• Obstacle avoidance with a multicopter in a dynamic two-dimensional environment 

      Coetzee, Jacobus Stephanus (2017-03)
      ENGLISH ABSTRACT: In order to allow a multicopter to fly autonomously in a dynamic two-dimensional environment, a prototype obstacle avoidance system was developed. Included in this prototype avoidance system was the ...
    • Obstacle avoidance with optic flow 

      Craeye, Cian Alexander (Stellenbosch : Stellenbosch University, 2019-04)
      ENGLISH ABSTRACT: In order to determine the potential of using optical flow as an instrument for quadcopter navigation, a real-time depth estimation system was created. The system was programmed in Python and made use ...
    • Obtaining non-linear orthotropic material models for PVC-coated polyester via inverse bubble inflation 

      Jekel, Charles F. (Stellenbosch : Stellenbosch University, 2016-03)
      ENGLISH ABSTRACT: Uniaxial tests in the warp, fill, and 45° bias direction were performed on PVCcoated polyester to determine a non-linear orthotropic material model. Optimization was used to minimize the load displacement ...
    • On alternative solution methods for solving approximate subproblems in SAO (Sequential Approximate Optimization) 

      Cronje, Marlize (Stellenbosch : Stellenbosch University, 2015-12)
      ENGLISH ABSTRACT: In this study, we focus our attention on sequential approximate optimization (SAO) techniques for large scale nonlinear constrained simulation based optimization problems, and aim to add to the efficiency ...
    • One-dimensional transient cold filling simulation of a molten salt central receiver pipe 

      Swart, Jean Jacques (Stellenbosch : Stellenbosch University, 2017-12)
      ENGLISH ABSTRACT: In this study, cold filling was investigated as a more efficient means of filling a receiver panel with molten salt, eliminating or reducing the need for trace heating before filling the panel. Cold filling ...
    • Ontwerp van 'n generiese fladdermodel 

      Agenbach, Willem Adriaan (Stellenbosch : Stellenbosch University, 1991)
      ENGLISH ABSTRACT: A generic flutter model was designed to be used in the 1.5 m low-speed wind-tunnel of Aerotek, CSIR. After manufacture, the model was calibrated and tested in the abovementioned wind-tunnel. The result ...
    • Operational modal analysis on the SA Agulhas II 

      Van Zijl, Christof Moolman (Stellenbosch : Stellenbosch University., 2020-03)
      ENGLISH ABSTRACT: Full-scale operational measurements were conducted on a polar vessel during an expedition to Antarctica. Accelerometers distributed along the length of the vessel were used to capture vertical, lateral ...
    • Optimal design of Orthotropic Piezoelectric membranes and plates using particle swarms 

      Joubert, Matthew James Stuart (Stellenbosch : Stellenbosch University, 2014-04)
      ENGLISH ABSTRACT: Over the past 50 years smart materials have made their appearance in many structures. The thermopiezoelectric ceramic is one of these smart materials. When thermal e ects are considered negligible, then ...
    • The optimal patient-specific placement of the reverse total shoulder component 

      Delport, Sven (Stellenbosch : Stellenbosch University, 2015-03)
      ENGLISH ABSTRACT: Reverse total shoulder arthroplasty is used as the treatment for arthritic rotator cuff deficient shoulders. Some of the most common complications of a reverse shoulder arthroplasty are scapular notching, ...
    • Optimization of a low speed wind turbine using support vector regression 

      Wise, John Nathaniel (Stellenbosch : University of Stellenbosch, 2009-03)
      NUMERICAL design optimization provides a powerful tool that assists designers in improving their products. Design optimization automatically modifies important design parameters to obtain the best product that satisfies ...
    • Optimization of fir-tree-type turbine blade roots using photoelasticity 

      Hettasch, Georg (Stellenbosch : University of Stellenbosch, 1992-12)
      ENGLISH ABSTRACT: The large variety of turbo-machinery blade root geometries in use in industry prompted the question if a optimum geometry could be found. An optimum blade root was defined as a root with a practical ...
    • Pallet routing strategies for a reconfigurable conveyor. 

      Havenga, Pieter-Jan (Stellenbosch : Stellenbosch University, 2017-03)
      ENGLISH ABSTRACT: A reconfigurable manufacturing system is characterized by high customizability and a high throughput rate. The research presented in this thesis considers a reconfigurable approach to the path planning ...
    • PANDAS: Paediatric Attention-Deficit Hyperactivity/Disorder Application Software. 

      Mwamba, H. M. (Stellenbosch : Stellenbosch University, 2018-12)
      ENGLISH ABSTRACT: Attention-deficit/hyperactivity disorder (ADHD) is a common neuropsychiatric disorder that impairs social, academic, and occupational functioning in children, adolescents and adults. It is estimated that ...
    • Parallel paradigms in optimal structural design 

      Van Huyssteen, Salomon Stephanus (Stellenbosch : Stellenbosch University, 2011-12)
      ENGLISH ABSTRACT: Modern-day processors are not getting any faster. Due to the power consumption limit of frequency scaling, parallel processing is increasingly being used to decrease computation time. In this thesis, ...
    • Particle deflection and plate-out dynamics in a helium stream 

      Steyn, Hermanus Johannes (Stellenbosch : University of Stellenbosch, 2009-12)
      ENGLISH ABSTRACT: In the primary circuit components of high temperature reactors, various unwanted particles have been found. These particles include, for example, graphite and silver- 110 (110mAg). The silver-110 (110mAg) ...
    • Particle swarm optimisation: an algorithm using support vector classification based constraint approximations. 

      Malan, Maria Magdalena (Stellenbosch : Stellenbosch University, 2019-04)
      ENGLISH ABSTRACT: Particle swarm optimisation (PSO) is by its nature an unconstrained global optimisation method, which must be, and has been, adapted in order to be capable of solving constrained optimisation problems. ...
    • A passive night-sky radiation system 

      Joubert, Gideon Daniel (Stellenbosch : Stellenbosch University, 2014-12)
      ENGLISH ABSTRACT: A passive night-sky radiation cooling system consists of a radiation panel and a cold water storage tank. The stored cold water may be used to cool a room during the day time, particularly in summer. ...
    • A passive suspension system for a hydrofoil supported catamaran 

      Kopke, Markus (Stellenbosch : University of Stellenbosch, 2008-03)
      This study investigates practical passive methods to improve the seakeeping of a Hydrofoil Supported Catamaran (Hysucat). The Hysucat is a hybrid vessel combining hydrofoil efficiency with the stability of catamarans. The ...
    • The performance and simulation of spark ignition engine employing an aftermarket engine control unit 

      Brink, Andre Daniel (Stellenbosch : Stellenbosch University, 2019-04)
      ENGLISH ABSTRACT: This thesis discusses the development and upgrade of an internal combustion spark-ignition engine test cell. Existing test cell equipment was upgraded and additional sensors were installed onto the engine. ...
    • Performance and thermo-mechanical cost evaluation of API 661 air-cooled heat exchangers 

      Ackers, Mogamat Sadley (Stellenbosch : Stellenbosch University, 2012-12)
      ENGLISH ABSTRACT: The optimal design of a heat exchanger for a specified heat transfer, pressure drop and set of ambient conditions entails minimising space, weight, material usage and overall cost. However, the variables ...