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Browsing by Author "Nurick, Gerald N"

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A Precision Experiment for the Deformation and Fracture of Blast Loaded Plates

Author: Cloete, Trevor John Date: 2022 The purpose of this thesis is to present a novel laboratory scale precision test [1] apparatus, developed specifically to study of the deformation and fracture of blast loaded plates. A review of published laboratory scale blast testing showed ... Read more
Active control of passive safety in passenger motor vehicles : a feasibility study investigating dynamic denting of members using pyrotechnic devices

Author: Marshall, N S Date: 1995 This report describes a feasibility study investigating dynamic denting of members using pyrotechnic devices to engineer favourable energy absorption characteristics into thin walled tubes. A tube of sufficiently low slenderness ratio and ... Read more
Analysis of a car door subjected to side impact

Author: Long, Christopher Robert Date: 2016 The study presented in this thesis focuses on the response of a side impact beam located in a car door to impact loading in close conformation to the Federal Motor Vehicle Safety Standard 214 (FMVSS 214) standard. The side impact beam is ... Read more
Analysis of deformation and tearing of uniformly blast-loaded circular and square plates rectangular beams and T-beams

Author: Muluh, Esau Ticha Date: 2001 This investigation examines the failure of circular and square mild steel plates, aluminium rectangular beams and T-beams subjected to impulsive loads. The objective of this investigation is to numerically determine the dynamic response of ... Read more
Assessing the effect of friction on compression split Hopkinson pressure bar tests

Author: Hartley, R S Date: 2004 An enhanced understanding of material behaviour during rapid loading allows designers to improve the safety and efficiency of industrial processes and commercial products. These improvements are due, in part, to the use of increasingly powerful ... Read more
An assessment of software packages as applied to particles in a rotating mill

Author: Sonn, Leigh M Date: 2001 This thesis evaluates three different software packages to test their potential use i ncomminution. The packages are ELFEN, ABAQUS and Particle Flow Code (PFC²D). The numerical codes differe in the method of inputting data as well as the ... Read more
Blast loading of sandwich panels with thin-walled tube cores

Author: Theobald, Matthew David Date: 2007 An investigation into the response of a novel sandwich panel under blast loading is presented. Thin-walled tubar members have been used extensively as energy absorbers under impact conditions. The progressive folding mechanism induced by axial ... Read more
The characterisation of magnetic couplings and the development of a thruster module for an ROV

Author: Hope, Timothy Patrick Date: 2015 This dissertation focuses on the development of thruster modules and the characterisation of magnetic couplings for a Remotely Operated Underwater Vehicle (ROV). The dissertation begins with an introduction to the Seahog ROV developed at the ... Read more
A concept model for a multi-fingered prosthetic hand

Author: Kotze, Johan Date: 1997 The various attempts by individuals to replace the hand has led to some ingenious and practical designs, but if compared to the real hand these designs are still light years behind. Till recently the most functional prostheses developed were ... Read more
Crushing characteristics of axially stacked square tubes

Author: Ronchietto, Fabio Federico Piraino Date: 2008 The crushing and energy absorption characteristics of thin-walled specimens consisting of single, welded and two axially stacked plate-divided mild steel square tubes were investigated by the performance of numerous quasi-static and dynamic ... Read more
Deformation and tearing of uniformly blast-loaded quadrangular stiffened plates

Author: Yuen, Steeve Chung Kim Date: 2000 An investigation into the deformation and tearing of stiffened quadrangular plates subjected to a uniform blast load is presented. A series of experimental results and numerical modelling using the finite element package; ABAQUS, on built-in ... Read more
Designing and modelling an automated packaging system

Author: Tollner, Martin Ernst Date: 1997 This thesis describes the design and modelling of an improved materials handling system for a beverage cap production factory called BevCap, located in Epping, Cape Town. The factory consists of twelve production lines, which produce various ... Read more
Determination of material properties of mild steel at different temperatures and strain rates

Author: Vara, Amit Rashiklal Date: 2007 Quantification of material properties through physical experiments is of significant importance. Test data from such experiments aid in the understanding of the material behaviour when exposed to a variety of loading conditions. Such data ... Read more
Determination of the power losses on a tyre-mounted ore-grinding mill

Author: Tyabashe, Loyiso Date: 1998 The objective of this study was to determine the power losses occurring on a tyre-mounted ore-grinding mill designed by Dorbyl Heavy Engineering for Mintek. In order to understand the type of losses occurring on this mill it was decided that ... Read more
Development and proving of a split Hopkinson pressure bar used for high strain rate materials testing

Author: Marais, Stephen Thomas Date: 2001 As a result of increasing demand to improve analysis of manufacturing techniques and safety in structures, it is necessary to determine material properties at high strain rates. Conventional screw-driven or servo-hydraulic methods of testing ... Read more
The development and validation of a geometrically simplified and an accurate finite element model of the wrist joint

Author: Iyer, Yolande-Leigh Date: 2009 The injury to the wrist joint resulting from a fall onto the outstretched hand was simulated using two models. The two validated three-dimensional wrist joint models were created using the general purpose finite element software, ABAQUS. The ... Read more
The effect of boundary conditions on the failure of thin plates subjected to impulsive loading

Author: Thomas, B M Date: 1995 This report presents the results of an investigation into the effects of edge boundary conditions on the failure of thin plates subjected to impulsive loading. In previous investigations the discrepancy between experimental results and ... Read more
The effects of blast induced imperfections on the energy absorption characteristics of square tubes

Author: Yuen, Steeve Chung Kim Date: 2006 This investigation examines how blast-induced imperfections at opposite sides of a square tube affect the thin-wall structure and reduce its crush load when compressed in the axial direction i.e. its energy absorption characteristics. Read more
The effects of different degrees of confinement on the deformation of square plates subjected to blast loading

Author: Geretto, Carlo Date: 2012 This work relates to the effcts of the degree of confiement for air blasts only. The response of a structure subjected to a blast load is dependent on several factors; for instance stand off distance, geometry and mass of explosive, geometry ... Read more
The effects of the slip amplitude and lubricant type on the rate of false brinelling in roller bearings

Author: Jordan, Ivan Keith Date: 1995 False brinelling is a wear phenomenon that occurs in stationary rolling element bearings. Vibrations from adjacent running machinery are transmitted to the stationary bearing via the machinery foundations, and result in relative motion between ... Read more