Engineering and Information Sciences

People

Madeleine Du Toit



Current Positions:

Fellow of the Institution of Engineers Australia.
Fellow and Immediate Past President of the Southern African Institute of Welding (SAIW).
Fellow of the South African Academy of Engineering (SAAE).
Vice-President of the NSW Branch of Materials Australia.
Member of the Council of the Welding Technology Institute of Australia (WTIA).
Member of the Qualification & Certification Board of WTIA.
Program Leader of Research Program 1 (Materials) of the Energy Pipelines CRC.
Chairperson of Commission IX (Behaviour of metals subjected to welding) of the International Institute of Welding (IIW).
Chairperson of the Working Group Communications & Marketing of IIW.
Member of the American Welding Society (AWS).

Biography:

Madeleine du Toit joined the University of Wollongong as Professor in the Welding Engineering Research Group in the School of Mechanical, Materials and Mechatronic Engineering in April 2013, and has since been appointed Academic Program Director for Materials Engineering, and Program Leader for Research Program 1 (More efficient use of materials for energy pipelines) in the Energy Pipelines CRC. Madeleine holds BEng, MEng and PhD degrees in Metallurgical Engineering from the University of Pretoria in South Africa and a Masters degree in Welding Engineering from the University of the Witwatersrand. She is a registered Professional Engineer in South Africa and a qualified International Welding Engineer (IWE). She served as President and member of Council of the Southern African Institute of Welding (SAIW) from 2010 to 2014, and as Chairperson of the Governing Board of SAIW Certification (responsible for the assessment and certification of welding personnel in South Africa) from 2005 to 2014. During this time she established a very successful internationally accredited training program for International Welding Engineers and International Welding Technologists in South Africa. Madeleine is actively involved in the activities of the International Institute of Welding (IIW) as part of the Australian delegation - currently as Chair of Commission IX (Behaviour of metals subjected to welding), Chair of Working Group Communications & Marketing and as member of the Study Group for Welding Research and Strategy.

Research Interests:

Welding metallurgy; Welding engineering; Corrosion; Physical metallurgy of steel, stainless steel, precious metals, titanium and aluminium alloys.

Professional Activities:

Registered Professional Engineer with the Engineering Council of South Africa (ECSA).
Registered International Welding Engineer (IWE) with the International Institute of Welding (IIW).
Certified Materials Professional (CMatP) with Materials Australia.

Awards:

Southern African Institute of Mining and Metallurgy (SAIMM) Gold medal award (1997) for a paper published in the SAIMM journal (M. Coetzee and P.G.H. Pistorius, The welding of experimental low-nickel Cr-Mn-N stainless steels containing copper, vol. 96, no. 3. May/June 1996. pp. 99-108).
Southern African Institute of Mining and Metallurgy (SAIMM) Silver medal award (1997) for a paper published in the SAIMM journal (P.C. Pistorius and M. Coetzee, Sensitization of type 430 ferritic stainless steel during continuous annealing, vol. 96, no. 3. May/June 1996. pp. 119-125).
Invited to present the opening keynote Jaeger Lecture "2010 and beyond: Opportunities and challenges facing the South African welding industry" at the International Institute of Welding Congress, held in Stellenbosch, South Africa, on 7-10 March 2006.
Harvey-Shacklock Gold Medal Award (2007) presented by the Southern African Institute of Welding for a paper presented at an institute meeting in November 2007 (M. du Toit, G.T. van Rooyen and D. Smith, An overview of the heat-affected zone sensitization and stress corrosion cracking behaviour of 12% chromium type 1.4003 ferritic stainless steels).
Member of the team named Overall Winner, as well as winner of the Product category, in the 2008 Stainless Steel Awards presented by SASSDA (South African Stainless Steel Development Association), for a project involving the design, fabrication and installation of the second stage leach autoclave (manufactured from SAF 2205 duplex stainless steel) at the Impala Platinum Limited Base Metals Refinery in 2007.
Named the Best Paper award winner by the ASME (American Society for Mechanical Engineers) International Gas Turbine Institute for a paper presented at the International ASME Turbo Expo 2008 in Berlin, Germany (WMA Miglietti and M du Toit, High Strength, ductile braze repairs for stationary gas turbine components-Part 1). This award was presented at the ASME Turbo Expo 2009, in Orlando, Florida, USA, in June 2009.
University of Pretoria (South Africa) Exceptional Academic Achiever for the periods 2010-2012 and 2012-2014 (awarded to senior academics who have already achieved professional status and who have maintained continuous exceptional achievement in the fields of undergraduate and postgraduate teaching and learning, research, community service and administration, and who enjoy exceptionally high stature among their peers).
Invited plenary speaker at the American Welding Society 2010 FABTECH International & AWS Welding Show and Conference held in Atlanta, Georgia (USA) on 1-3 November 2010.
Invited to present a paper entitled "Welding - the Achilles heel of the South African manufacturing industry?" as part of the University of Pretoria's Expert Lecture Series on 16 May 2012.
Harvey-Shacklock Gold Medal Award (2013) presented by the Southern African Institute of Welding for a paper presented at the IIW Regional Congress in November 2012 (C. van Rooyen, H. Burger and M. du Toit, Laser metal deposition microstructure of modified low-C martensitic stainless steel).
Harvey-Shacklock Gold Medal Award (2015) presented by the Southern African Institute of Welding for a paper presented at the IIW Annual Assembly in July 2014 (C.J. van Niekerk, M. du Toit and C. van Rooyen, In-situ alloying of AISI 410L martensitic stainless steel with nitrogen during laser cladding).

Future Research Topics:

Weld metal hydrogen-assisted cold cracking of X70 linepipe steel.
Corrosion of aluminium welds.
Grain refinement of titanium welds.
Hardening of high caratage gold alloys.
Grain refinement of titanium alloys.
Welding of PGM-alloyed superduplex stainless steels.

Research Students

  • Zeinab Babasafari : Recycling automobile plastic waste with a view to utilize the off-gas to surface harden steel components.
  • Cornelis Van Niekerk : The Role of Welding Parameters and Weld Metal Microstructure on the Incidence of Weld Metal Hydrogen-assisted Cold Cracking in X70 Welds.