Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 436 for “"pressurized"”.
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Controlled externally pressurized bearings
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1960.
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Analysis of Pressurized Arch-Shells
A pressurized arch-shell structural component made of flexible material is considered. The component is inflated with high internal pressure. The behavior of similar types of structures, such as a pair of leaning pressurized arches and pressurized arch-supported membrane shelters, has been …
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Actinide minimization using pressurized water reactors
Transuranic actinides dominate the long-term radiotoxity in spent LWR fuel. In an open fuel cycle, they impose a long-term burden on geologic repositories. Transmuting these materials in reactor systems is one way to ease the long-term burden on the repository. Examining the maximum possible …
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Fatigue Characteristics of Pressurized Artificial Muscles
Pressurized artificial muscles show promise in both standard aircraft actuation operations and in morphing structures as an alternative to currently used actuation systems due to their high power-to-weight ratio. Pressurized artificial muscles have already demonstrated the necessary force …
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Compressible Lubrication Theory in Pressurized Gases
Lubrication theory plays a fundamental role in all mechanical design as well as applications to biomechanics. All machinery are composed of moving parts which must be protected against wear and damage. Without effective lubrication, maintenance cycles will be shortened to impractical levels …
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Pressurized Metal Bellows Shock Absorber for Space Applications.
… science equipment. Leakage is also a concern in pressurized systems in space because missions can take decades from when a system is installed to when it actually is used. To address these issues, a pressurized metal bellows shock absorber is proposed. This shock absorber could operate at nearly …
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Bonded structures for enhanced damage tolerant pressurized fuselages
… purpose of investigating solutions applicable to pressurized fuselages. The large test campaign (for a total of 35 stiffened panels) has quantitatively investigated the role of the different metallic skin concepts (monolithic vs. MLs) of the aluminum, titanium and glass-fiber reinforcements, of …
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The catastrophic failure of pressurized graphite/epoxy cylinders
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1982.
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Optimization of hydride fueled pressurized water reactor cores
… thermal hydraulic and economic analyses for pressurized water reactor (PWR) cores utilizing UZrH₁.₆ and UO₂. A previous MIT study established the steady-state thermal hydraulic design methodology for determining maximum power from square array PWR core designs.
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Pathways for mechanotransduction in pressurized airway epithelial cells
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2001.
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An inverted hydride-fueled pressurized water reactor concept
Previous studies conducted at MIT showed that power performance of typical pin geometry PWRs are limited by three main constraints: core pressure drop, critical heat flux (CHF) and fretting phenomena of the fuel rods against grid spacers. The present work investigates the possibility to reduce the …
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Multi-variable optimization of pressurized oxy-coal combustion
… is performed on a 300 MWe wet-recycling pressurized oxy-coal combustion process with carbon capture and sequestration. The model accounts for realistic component behavior such as heat losses, steam leaks, pressure drops, cycle irreversibilities, and other technological and economical …
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Dynamics and Control of a Pressurized Optical Membranes
… are developed to describe the dynamics of a pressurized optical membrane system. This is done through an impedance based modeling approach where the subsystems are modeled individually, and then coupled at the interface. The control of the membrane is implemented using a positive position …
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A study of the behaviour of pressurized piping elbows
The behaviour of piping elbows under bending and internal pressure is more complicated than expected. The main problem is that the coupling of bending and internal pressure is non-linear; stress and displacement cannot be added according to the principle of superposition. In addition, internal …
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Design and analysis of a Non-Pressurized Manned Submersible
Non-Pressurized Manned Submersibles (NPMS) have proven their utility in warfare for centuries, demonstrating an unmatched combination of simplicity and versatility in both declared conflicts and undeclared, covert operations. Today, the SEAL Delivery Vehicle (SDV) Mk8 Mod1 remains the United States …
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The design of a fabric for a pressurized suit
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1959.
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Transient analysis of hydride fueled pressurized water reactor cores
… power given specific transient conditions for pressurized water reactors (PWR) loaded with either U02 or UZrH1.6 fuel. Several geometries have been examined with the VIPRE subchannel analysis tool along with MATLAB scripts previously developed to automate VIPRE execution. The transients …
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Response and Failure of Internally Pressurized Elliptical Composite Cylinders
… developed to study the response of internally pressurized elliptical composite cylinders with clamped boundaries. Using a geometrically linear analysis and the solution scheme, the response of a quasi-isotropic elliptical cylinder is compared with the response of a quasi-isotropic circular …
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An alternate high pressure injection system for pressurized-water reactors
… to a major rupture in the primary system of a pressurized water reactor (PWR), tests were conducted using the thermal-hydraulic computer code RELAP4/MOD5.</p> <p>The results for the overall plant system show that the maximum core average fuel cladding temperature reached during an intermediate …
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