Browsing Doctoral Degrees (Mechanical Engineering) by Title
Now showing items 37-47 of 47
-
Non-stationary responses on hoisting cables with slowly varying length.
(1999)Cables in hoisting installations, due to their flexibility, are susceptible to vibrations. A common arrangement in industrial hoisting systems comprises a driving winder drum, a steel wire cable, a sheave mounted in headgear, ... -
The optimal design of laminated plates for maximum buckling load using finite element and analytical methods.
(1994)In the first part of the study, finite element solutions are presented for the optimal design of symmetrically laminated rectangular plates subject to a combination of simply supported, clamped and free boundary conditions. ... -
Optimisation of the process parameters of the resin film infusion process.
(1999)The resin film infusion process or RFI is a vacuum assisted moulding method for producing high quality fibre reinforced components. The goals of this research have been to investigate this new process, with the aim of ... -
Optimisation of welding parameters to mitigate the effect of residual stress on the fatigue life of nozzle–shell welded joints in cylindrical pressure vessels.
(2017)The process of welding steel structures inadvertently causes residual stress as a result of thermal cycles that the material is subjected to. These welding-induced residual stresses have been shown to be responsible for ... -
Optimum design of grid structures of revolution using homogenised model.
(2000)The present study involves analysis and design optimisation of lattice composite structures using symbolic computation. The concept of a homogenised model is used to represent heterogeneous composite isogrid structure as ... -
The performance of a one and a half stage axial turbine including various tip clearance effects.
(1993)The necessary clearance at the tip of unshrouded rotors of axial turbines allows fluid to leak from the pressure to the suction side of the blade and produces an important component of loss that is ultimately responsible ... -
Production of jet fuel from microalgae biomass cultivated in saline domestic wastewater.
(2018)Jet fuel from crude petroleum oil is known as the most efficient energy carrier for the aviation sector. Environmental concerns and economic pressure drive major industries to adapt to current global revolution towards ... -
Production, evaluation and testing of biodiesel : case studies of Moringa oleifera and selected tropical seed oils.
(2015)Production, evaluation and comparative testing of biodiesel from Moringa oleifera seed oil and selected tropical feedstock oils were undertaken in this study. From studies, Moringa oil has higher oil yields and excellent ... -
Smart materials for structural health monitoring.
(2003)A new philosophy in structural health monitoring was explored, with the view to the creation of a smart mining bolt: one which would bear the normal load of any bolt used in South African gold mining tunnels, but at the ... -
Smart structural health monitoring of mining support units.
(2003)In the South African mining industry, the design of tunnel support systems is generally based on empirical methodologies that consider rockmass characteristics as well as the type of loading (e.g. seismic) that the ... -
Trip steels as smart sensor alloys.
(2013)Upon deformation, TRIP steels undergo progressive irreversible transformation from paramagnetic austenite to more thermodynamically stable, ferromagnetic αʹ-martensite. The change in magnetic permeability is readily ...