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 13 of 13 for “"Force and energy"”.
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Force and Energy Measurement of Bubble-Particle Detachment
… are far ranging; from decreased grinding costs and increased recoveries to simplified flow-sheet design and increased throughput, all leading to increased revenue. Bubble-particle detachment has been studied to better understand the factors influencing the strength of attachment and the energies …
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Modelling and analysis of a non-pneumatic tire-road interaction using finite element method
… of a vehicle, responsible for transmitting all forces and moments generated during contact with the ground. Therefore, all tire characteristics directly influence tire-road interactions, including tractive and cornering performance. In this thesis, a non-pneumatic tire of size 15/6N6 was …
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Turbulent fluid flow and heat transfer in annular passages with rough surfaces and moving cores.
… flows in concentric annuli with rough surfaces and moving cores, by analytically predicting the effects of surface roughness, core velocity and turbulent motion on the momentum and heat transfer characteristics of the flow, such as friction forces, velocity profiles, temperature profiles and …
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Measurement of forces between and within bilayers of neutral phospholipids
… phases made up of alternating layers of water and bimolecular lipid leaflets. Three complementary methods, osmotic, mechanical, and vapour pressures, were used to measure the work of removing water from lamellar phases composed of frozen dipalmitoylphosphatidylcholine ( DPPC ), melted DPPC, egg …
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Development of dielectric elastomer actuators for MRI devices
… actuation devices. They exhibit large strains and have high force and energy densities. They can be designed in a variety of geometries and are inexpensive to manufacture. Currently, the use of DE Actuation is limited because quantitative design information is incomplete and the complex …
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Design, fabrication, and calibration of an instrumented drop weight impact tester
In this thesis, the complete design, fabrication, and calibration of an instrumented drop weight impact tester is described. Included in this description are all the sketches and drawings that are needed to duplicate this project, if so desired. This impact tester was built for around $23,000 less …
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Understanding estimation and its relation to engineering education
… idea, planning experiments, sizing components, and setting up and checking detailed analyses. The overall goals of this thesis were to understand how people make rough estimates for physical quantities and to understand how that activity relates to undergraduate engineering education. The …
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The electrodynamics of spatially stationary objects
Not available
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A laboratory simulation of low velocity projectile impact on thin plates
… accurately simulate a projectile impact event and provide an accurate means of analysing a material response to projectile impact events. A low velocity apparatus, based on the conventional instrumented drop tower apparatus, was designed and constructed. The apparatus is instrumented in order …
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Energy Harvesting Hydraulically Interconnected Shock Absorber: Modeling, Simulation and Prototype Validation
… absorbers that are only capable of dissipating energy in the form of heat. Each shock absorber in a hydraulic interconnected suspension is connected by hydraulic circuits, allowing the electrified hydraulic fluid to be used to counteract undesirable body motion and enhance dynamic performance as …
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Effects of priming and stage of development on vigor and longevity of muskmelon (Cucumis melo L.) seeds
… the optimal harvest time for best seed quality and long-term storage. Several types of osmotic and matric priming treatments were investigated to determine the optimal treatment for maximal seed vigor and to test the effects of priming on seed storage life. The most effective priming treatments …
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Investigation of wound characteristics and the force associated with skull fracture due to impact by a hammer
Death due to cranial blunt force trauma is a major issue not just in South Africa but worldwide. The vast majority of studies conducted on cranial blunt force trauma have analysed trauma to the frontal portion of the head. This is due to the involvement of the frontal portion of the head in …