Browsing Masters Degrees (Mechanical Engineering) by Title
Now showing items 66-85 of 132
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The formulation of process variables for the elimination of defects in a semi-solid high pressure die cast component.
(2006)Semi-Solid Metal (SSM) forming has distinct advantages: strength, near net shape, thick and thin sections and a large scope of materials able to be cast. The aim of this project is to produce a near net shape component ... -
Heat transfer enhancement in nano-fluids suspensions : thermal wave effects and hyperbolic heat conduction.
(2005)The spectacular heat transfer enhancement revealed experimentally in nanofluids suspensions is being investigated theoretically at the macro-scale level aiming at explaining the possible mechanisms that lead to such ... -
High temperature fatigue crack growth behaviour of TIMETAL 21S in an oxidizing environment.
(1995)The high temperature fatigue crack growth behaviour of the newly developed, metastable titanium-based alloy, TIMETAL 21S, was investigated in an inert and an oxidizing environment. The investigation adopted a two pronged ... -
A high-flux solar concentrating system.
(2011)This research investigates the collection of concentrating solar energy and its transmission through optical fibres for use in high temperature applications such as lunar in-situ resource utilisation (ISRU) programmes, ... -
A hybrid reconfigurable computer integrated manufacturing cell for mass customisation.
(2011)Mass producing custom products requires an innovative type of manufacturing environment. Manufacturing environments at present do not possess the flexibility to generate mass produced custom products. Manufacturers’ ... -
The hydrodynamic design and analysis of a liquid oxygen pump impeller for a rocket engine.
(2018)The deployment of micro- and nanosatellites has greatly increased over the past few decades with advances in miniaturized electronics for communication, imaging and attitude control. The South African satellite industry ... -
The hydrodynamic design and analysis of an RP-1 pump for a liquid rocket engine.
(2018)South Africa has a fledgling satellite industry but lacks the ability to launch spacecraft into low Earth orbit. As a result, the University of KwaZulu-Natal’s (UKZN’s) Aerospace Systems Research Group (ASReG) began the ... -
Independent assessment and benchmarking of no/low cost finite element analysis software for linear and non/linear static structural analysis.
(2016)The aim of this research was to determine if the development of low-cost (less than 500 USD) or no-cost analysis software, specifically in the area of computational structural mechanics through finite element analysis ... -
The influence of process factors on the production of semi solid feedstock.
(2000)Semi-solid manufacturing is a near net shape forming process that takes advantage of an alloy's thixotropic behaviour. However, in order to obtain the desired thixotropic properties from an alloy in the semi -solid state, ... -
The influence of sulphidizing attack on the mechanism of failure of coated superalloy under cyclic loading conditions.
(1998)A systematic study of the effect of sulphidizing atmosphere on the High Temperature Low Cycle Fatigue (HTLCF) properties of coated and uncoated unidirectionally solidified MARM002 nickel base superalloy was performed at ... -
Investigation and development of structural composite materials for use as electromagnetic shielding agents in the current aerospace industry.
(2010-10-20)Due to the nature of today's competitive electronics market, the development of new electronic -
Investigation into inspection system utilisation for advanced manufacturing systems.
(2017)Varied inspection is an aperiodic inspection utilisation methodology that was developed for advanced manufacturing systems. The inspection scheme was created as a solution to improve manufacturing performance where inspection ... -
An investigation into the performance of plasma and laser coatings under rolling contact.
(2008)Rolling contact is experienced by a large number of components in mechanical designs. Examples include roller bearings and ink distribution rollers in the printing industry. Rolling contact results in surface wear. It is ... -
An investigation of solar powered absorption cooling systems for South Africa.
(2012)Increased standards of living and indoor comfort demands have led to an increase in the demand for air-conditioning in buildings in South Africa. Conventional vapor compression systems use refrigerants that damage the ... -
An investigation of the strength of an aircraft wing bolt with a centrally drilled hole.
(2000)The investigation contained herein is a part of a larger, long-term project: The Development of SMART Aircraft Bolts. Structural failures, at highly stressed components, arc common in some of the aircraft used by the ... -
Life prediction of power line damper.
(2012)Power line function is to transfer electrical power. Power lines represent a major component in the transport process of electricity and they are subjected to various types of failures. Causes of failure include wind-induced ... -
Lightweight structural design of UAV wing through the use of coreless composite materials employing novel construction techniques.
(2017)A new structural layout was designed for an existing UAV wing with the aims of lightening the wing by eliminating the use of cored composite construction and reducing the manufacturing time of the wing by making use of ... -
Long term adherence to antiretroviral therapy in a South African cohort.
(2018)Background Current treatment of HIV requires life-long antiretroviral therapy (ART) to suppress HIV replication. Adherence to medication is a critical component of treatment success, where ≥95% of doses, must be taken ... -
Low level task execution, programming and control for jigs, fixtures and equipment.
(2019)Abstract available in PDF. -
The measurement of axial turbine tip clearance flow phenomena in a moving wall annular cascade and in a linear cascade.
(1989)On unshrouded axial flow turbine rotors, the tip clearance, required for thermal expansion and manufacturing limitations, allows fluid to leak from the pressure side to the suction side of the blade. This flow across the ...