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 6 of 6 for “"Dynamic sealing"”.
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Hydraulic amplification for actuation in microelectromechanical systems
… micron-size channels was performed. Static sealing techniques for leak-free sealing of micromachined, filled dead volumes with minimal seal compression and dynamic sealing techniques when quasi-static actuation is not a prerequisite were successfully developed. Using these techniques, …
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Design and optimization of micropumps using electrorheological and magnetorheological fluids
… This thesis presents two methods: one is a dynamic sealing method to be applied on current micro-scale gear pumps using MR fluids, and the other is a novel design method of micropumps using ER fluids. Using MR fluid with applied magnetic field as a substitute for industrial hydraulic fluids, …
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Elevated-Temperature Oxidative Curing, Friction and Wear of Polyphenylene Sulfide (PPS) and its Composites
… polymers composites overcome demanding dynamic sealing conditions in industrial applications, like rotary and reciprocating machinery. Low friction and wear, especially at elevated temperatures, are the dominating selection criteria in these applications. Compared with other polymers in …
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Multiphase oil transport at complex micro geometry
Dynamic sealing systems, such as mechanical face seals and piston rings in internal combustion engines are critical components of modern machines. These sealing systems present a unique challenge in controlling the lubricant supply and flow in the contact areas in order to minimize leakage, …
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Determinación de metodología para el desarrollo de juntas dinámicas de alta presión: aplicación y validación en intensificadores de tecnología HPP
Este trabajo recoge la investigación, análisis y desarrollo de las juntas dinámicas de alta presión utilizadas en compresores de tecnología de procesados por altas presiones, High Pressure Proccesing (HPP). La durabilidad de las juntas se estudia en primer lugar preparando diferentes juntas, …
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Hydrodynamic added mass determination and attitude estimation of the Seahog - a remotely-operated underwater vehicle
… Seahog had been previously developed. Its hydrodynamic models were based on results from SolidWorks’ simulations and existing empirical formulation [2]. The added mass values implemented in the simulation were estimated using available empirical data, though for the formulas to be applicable, an …