Author:Khomenko, MD; Makoana, Nkutwane W; Pityana, Sisa L; Mirzade, FKHDate:Jul 2021A 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
Author:Molobi, E; Sacks, N; Theron, MarithaDate:Apr 2022Laser engineered net shaping of a WC-10wt%FeCr cemented carbide showed cracking during deposition despite using a full factorial design of experiments matrix along with single and multiple objective optimization models to establish an optimal ...Read more
Author:Xungu, Sipho; Mgangira, Martin B; Giani, John CDate:Nov 2021This paper describes the design and manufacturing of a mechanical system, the Aggregate Abrasion Test Device (AATD), which comprises of a rolling model drum, with the purpose of obtaining experimental data that is subsequently used to quantify ...Read more
Author:Oyesola, M; Mpofu, K; Daniyan, I; Mathe, Ntombizodwa RDate:Dec 2022In evaluating emerging technology, such as additive manufacturing, it is important to analyse the impact of the manufacturing process on efficiency in an objective and quantifiable manner. This study deals with the design and simulation of a ...Read more
Author:Dickens, John S; Maweni, Thabisa; Setati, Tiro; Suddoo, ZubairDate:Nov 2023The HERMES autonomous surveillance robot platform is a low-cost outdoor autonomous surveillance vehicle. It is designed to autonomously patrol outdoor areas performing surveillance and providing automated alerts of detected vehicles and ...Read more
Author:Bolokang, Amogelang SDate:Feb 2019Foundry slag formed during the production of medium carbon steel was milled into powder which was then compacted into blocks to form heat treatment furnace refractory materials. The foundry slag was ball-milled into powders which were further ...Read more
Author:Botha, Natasha; Marais, Stephen TDate:Nov 2021This 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
Author:Dickens, John S; Goorun, Yurisha; De Ronde, WillisDate:Nov 2021The Dassie robot platform is a rugged outdoor autonomous vehicle, capable of moving through rough terrain whilst carrying a heavy payload and operating for extended periods of time. It is designed to autonomously perform inspections of rows ...Read more
Author:Mathe, Ntombizodwa RDate:Aug 2021The additive manufacturing of aluminium alloys has gained great interest in the transport industry in the past 10 years. This is mainly due to the lightweight and good strength that these alloys offer especially for applications in aerospace ...Read more
Author:Molobi, E; Sacks, N; Theron, MarithaDate:Nov 2021In this study a cemented tungsten carbide rotary burr prototype was fabricated using directed energy deposition based on an optimal parameter set which was previously derived from a full factorial design of experiments matrix approach. Finite ...Read more
Author:Okoro, AM; Machaka, Ronald; Lephuthing, SS; Awotunde, MA; Oke, SR; Falodun, OE; Olubambi, PADate:May 2019The quest to achieve uniform dispersion of multiwalled carbon nanotubes (MWCNT) in metal matrices without compromising the structural integrity of the nanotubes during the production of metal matrix composites have been a lingering challenge ...Read more
Author:Teffo, ML; Nyakane, NE; Seerane, M; Shongwe, MB; Machaka, RolandDate:Feb 2021The allotropic behavior of titanium is affected by many factors such as processing temperature and alloying elements. Using processing method with parameters that enhaces properties of the resulting alloy is imperative. In this study, CP-Ti, ...Read more
Author:Mogale, N; Matizamhuka, W; Machaka, Ronald; Shongwe, M; Yamabe-Mitarai, Y YDate:Jan 2021Ternary Ti-47.5Al-(1–3)Cr (at. %) and reference quaternary Ti-48Al-2Cr-2Nb (at. %) titanium aluminide alloys were processed from elemental powders utilizing mechanical milling, mechanical alloying and spark plasma sintering. The effect of Cr ...Read more
Author:Lekoadi, Paul M; Tlotleng, Monnamme; Annan, K; Maledi, N; Masina, Bathusile NDate:Nov 2022This study presents the investigation of the influence of heat treatment on microstructure, hardness and tensile properties of high-speed selective laser melted Ti6Al4V components. Heat treatment was performed to obtain an improved microstructure ...Read more
Author:Kgoahla, Reneilwe M; Lekoadi, Paul M; Masina, Bathusile NDate:Nov 2023This study presented the investigation of the influence of post heat treatment temperature on the microstructure and hardness of TiC/Ti6Al4V composite manufactured with laser metal deposition. Heat treatment was performed to improve the ...Read more
Author:Zain, EM; Youssef, AF; Sabbagh, AEI; Pityana, Sisa L; Taha, MADate:Dec 2021Nickel Titanium alloy (Nitinol) is characterized by its good mechanical properties, good damping properties in addition to its distinctive shape-memory effect and superelasticity effect besides its great bio-mechanical compatibility and ...Read more
Author:Arthur, Nana KK; Kubjane, SM; Popoola, API; Masina, Bathusile N; Pityana, Sisa LDate:May 2023Titanium alloys are prone to increased oxidation rates when exposed to higher temperatures during application. As a result, the components suffer mechanical failure due to the formation of the alpha-case layer at 500 °C. To improve its corrosion ...Read more