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Browsing by Author "Botha, Natasha"

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Analysis of mechanical property degradation in polymer nanoclay composites

Author: Botha, Natasha ; Inglis, HM ; Labuschagne, FJWJ Date: Nov 2018 Polymers are used in various industrial applications due to their ease of production, light weight and ductility. Fillers such as nanoclays are added to polymers to improve a range of factors such as material processing, thermal properties, ... Read more
A comparison of visual place recognition methods using a mobile robot in an indoor environment

Author: Van Eden, Beatrice ; Botha, Natasha ; Rosman, B Date: Nov 2023 Spatial awareness is an important competence for a mobile robotic system. A robot needs to localise and perform context interpretation to provide any meaningful service. With the deep learning tools and readily available sensors, visual ... Read more
Damage invariant and high security acquisition of the internal fingerprint using optical coherence tomography

Author: Darlow, Luke N ; Singh, Ann ; Moolla, Yaseen ; Ramokolo, Lesiba R ; Van Wyk, R ; Botha, Natasha ; Webb-Ray, L Date: Nov 2016 Fingerprints are widely used for biometric authentication, identification, and access control. However, most current acquisition devices obtain fingerprints from the surface of the skin and are thus inherently restricted by the surface 2D ... Read more
Development of a graphical user interface as a learning tool for artificial intelligence

Author: Botha, Natasha ; Marais, Stephen T Date: Nov 2021 This study developed a Graphical User Interface (GUI) aimed at teaching the concepts of Machine Learning (ML) algorithms which form the backbone of Artificial Intelligence (AI). This is done by means of tutorial videos and allowing the student ... Read more
Image processing towards the automated identification of nanoparticles in SEM images

Author: Botha, Gerda N ; Wessels, Gert JC ; Botha, Natasha ; Van Eden, Beatrice Date: Jan 2019 SEM images are crucial in the characterisation of material properties. These images can be very hard to interpret without any prior knowledge of the material. This paper discusses a pre-processing method for assisting convolutional Neural ... Read more
Open source implementation of a user material subroutine for composite materials

Author: Botha, Natasha ; Inglis, H Date: Sep 2018 The modeling and simulation of composite materials requires the incorporation of anisotropic material models, as well as appropriate failure criteria or damage models. This was normally done by developing in-house codes or writing additional ... Read more
Optimised path planning of a UAV for inventory management applications

Author: Maweni, Thabisa ; Setati, Tiro ; Botha, Natasha Date: Nov 2023 Inventory management in warehouses is a crucial task in the logistics industry. Manual stocktaking in larger-scale warehouses can be time-consuming and labour-intensive. To automate this process, unmanned aerial vehicles (UAVs) have gained ... Read more
Prototype design of an aerial robotic platform for indoor applications

Author: Botha, Natasha ; Van Eden, Beatrice ; Lehman, Lodewyk ; Verster, Jacobus J Date: Nov 2023 There is an increased interest in using aerial robotic platforms for indoor applications in industrial and manufacturing environments. One such example is stocktaking in warehouses, where the use of other mobile robotic systems is not efficient ... Read more
Reliability of visual inertial odometry on an unmanned aerial vehicle

Author: Setati, Tiro ; Maweni, Thabisa ; Botha, Natasha Date: Nov 2023 There is a need to ensure that an Unmanned Aerial Vehicle (UAV) can fly safely in indoor environments. In this paper, the visual inertial odometry (VIO) implemented in a commercial UAV is tested to determine its reliability to keep its position ... Read more
Simulating object handover between collaborative robots

Author: Van Eden, Beatrice ; Botha, Natasha Date: Nov 2023 Collaborative robots are adopted in the drive towards Industry 4.0 to automate manufacturing, while retaining a human workforce. This area of research is known as human-robot collaboration (HRC) and focusses on understanding the interactions ... Read more
Statistical analysis of the effect of varying material and manufacturing conditions on the mechanical properties of high-density polyethylene/layered double hydroxide composites

Author: Botha, Natasha ; Coetzer, R ; Inglis, HM ; Labuschagne, FJWJ Date: Jul 2023 Polymers are used in various industrial applications due to their ease of production, light weight, and ductility. Fillers such as clays are added to polymers to improve a range of factors such as material processing, thermal properties, fire ... Read more
Statistical analysis of the effect of varying material and manufacturing conditions on the mechanical properties of high-density polyethylene/layered double hydroxide composites

Author: Botha, Natasha ; Coetzer, R ; Inglis, HM ; Labuschagne, FJWJ Date: Jul 2023 Polymers are used in various industrial applications due to their ease of production, light weight, and ductility. Fillers such as clays are added to polymers to improve a range of factors such as material processing, thermal properties, fire ... Read more
Statistical design of experiments: An introductory case study for polymer composites manufacturing applications

Author: Botha, Natasha ; Inglis, HM ; Coetzer, R ; Labuschagne, FJWJ Date: Dec 2021 Statistical design of experiments (DoE) aims to develop a near efficient design while minimising the number of experiments required. This is an optimal approach especially when there is a need to investigate multiple variables. DoE is a ... Read more
Towards better flood risk management using a Bayesian network approach

Author: Wessels, Gert J ; Botha, Natasha ; Koen, Hildegarde S ; Van Eden, Beatrice Date: Nov 2022 After years of drought, the rainy season is always welcomed. Unfortunately, this can also herald widespread flooding which can result in loss of livelihood, property, and human life. In this study a Bayesian network is used to develop a flood ... Read more
Understanding the influence of manufacturing and material parameters on the mechanical properties of polymerclay composites: An exploratory statistical analysis

Author: Botha, Natasha ; Coetzer, R ; Inglis, H ; Labuschagne, J Date: Nov 2020 Polymers are used in various industrial applications due to their ease of production, light weight and ductility. Adding fillers, such as clays, improves a range of thermo-mechanical properties, however manufacturing parameters may have an ... Read more

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