dynamic response of composite structures underwater
(Monterey, California: Naval Postgraduate School, 2013-09)
This paper presents a comparison of the dynamic response of composite structures that are subjected to low velocity impacts while being suspended both in air, and submerged in water. As the U.S. Navy continues to use larger ...
Dynamic response of a catamaran-hull ship subjected to underwater explosions
(Monterey, California. Naval Postgraduate School, 2006-12)
E) requirements for the lead ship of each new construction shock-hardened ship class. While those trials are necessary in order to evaluate the vunerability and survivability of the ship, they are very expensive, require ...
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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Didoszak, Jarema M. (58)
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Mechanical Engineering (58)