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Browsing Research Publications/Outputs by Cluster "Manufacturing"

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2D numerical model for heat transfer on a laser deposited high entropy alloy baseplate using Comsol Multiphysics

Author: Dada, A ; Popoola, P ; Mathe, Ntombizodwa R ; Adeosun, S ; Aramide, O Date: Dec 2021 In an optimization study, cracks were observed in the microstructures of laser-deposited HEAs on a steel baseplate from residual stresses, thus, the optimization of crack-free microstructures was achieved by the optimization of the laser ... Read more
3D mapping and photogrammetry sensor payload for unmanned aerial vehicles

Author: Purdon, Kyla ; Van Niekerk, T ; Phillips, R ; Marais, Stephen T Date: Nov 2023 Unmanned Aerial Vehicles (UAVs) have shown great potential for data collection and monitoring of areas. Sensors such as LiDARs and cameras can be used on UAVs for high-resolution data collection and used for various applications like Digital ... Read more
4-RRS PKM for stabilisation on a mobile sensor platform

Author: Ramruthan, Kshir ; Kuchwa-Dube, C Date: Nov 2023 Disturbances experienced by an inspection robot can reduce the quality of its sensor measurements, which can in turn negatively affect the robot’s functionality. This research aimed to design a Parallel Kinematic Mechanism (PKM) for use as ... Read more
Addition of Chromium and its effect on the microstructure and mechanical properties of laser- coated high carbon ferrochrome alloy on mild steel

Author: Aramide, BP ; Popoola, P ; Sadiku, R ; Jamiru, T ; Pityana, Sisa L Date: Aug 2021 Laser cladding is an additive manufacturing technology that can be utilized in surface strengthening, modification, and repair of components that are subjected to adverse working conditions. This can be accomplished by the addition of ... Read more
The adsorption of halogen molecules on Ti (110) surface

Author: Tshwane, David M ; Modiba, Rosinah ; Govender, Gonasagren ; Ngoepe, PE ; Chauke, R Date: Jan 2021 Adsorption of halogen on the metal surface has received much attention due to its technological applications and major relevance for material surface processing, corrosion protection and etching. In this work, first-principle approach was ... Read more
Adsorption of NH3 and NO2 molecules on sn-doped and undoped ZnO (101) surfaces using density functional theory

Author: Dima, Ratshilumela S ; Tshwane, David M ; Shingange, Katekani ; Modiba, Rosinah ; Maluta, NE ; Maphanga, Rapela R Date: 2022 The adsorption and interaction mechanisms of gaseous molecules on ZnO surfaces have received considerable attention because of their technological applications in gas sensing. The adsorption behavior of NH3 and NO2 molecules on undoped and ... Read more
Adsorption-desorption of F2 diatomic molecule on Ti (100) surface at different coverages

Author: Tshwane, David M ; Modiba, Rosinah ; Govender, Gonasagren ; Ngoepe, PE ; Chauke, HR Date: Dec 2021 Fluorine molecules and ions are used as an etchant for metal surface processing. The presence of fluorine significantly influences the electrochemical behaviour on a metal surface, which has major relevance for etching, corrosion, electro-catalysis ... Read more
Analysis of dry sliding wear performance of tribaloy T-800/Tungsten carbide coating deposited via laser cladding assisted with preheating

Author: Nyadongo, ST ; Olakanmi, EO ; Pityana, Sisa L Date: Oct 2022 Shafts, gears, axles and crankshafts, which are exposed to severe sliding wear environment, are made from wear resistant EN8 medium carbon steel. The wear resistance of EN8 can be enhanced by depositing it with laser cladding assisted with ... Read more
Anomaly detection monitoring system for healthcare

Author: Boloka, Tlou J ; Crafford, Gerhardus J ; Mokuwe, Mamuku W ; Van Eden, Beatrice Date: Jan 2021 Most developing countries suffer from inadequate health care facilities and a lack of medical practitioners as most of them emigrate to developed countries. The outbreak of the COVID-19 pandemic has left these countries more vulnerable to ... Read more
ARGUS: A pole climbing surveillance robot

Author: De Ronde, Wiilis ; Bosscha, Peter A ; Marais, Stephen T ; Pretorius, A Date: Nov 2023 Due to the high prevalence and unpredictability of violent protest action in South Africa, a need has arisen for rapidly deployable surveillance. This paper proposes an Automated Robotic Guardian for Urban Surveillance (ARGUS) platform, a ... Read more
Assembly line quality assurance through hand tracking and object detection

Author: Mokuwe, Mamuku W ; Goorun, Yurisha ; Crafford, Gerhardus J Date: Oct 2022 This work presents a vision-based quality assurance system that does assembly line monitoring. The system is developed using machine learning hand tracking and object detection methods to monitor the worker’s hand movement while evaluating ... Read more
Challenges in machining of advanced materials

Author: Mathabathe, Maria N ; Bolokang, Amogelang S Date: May 2022 Contemporary ways of employing and combining existing materials are a requisite for meeting tomorrow’s engineering applications. This is upscaled by the potent attributes of remaining competitive by keeping costs effective while advancing the ... Read more
Chemical sensor nanotechnology in pharmaceutical drug research

Author: Thobakgale, Setumo L ; Ombinda-Lemboumba, Saturnin ; Mthunzi-Kufa, Patience Date: Aug 2022 The increase in demand for pharmaceutical treatments due to pandemic-related illnesses has created a need for improved quality control in drug manufacturing. Understanding the physical, biological, and chemical properties of APIs is an important ... Read more
The Circular Economy as Development Opportunity: Exploring Circular Economy Opportunities across South Africa’s Economic Sectors

Author: Godfrey, Linda K ; Nahman, Anton ; Oelofse, Suzanna HH ; Trotter, Douglas ; Khan, Sumaya ; Nontso, Zintle ; Magweregwede, Fleckson ; Sereme, Busisiwe V ; Okole, Blessed N ; Gordon, Gregory ER ; Brown, Bernadette ; Pillay, Boyse ; Schoeman, Chanel ; Fazluddin, Shahed ; Ojijo, Vincent O ; Cooper, Antony K ; Kruger, Daniel M ; Napier, Mark ; Mokoena, Refiloe ; Steenkamp, Anton J ; Msimanga, Xolile P ; North, Brian C ; Seetal, Ashwin R ; Mathye, Salamina M Date: Dec 2021 The intention of this book is to present the CSIR’s position and interpretation of the circular economy, and to use it to drive discussions on where immediate circular economy opportunities are achievable in South Africa. Opportunities that ... Read more
A cloud-based road infrastructure analysis system using machine learning

Author: Naidoo, Thegaran ; Verster, Jacobus J ; Marais, Stephen T Date: Nov 2022 A cloud-based road infrastructure analysis system was developed to assist as an information management system for detecting and managing information about road defects and road assets. The system uses computer vision and machine learning ... Read more
The combination of low level laser therapy and efavirenz drastically reduces HIV infection in TZM-bl cells

Author: Lugongolo, Masixole Y ; Manoto, Sello L ; Ombinda-Lemboumba, Saturnin ; Maaza, M ; Mthunzi-Kufa, Patience Date: Jun 2020 Human immunodeficiency virus (HIV) infection remains a global health challenge despite the use of antiretroviral therapy, which has led to a significant decline in the mortality rates. Owing to the unavailability of an effective treatment to ... Read more
The comparative study of the microstructural and corrosion behaviour of laser-deposited high entropy alloys

Author: Dada, M ; Popoola, P ; Mathe, Ntombizodwa R ; Pityana, Sisa L ; Adeosun, S ; Aramide, O Date: Jun 2021 Corrosion is a conservational occurrence that has a large economic impact on most metals and its alloys because it destroys and deteriorates most materials by an electrochemical process through the reaction of these materials with the ... 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
Conceptual design framework for setting up aluminum alloy powder production system for Selective Laser Melting (SLM) process

Author: Matsagopane, G ; Olakanmi, EO ; Botes, Annelize ; Kutua, S Date: May 2019 Documentation on the correct process and component requirements for setting up efficient aluminum powder production systems capable of manufacturing powder that meets the requirements for the selective laser melting (SLM) process is not ... Read more
Coupled heat transfer, fluid flow and solidification kinetics for laser additive manufacturing applications

Author: Khomenko, MD ; Makoana, Nkutwane W ; Pityana, Sisa L ; Mirzade, FKH Date: Jul 2021 A new coupled heat transfer and solidification kinetics model is developed for the optimization of microstructure during laser additive manufacturing applications. The Johnson–Mehl–Avrami–Kolmogorov equation is applied in a self-consistent ... Read more

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