Vaal University of Technology

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Research

NDT staff members are involved in research in a number of various capacities and at various levels. Our NDT program and research go hand-in-hand and our department is driven forward by its research. The research ambition of the department of NonDestructive Testing and Physics is motivated by the challenges facing Nondestructive testing technology (NDTT). The department is taking special pride in pioneering new frontiers in Nondestructive Testing in order to create new ideas and enhance Nondestructive Evaluation Education. The department is also identifying multidisciplinary NDT solutions in order to promote safety of humankind. The multidisciplinary research collaboration includes Engineering, Mathematics, Physics and Information Technology staff.

The focus research area for the department is as follows “Theoretical, experimental and numerical applications of NDT methods”.

All NDT staff members are actively engaged in research which has resulted in the following research papers:


(a) Assessing semi-elliptical surface cracks in thin-walled pressure vessels using fracture mechanics-based methods , BR Mabuza, N Netshidavhini (International Conference on fatigue damage of structural materials X, 2014), USA.

(b) Characterization of corrosion pits on steel pipe used in the petrol industry, N Netshidavhini, BR Mabuza, (International Conference on fatigue damage of structural materials X, 2014), USA.

(c) Vaal University of Technology, South Africa, International Conference on Computational and Mathematical methods in Science and Engineering (ICCMSE), 25 – 27 September 2013, “Mathematical analysis of fracture strength in the presence of cracks”, N Netshidavhini.

(d) Vaal University of Technology, South Africa, International Conference on Computational and Mathematical methods in Science and Engineering (ICCMSE), 25 – 27 September 2013, “Fracture Mechanics: A revolution in Nondestructive Testing”, BR Mabuza.

(e) 1st South African Biennial Conference on Imaging with Radiation (IMGRAD-1), 23 – 27 September 2013, “Radiographic flaw detection of a friction stir welded Ti-6Al-4V plate”, Vaal University of Technology, IQ Sikakana, FV Cawe, R Baloyi, MF Tshatsinde.

(f) ICA 2013, Montréal, 21st International congress on Acoustics, Palais de congress de Montréal, Québec de Montréal, 2-7 June 2013, “Detection of defects in Aerostructures using non-contact”, The journal of the Acoustic Society, N Netshidavhini, BR Mabuza.

(g) ICA 2013, Montréal, “The effect of a middle layer on ultrasonic wave propagating in a three-layered structure”, 2 – 7 June 2013, Montréal, Canada, BR Mabuza, N Netshidavhini.

(h) 18th World Conference on Nondestructive Testing, 16 – 20 April 2012, ICC Durban, South Africa, “Characterization of damages in Honecomb structures using Sonatest Dryscan 410D”, W Sithole, N Netshidavhini, BR Mabuza.

(i) 18th World Conference on Nondestructive Testing, 16 – 20 April 2012, ICC Durban, South Africa, “The effect of variations of crack geometry on the stress concentration factor in a thin plate using finite element method”, M Mbandezi and BR Mabuza.

(j) 18th World Conference on Nondestructive Testing, 16 – 20 April 2012, ICC Durban, South Africa “Effects of various couplants on carbon steel, Perspex and Aluminium materials by means of ultrasonic testing”, Department of NDT and Physics, Vaal University of Technology, Johannesburg, South Africa, N Netshidavhini and BR Mabuza.

(k) 18th World Conference on Nondestructive Testing, 16 – 20 April 2012, ICC Durban, South Africa. “Numerical analysis of probability of detecting defects in Engineering materials”, Department of NDT and Physics, Vaal University of Technology, Johannesburg, South Africa, BR Mabuza.

(l) 18th World Conference on Nondestructive Testing, 16 – 20 April 2012, ICC Durban, South Africa, ”Demonstration of the capability of phased array technique for detecting defects in thick-section welds”, Department of NDT and Physics, Vaal University of Technology, Vaal University of Technology, Johannesburg, South Africa, M Bokaba, N Netshidavhini and BR Mabuza.

(m) 18th World Conference on Nondestructive Testing, 16 – 20 April 2012, “Evaluation of an X-ray digital radiography system”, Durban, South Africa, IQ Sikakana, M Thebe.

(n) 18th World Conference on Nondestructive Testing, 16 – 20 April 2012, “Radiation safety practices of industrial radiography license holders in South Africa”, Durban, South Africa, IQ Sikakana, EA Mosokotso, W Mogoru, H Neeson.

(o) Detection and characterization of flaws in the aluminium aircraft structures, B.R Mabuza N Netshidavhini, (ENDE 2012), Brazil.

(p) Emerging Technologies in Nondestructive Testing V, Ioannina, Greece, 19 – 21 September 2011, “Inspection for flaws in steel using ultrasonic testing and fracture mechanics approach”, BR Mabuza and N Netshidavhini.

(q) Emerging Technologies in Nondestructive Testing V, Ioannina, Greece, 19 – 21 September 2011, “Detection and characterization of surface defects in steel using ultrasonic surface waves”, N Netshidavhini and BR Mabuza.

(r) The International Congress on Acoustics (ICA), 23 – 27 August 2010, Sydney Convention Centre, Sydney, New South Wales, Australia, “On the study of longitudinal waves travelling through an elastic plate immersed in water”, BR Mabuza and N Netshidavhini

(s) 4th NDT Conferences, 20 – 23 September 2010, Garden court OR Tambo International airport, “Optical Testing Technology, How will this method work for your company?”, Vaal Univesity of Technology, BR Mabuza.

(t) 2nd Nondestructive Testing (NDT) Conference, Institute for International Research BV, 14 – 16, April 2008, Southern Sun Grayston, Sandton, Johannesburg, USA, “Clarification of training issues and research in NDT methodologies”, Vaal University of Technology, BR Mabuza.

(u) The International Conference on Theoretical and Computational Acoustics (ICTCA), 2 – 5 July 2007, Heraklion, Crete, Greece, “One-dimensional profile inversion for a stack of layers”, BR Mabuza and M Braun.

(v) International Science and Technology Conference, 2004, Vaal University of Technology, ISBN 0-620-33202-6, Vanderbijlpark, 2 – 4 December 2004, “The one-dimensional inverse scattering problem”, BR Mabuza, M Braun, UNISA and SA Sofianos.

(w) Faculty of Applied and Computer Sciences Mini Seminar, Vaal Triangle Technikon, 6 November 2001, “On the direct and inverse scattering problems”, Vaal University of Technology, BR Mabuza.

(x) IQ Sikakana, “A diagnosis of the South African Non-destructive Testing Community”, Department of NDT and Physics, Vaal University of Technology.

• Two of staff members received merit certificates for outstanding contributions at the 18th WCNDT held in Durban South Africa in 2012, April 19 – 20.

• Prof BR Mabuza gave an Augural Address titled “Development of NDT in South Africa: Problems and vicissitudes of applying new NDT research”.