Research

Ter Haar, G.M., Becker, T.H. 2021. The influence of microstructural texture and  prior beta grain recrystallisation on the deformation behaviour of laser powder bed fusion produced Ti-6Al-4V. Materials Science and Engineering: A. 814(1): 141185. https://doi.org/10.1016/j.msea.2021.141185

Becker, T.H., Marrow, T.J. 2021. A Robust Finite Element-based Filter for Digital Image and Volume Correlation Displacement Data. Experimental Mechanics. 1-16. https://doi.org/10.1007/s11340-021-00718-5 

Macallister, N., Vanmeensel, K., Becker, T.H. 2021. Fatigue crack growth parameters of Laser Powder Bed Fusion produced Ti-6Al-4V. International Journal of Fatigue. 145: 106100

Atkinson, D., Becker, T.H. 2021. Stereo Digital Image Correlation in MATLAB. Applied Sciences. 11(11): 4904.

Atkinson, D., Becker, T.H. 2021. Correction: Atkinson, D.; Becker, T. A 117 Line 2D Digital Image Correlation Code Written in MATLAB. Remote Sens. 2020, 12, 2906. Remote Sensing. 13(10): 1964.

Becker, T.H., Dhansay, N.M. 2020. Influence of porosity on the fatigue life of laser powder bed fusion–produced Ti6Al4V. Material Design & Process Communications. pp. 1–7.

Ter Haar, G.M., Becker, T.H. 2020. Low-temperature stress relief and martensitic decomposition in selective laser melting produced Ti6Al4V. Material Design & Process Communications. pp. 2–7.

Bezuidenhout, M., Ter Haar, G.M., Becker, T.H., Rudolph, S., Damm, O., Sacks, N. 2020. The Effect of HF-HNO3 Chemical Polishing on the Surface Roughness and Fatigue Life of Laser Powder Bed Fusion Produced Ti6Al4V. Materials Today Communications. 25: 101396

Becker, T.H., Dhansay, N.M.,  Ter Haar, G.M.,  Vanmeensel., K. 2020. Near-threshold fatigue crack growth rates of Laser Powder Bed Fusion produced Ti-6Al-4V. Acta Materialia. 197: 269—282

Van Rooyen, M., Becker, T.H., Westraadt, J.E. Marx, G. 2020. Measurement of creep deformation of ex-service 12% Cr steel using digital image correlation. The Journal of Strain Analysis for Engineering Design. 55(3-4): 71-85.

Becker, T.H., Molteno, M.R., Marrow, T.J. 2020. Procedure for accurate calculation of the J‐integral from digital volume correlation displacement data. Strain. 56(2): e12337

Atkinson, D., Becker, T.B. 2020. A 117 Line 2D Digital Image Correlation Code Written in MATLAB. Remote Sensing. 12(18): 2906

Van Rooyen, M., Becker, T.H., Westraadt, J. Marx, G. 2019. Creep damage assessment of ex-service 12% Cr power plant steel using digital image correlation and quantitative microstructural evaluation. Materials. 12(19): 3106

Montero-Sistiaga, M.L., Dhansay, N.M., Bautmans, L., Nardone, S., Becker, T.H., Kruth, J.P., Vanmeensel, K. 2019. Fatigue performance of micro-crack free Hastelloy X produced by selective laser melting (SLM). Proceedings of European Conference on Structural Integrity of Additively Manufactured Materials (ESIAM19). Trondheim. Norway

Conradie, J.H., Becker, T.H., Turner, D.Z. 2019. Peridynamic approach to predict ductile and mixed-mode failure. R&D Journal, 35: 1-8

Ramosena, L.A., Parker, B.S., Dzogbewu, T.C., du Preez, W.B., Blaine, D.C. 2019. Optimum process parameters for DMLS in-situ alloying of a Ti-10 (60Al40V) powder blend. Rapid Product Development Association of South Africa. pp. 78-93

Du Plessis, A., Yadroitsava, I., Yadroitsev, I., Le Roux, S.G., Blaine, D.C. 2018. Numerical comparison of lattice unit cell designs for medical implants by additive manufacturing. Virtual and Physical Prototyping. 13(4): 266-281.

Dimitrov, D., Uheida, E., Oosthuizen, G., Blaine, D.C., Laubscher, R., Sterzing, A., Blau, P., Gerber, W., Damm., O.F.R.A. 2018. Manufacturing of high added value titanium components. A South African perspective. IOP Conference Series: Materials Science and Engineering, vol. 430(1), pp. 12009

Ter Haar, G.M., Becker, T.H. 2018). Selective Laser Melting-produced Ti-6Al-4V: Novel Post-process Heat Treatments to Achieve Superior Tensile Properties. Proceedings of the  Direct Digital Manufacturing Conference. March 2018. Berlin Germany. Ed .: Bernhard Müller; Fraunhofer IWU, Chemnitz, p. 484. ISBN 978-3-8396-1320-7.

Huchzermeyer, R.L., Becker, T.H. 2018. The application of full-field techniques to estimate both tensile and fracture properties: An investigation into modifications to standard sample geometries. Experimental Techniques. 42(6): 671-683

Bladergroen, M.,Basson, A., Blaine., D.C. 2018. Towards overcoming millennial classroom barriers: reflections from Engineering Students on blended teaching and learning innovations. Critical Studies in Teaching and Learning. 6(1): 18-34.

Van Rooyen M., Becker, T.H. 2018. High-temperature tensile property measurements using digital image correlation over a non-uniform temperature field. The Journal of Strain Analysis for Engineering Design. pp. 1 – 13.

Monaheng, L.F., Du Preez, W.B., Becker, T.H. 2018. Validation through digital image correlation of finite element analysis used in the design of a Ti6Al4V mandibular implant. 11th South African Conf. Comput. Appl. Mech. SACAM.

Anderson, L., Venter, A., Vrancken, B., Marais, D., Humbeeck, J., Becker, T.H. 2018. Investigating the Residual Stress Distribution in Selective Laser Melting Produced Ti-6Al-4V using Neutron Diffraction. Materials Research Proceedings. 4: 73-78.

Ter Haar, G.M., Becker T.H. 2018. Selective laser melting produced Ti6Al4V: Post-process heat treatments to achieve superior tensile properties. Materials. 11(1): 146 – 160.

Blaine, D.C. 2017. Reflections on solving problems: Teaching and learning. Conference Review Procedure. pp. 29

Ter Haar, G.M. 2016. Selective Laser Melting – Produced Ti-6Al-4V: Influence of annealing strategies on crystallographic microstructure and tensile behaviour. Master’s thesis. University of Stellenbosch.

Ter Haar, G.M., Becker, T.H., Blaine, D.C. 2016. Influence of heat treatments on the microstructure and tensile behaviour of selective laser melting-produced Ti-6Al-4V parts. South African Journal of Industrial Engineering. 27(3) Special Edition:  174-183.

Becker, T.H., Dimitrov, D., Yadroitsev, I., Booysen, G. 2016. On the impact of different system strategies on the material performance of SLM manufactured Ti6Al4V components. 17th Annual Conference of the Rapid Product Development Association of South Africa.

Ha, S., Park, S.J., Blaine, D.C., Bollina, R. German, R.M. 2016. Two-phase master sintering curve for 17-4 PH stainless steel. Metallurgical and Materials Transactions A. 47(11): 5548-5556.

Blaine, D.C. 2016. Tool Wear During Machining of Sintered Titanium and Ti6Al4V Alloy. The European Powder Metallurgy Association. pp. 1-6

Anderson L., Becker, T.H. 2016. Micro-Scale Residual Stress Analysis of SLM Manufacture Ti-6Al-4V. 17th Annual Conference of the Rapid Product Development Association of South Africa.

Becker, T.H., Dimitrov, D. 2016. The achievable mechanical properties of SLM produced Maraging Steel 300 components. Rapid Prototyping Journal. 22(3): 487-494. https://doi.org/10.1108/RPJ-08-2014-0096

Molteno, M.R., Marrow, T.J., Becker, T.H. 2016. Experimental validation of the decomposition method on digital volume correlation displacement data. Conference Proceedings of the 11th British Soceity of Strain Measurement.

Becker, T.H., Naicker, L., Barhli, S.M., Marrow, T.J. 2016. Stress corrosion cracking investigation of FV520B stainless using digital image correlation and the J-integral. Conference Proceedings of the 11th British Soceity of Strain Measurement.

Mugwagwa, L., Dimitrov, D., Matope, S., Becker, T.H. 2016. A methodology to evaluate the influence of part geometry on residual stresses in selective laser melting. In Competitive Manufacturing, International Conference on Competitive Manufacturing (COMA ’16).

du Plessis, A., le Roux, S.G., Els, J., Booysen, G., Blaine, D.C. 2016. Comparison of medical and industrial X-ray computed tomography for non-destructive testing. Case Studies in Nondestructive Testing and Evaluation. 6: 17-25.

Barhli, S.M., Saucedo-Mora, L., Simpson, C., Becker, T.B., Mostafavi, M., Withers, P.J., Marrow, T.J. 2016. Obtaining the J-integral by diffraction-based crack-field strain mapping. Procedia Structural Integrity. 2: 2519-2526

Du Plessis, A., le Roux, S.G., Els, J., Booysen, G., Blaine, D.C. 2015. Application of microCT to the non-destructive testing of an additive manufactured titanium component. Case Studies in Nondestructive Testing and Evaluation. 4: 1-7.

Hindley, M.P., Blaine, D.C., Groenwold, A.A., Becker, T.H. 2015. Failure prediction of full-size reactor components from tensile specimen data on NBG-18 nuclear graphite. Nuclear Engineering and Design. 284: 1-9.

Molteno, M., Becker, T.H. (2015). Mode I–III Decomposition of the J‐integral from DIC Displacement Data. Strain. 51(6): 492-503.

Becker, T.H., van Rooyen, M., Dimitrov, D. 2015. Heat treatment of Ti-6Al-4V produced by lasercusing. South African Journal of Industrial Engineering. 26(2): 93-103.

Beck, M., Scheffer, C., Becker, T.H. 2015. Microstructure and mechanical properties of direct metal laser sintered Ti-6Al-4V: featured article. South African Journal of Industrial Engineer. 26(1): 1-10

Hindley, M.P., Blaine, D.C., Groenwold, A.A., Becker, T.H. 2015. Failure prediction of full-size reactor components from tensile specimen data on NBG-18 nuclear graphite. Nuclear Engineering and Design. 284: 1-9

Molteno, M., Becker, T.H. 2015. Mode I-III Decomposition of the J -integral from Digital Image Correlation Displacement Data. International Conference on Computational Modeling of Fracture and Failure. pp. 33/309-34/309

Molteno, M.R., Becker, T.H. 2015. Mode I-III decomposition of the J-integral to calculate the stress intensity factors from digital image correlation displacement data. 10th International Conference on Advances in Experimental Mechanics

Van Rooyen, M., Becker, T.H. 2015. A 3D-DIC Method for High Temperature Application. 10th International Conference on Advances in Experimental Mechanics.

Dhansay, N.M., Tait, R., Becker, T.H. 2014. Fatigue and Fracture Toughness of Ti-6Al-4V Titanium Alloy Manufactured by Selective Laser Melting. Advanced Materials Research. 1019: 248-253.

Motleno, M., Becker, T.H. 2014. Implementation of the extreme learning machine for sub-pixel interpolation for digital image correlation. ICEM16, Cambridge, UK.

Van Rooyen, M., Becker, T.H., Dimitrov D. 2014. On the heat treatment of lasercusing produced Ti-6Al-4V components. Proceedings of RAPDASA.

Hindley MP, Groenwold AA, Blaine DC, Becker, T.H. 2014. Optimisation of the link volume for weakest link failure prediction in NBG-18 nuclear graphite. Nuclear Engineering and Design. 274: 10-19.

Bosman,H.L., Blaine, D.C. 2014. Influence of powder particle size distribution on the properties of press-and-sintered titanium and Ti-6Al-4V preforms. Advanced Materials Research. 1019: 225-230. https://doi.org/10.4028/www.scientific.net/AMR.1019.225

Dimitrov, D., Becker, T.H., Bezuidenhout, M., Hugo, P. 2014. From Rapid Prototyping to Rapid Manufacturing—An Industrial and Academic Perspective. International Conference on Progress in Additive Manufacturing (Pro‑AM 2014). 370 – 379.

Hindley, M.P., Mitchell, M.N., Erasmus, C., McMurtry, R., Becker, T.H., Blaine, D.C., Groenwold, A.A. 2013. A numerical stress based approach for predicting failure in NBG-18 nuclear graphite components with verification problems. Journal of Nuclear Materials. 436(1-3): 175-184.

Blaine, D.C., Bosman, H.L., Laubscher, H.H. 2014. Process Models for Press-and-Sinter Titanium. Advanced Materials Research. 1019: 231-240.

Crombie, C.T.C., Blaine, D.C. 2014. Thermo-Gravimetric Analysis and Debinding Study of Powder Injection Moulded Titanium Alloy. Advanced Materials Research. 1019: 210-217.

Kemp, I., Dellimore, K., Rodriguez, R., Scheffer, C. Blaine D..C., Weich, H., Doubell A. 2013. Experimental validation of the fluid–structure interaction simulation of a bioprosthetic aortic heart valve. Australasian physical & engineering sciences in medicine. 36(3): 363-373.

Hindley, M.P., Mitchell, M.N., Erasmus, C., McMurtry, R. Becker, T.H., Blaine, D.C, Groenwold, A.A. 2013. A numerical stress based approach for predicting failure in NBG-18 nuclear graphite components with verification problems. Journal of nuclear materials. 436(1-3): 175-184. https://doi.org/10.1016/j.jnucmat.2012.10.030

Blaine, D.C., Ilchev, A., Petrik, L., Ndungu, P., Nechaev, A. 2012. Deposition of Platinum Nanoparticles onto Copper Foils by Electrophoresis: A Study of the Sintering Dynamics at the Platinum‐Copper Interface. Advances in Sintering Science and Technology II: Ceramic Transactions. 232: 1-16.

Dimitrov, D.M., Neugebauer, R., Treppe, F., Schmidt, G., Treurnicht, N.F., Blaine, D.C., Saxer, M. 2012. Development of roadmaps for cost minimisation of titanium machining for aerospace applications. ICMC.

Hindley, M.P., Mitchell, M.N., Blaine, D.C., Groenwold, A.A. 2012. Observations in the statistical analysis of NBG-18 nuclear graphite strength tests. Journal of nuclear materials. 420(1-3): 110-115.

Smuts, A.N., Blaine, D.C., Scheffer, C., Weich, H., Doubell, A.F., Dellimore, K.H. 2011. Application of finite element analysis to the design of tissue leaflets for a percutaneous aortic valve. Journal of the mechanical behavior of biomedical materials. 4(1): 85-98.

Sobiyi, K.K., Blaine, D.C. 2010. Initial Studies in Powder Metallurgy processing of titanium. Proceedings of The Southern African Institute of Mining and Metallurgy. Advanced Metals Initiative. pp. 105-119.

Blaine, D.C., Park, S.J., German, R.M. 2009. Linearization of master sintering curve. Journal of the American Ceramic Society. 92(7): 1403-1409.