Author:Masina, Bathusile N; Mwakikunga, Bonex W; Forbes, ADate:Apr 2013We outline an all-optical and noncontact approach for controlled laser heating and measurement of the resultant temperature distribution at the surface of a material, respectively. We show how the boundary conditions of the heating problem ...Read more
Author:Masina, Bathusile N; Forbes, A; Ndwandwe, OM; Hearne, G; Mwakikunga, Bonex WDate:Mar 2009In this study the authors make use of laser heating of HTHP industrial diamond, as well as the optically measured temperature profile of the diamond surface, to study temperature induced changes to the diamond structure, both chemically and ...Read more
Author:Bell, Teboho; Naidoo, Darryl; Forbes, AndrewDate:Jul 2014The effects of a temperature gradient in a laser crystal in an end-pumped configuration in a solid-state laser resonator results in thermally induced aberrations. Of particular interest we measure the thermally induced lens from the coefficient ...Read more
Author:Salehiyan, Reza; Malwela, Thomas; Ray, Suprakas SDate:May 2017Time-resolved mechanical spectroscopy (TRMS) was conducted to study the thermo-oxidative degradation of linear low density polyethylene (LLDPE) samples with different thermal histories and their blends with a polyamide (PA6) in the melt state. ...Read more
Author:Rossouw, CL; Chetty, A; Moolman, FS; Birkholtz, L-M; Hoppe, H; Mancama, Dalubuhle TDate:Aug 2012The thermo-responsive polymer poly(Nisopropylacrylamide) has received widespread attention for its in vitro application in the non-invasive, nondestructive release of adherent cells on two dimensional surfaces. In this study, 3D non-woven ...Read more
Author:Prins, SN; Cornish, LA; Stumpf, WE; Sundman, BDate:Mar 2003The CALPHAD technique was used to calculate the Al-Ru binary phase diagram. The RuAl (B2) phase was described with the sublattice model (SL), also designated Compound Energy Formalism (CEF), as well as the Modified Sublattice Formalism (MSL), ...Read more
Author:Nabarro, FRN; Cress, CM; Kotschy, PDate:Aug 1996Eshelby’s energy-momentum tensor is used to provide an analytical expression for the driving force for rafting in the elastic regime in a super alloy with a high volume fraction of gamma'. The structure is modeled as a simple cubic array of ...Read more
Author:Baloyi, J; Bello-Ochende, T; Meyer, JPDate:Jun 2014An analysis of irreversibilities generated due to combustion in an adiabatic combustor burning wood was conducted. This was done for a reactant mixture varying from a rich to a lean mixture. A non-adiabatic non-premixed combustion model of a ...Read more
Author:Fosso-Kankeu, E; Mittal, Hemant; Waanders, F; Ray, Suprakas SDate:Apr 2017This research paper reports on the utilization of the hydrogel of gelatine (GL) and its hybrid nanocomposite with clinoptilolite for the adsorption of Cd2+ ions from an aqueous solution and multi-metal ions from mine effluents. The hydrogel ...Read more
Author:Howden, MGDate:Apr 1993Thermogravimetry was determined on a series of alpha, omega-diaminoalkanes, in which the alkane chain contained from three to eight carbon atoms that were located in zeolite ZSM-5 during synthesis. Of the series, 1, 6-diaminohexane functions ...Read more
Author:Mngomezulu, Mfiso E; John, Maya JDate:Apr 2017Fire resistant thermoset-cellulosic fibre composite materials are taking over in advanced engineering applications. As they are high-performance materials, these composites are used in automotive, aerospace, military, safety and security ...Read more
Author:Steyn, WJvdM; De Beer, Morris; Visser, ATDate:Aug 1997The aim of this work was to quantify the structural behaviour of rehabilitated pavements and to optimise the life-cycle cost for the road agency.Read more
Author:May, Siyasanga I; Pratt, Lawrence E; Bokoro, PDate:Jan 2020Photovoltaic modules are normally tested under standard test conditions defined by the International Electrotechnical Commission, but these conditions are different from typical field condition. The standard test conditions for PV modules is ...Read more
Author:Marais, Mario ADate:Nov 2010The concept of sustainable development has increased in importance ever since the coming to prominence of environmental critiques of development in the 1980s. The very concept of sustainability has evolved as research on the dynamics of ...Read more
Author:Du Plessis, CDate:Sep 2006Sustainable development, and with it sustainable construction, is a continuously evolving concept. This has resulted in several iterations of “green” building – from early notions of durability, flexibility, natural building and returning to ...Read more
Author:Mahlangu, Thembisile P; Das, R; Abia, LK; Onyango, M; Ray, Suprakas S; Maity, ArjunDate:Jan 2019A magnetic nanocomposite (NC), Fe3O4@PPy-MAA, was synthesised via in situ oxidative polymerisation of the pyrrole monomer in a thioglycolic acid (mercaptoacetic acid) solution (as a dopant), in the presence of iron oxide (Fe3O4). The newly ...Read more
Author:Wall, Kevin; Rust, Frederik CDate:Jul 2018In 2006, 2011 and 2017 SAICE and the CSIR cooperated to produce “report cards” on the condition of engineering infrastructure in South Africa. Apart from providing condition gradings for several classes of infrastructure, the reports cards ...Read more