Browsing Conference Publications by Author "Tshabalala, Lerato C"

Now showing items 1-10 of 10

Effect of powder bed preheating on distortion and mechanical properties in high speed selective laser melting

Author: Motibane, Londiwe P ; Tshabalala, Lerato C ; Mathe, Ntombizodwa R ; Hoosain, Shaik E ; Knutsen, RD Date: Oct 2019 Selective Laser Melting (SLM) is known to cause residual stresses due to the inherent large thermal gradients from high heating and cooling rates during manufacturing. The residual stresses tend to induce distortion, delamination of parts ... Read more
The effect of selective laser melting build orientation on the mechanical properties of AlSi10Mg parts

Author: Mfusi, BJ ; Tshabalala, Lerato C ; Popoola, API ; Mathe, Ntombizodwa R Date: Oct 2018 Additive manufacturing is currently applied across a broad material selection and it is growing in production volume and economic impact. Aluminium is one of the materials that play a significant role in the aerospace industry because of its ... Read more
Industry taking up on-demand additive manufacturing of spare parts

Author: Bester, Duwan C ; Tshabalala, Lerato C Date: Nov 2021 The adoption of Additive manufacturing (AM) in South Africa has grown significantly, with more industries investing and investigating the possibility of adoption to their operations. Some of these industries are the railway and mining industries, ... Read more
Influence of stress relieving thermal cycles on AISI10 Mgspecimens produced by selective laser melting

Author: Mfusi, Busisiwe J ; Mathe, Ntombizodwa R ; Popoola, Patricia A ; Tshabalala, Lerato C Date: Oct 2019 The AlSi10Mg alloy is known for its castability, corrosion resistance, high heat conductivity, low weight and good weldability. The applications of the aluminium alloy components includes heat exchangers that are subjected to high temperatures ... Read more
Multiphysics simulation of thermal phenomena in direct laser metal powder deposition

Author: Pityana, Sisa L ; Tlotleng, Monnamme ; Tshabalala, Lerato C ; Makoana, Nkutwane W ; Botes, A ; Hachemi Amara, EL Date: Nov 2016 The direct laser metal deposition (DLMD) is a recently developed technique for manufacturing solid parts, layer by layer, directly from powder. The process uses a high power laser beam focused onto a metallic substrate to generate a molten ... Read more
Nanoindentation and corrosion behaviour of 410 stainless steel fabricated via additive manufacturing

Author: Lesufi, M ; Akinwamide, SO ; Makoana, Nkutwane W ; Tshabalala, Lerato C ; Olubambi, PA Date: Sep 2022 This study investigates the microstructural, nanomechanical, and corrosion behaviour of different sections of 410 steel fabricated via directed energy deposition technique. The morphology exhibited by the longitudinal and transverse sections ... Read more
Post processing of Ti6Al4V manufactured using high power laser powder bed fusion

Author: Makoana, Nkutwane W ; Yadroitsava, I ; Tshabalala, Lerato C ; Yadroitsev, I ; Mathoho, Ipfi ; Pityana, Sisa L Date: Sep 2022 To further increase the adoption of additive manufacturing in the industry, it is important to leverage the technology’s potential for serial production to drive down the cost of manufacturing. The use of high-powered laser beam has been ... Read more
Process control & monitoring for laser micromaching of Si3N4 ceramics

Author: Tshabalala, Lerato C ; Pityana, Sisa L ; Styne, J ; Höfer, M ; Schäfer, L Date: Sep 2012 Laser machining which is a non-contact process that offers the advantage of machining advanced ceramics. In laser machining Si3N4, surface temperature is increased and controlled to evaporate the YSiAlON glassy phase of the Si3N4. However, ... Read more
Residual stress, porosity and surface roughness for laser powder bed fusion manufactured Ti6Al4V at high laser powers

Author: Makoana, Nkutwane W ; Yadroitsava, I ; Yadroitsev, I ; Du Plessis, A ; Tshabalala, Lerato C ; Pityana, Sisa L Date: Nov 2021 The use of high-powered lasers presents a unique opportunity to improve the LPBF productivity since a larger beam spot size and higher scanning speeds can be utilized to increase the process build rate. In this study, a custom-built LPBF ... Read more
Surface texturing of sialon ceramic by femtosecond pulsed laser

Author: Tshabalala, Lerato C ; Ntuli, CP ; Fwamba, JC ; Popoola, P ; Pityana, Sisa L Date: Jan 2017 Femtosecond laser surface micromachining is a technique in which an ultrashort pulse laser beam is focused to dimensions of a few microns inside or on the surface of the substrate. In this paper, surface texture transformation behaviour of ... Read more

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Browsing Conference Publications by Author "Tshabalala, Lerato C"

Browsing Conference Publications by Author "Tshabalala, Lerato C"

Browse

All of ResearchSpace

This Collection

Quick Links

Legislation and compliance

General Enquiries

Social Connect