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Browsing by Author "Yadroitsev, I."

Browsing by Author "Yadroitsev, I."

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  • 3D Printed Laryngoscope For Endotracheal Intubation 
    Huysamen, H.W.; Kinnear, W.A.; Fonternel, T.E.; Turton, E.W.; Yadroitsava, I.; Yadroitsev, I. (South African Journal of Industrial Engineering November 2020 Vol 31(3) Special Edition, pp 209-217, 2020-11-11)
    This study aims to determine whether additive manufacturing can be used to produce a safe and reliable video laryngoscope. Different designs were proposed and evaluated with a mannequin for usability. Finite element analysis ...
  • Deformation Behavior and Microstructure of Ti6Al4V Manufactured by SLM 
    Krakhmalev, P.; Fredriksson, G.; Yadroitsava, I.; Kazantseva, N.; du Plessis, A.; Yadroitsev, I. (Elsevier B.V: Physics Procedia, 2016)
    Mechanical properties, porosity, and microstructure of Ti6Al4V (ELI) material produced by Selective Laser Melting (SLM) under controlled oxygen content were analyzed. Fully martensitic α’structure with high dislocation ...
  • Evaluation of single tracks of 17-4PH steel manufactured at different power densities and scanning speeds by selective laser melting 
    MakoanaI, N.W.; Moller, H.; Burger, H.; TlotlengI, M.; Yadroitsev, I. (South African Journal of Industrial Engineering, 2016)
    In Selective Laser Melting, the initial units produced are single tracks that overlap to create a single layer; from the sequence of layers, a 3D object is manufactured. The properties of the parts produced by SLM depend ...
  • Evaluation Of The Impact Of Scanning Strategies On Residual Stresses In Selective Laser Melting 
    Mugwagwa, L.; Dimitrov, D.; Matope, S.; Yadroitsev, I. (The International Journal of Advanced Manufacturing Technology, 2019-01-23)
    The occurrence of residual stresses in selective laser melting (SLM) presents challenges that limit the capability of the process to manufacture parts at industrial scale. These stresses can have irreversible effects such ...
  • Fracture Mechanisms In The As-Built And Stress-Relieved Laser Powder Bed Fusion Ti6Al4V ELI Alloy 
    Vilardell, A.M.; Fredriksson, G.; Yadroitsev, I.; Krakhmalev, P. (Optics and Laser Technology, 2018-08-29)
    The influence of a stress-relief treatment on impact and fatigue properties of Ti6Al4V ELI samples manufactured by laser powder bed fusion was analyzed. The heat treatment resulted in removal of residual stresses, ...
  • In Vitro Characterization of In Situ Alloyed Ti6Al4V(ELI)-3 at.% Cu Obtained by Laser Powder Bed Fusion 
    Vilardella, A.M.; Yadroitsev, I.; Yadroitsava, I.; Albu, M.; Takata, N.; Kobashi, M.; Krakhmalev, P.; Kouprianoff, D.; Kothleitner, G.; du Plessis, A. (Additive Manufacturing 36 (2020) 101436, 2020-07-03)
    Biofunctionalization of Ti6Al4V alloy with metallic agents like Ag or Cu is a promising approach to add antibacterial properties and thus to reduce the risk of implant failure. This research investigates the in-situ ...
  • IN-SITU ALLOYING PROCESS OF TI6AL4V-xCU STRUCTURES BY DIRECT METAL LASER SINTERING 
    Kinnear, A.; Dzogbewu, T. C.; Yadroitsava, I.; Yadroitsev, I. (SUNConferences, 17th Annual Conference of the Rapid Product Development Association of South Africa, 2016)
    In this paper the fabrication of in-situ Ti6Al4V-xCu alloy structures by DMLS are investigated. Ti6Al4V is a commonly used biomedical alloy because of it suitable mechanical and biocompatible properties. Copper is a proven ...
  • Influence Of Large Artificial Porosity On Bending Behaviour Of Ti6Al4V Eli Additively Manufactured Specimens Subjected To Typical Loads During Mastication 
    Wessels, J.A.; du Plessis, A.; Yadroitsava, I.; Els, J.; Yadroitsev, I. (South African Journal of Industrial Engineering November 2020 Vol 31(3) Special Edition, pp 242-252, 2020-11-11)
    Effective quality control of implants made using additive manufacturing is an important task for suppliers to comply fully with existing regulations and certifications. To study the influence of porosity on the mechanical ...
  • Investigating of the Effect of Scan Vector Length on Residual Stresses in Selective Laser Melting of Maraging Steel 300 
    Mugwagwa, L.; Dimitrov, D.; Matope, S.; Yadroitsev, I. (South African Journal of Industrial Engineering, 2019-12)
    Selective laser melting scanning strategies influence the quality characteristics of parts, such as form accuracy and residual stresses. Previous research on the effect of laser scanning strategy parameters (such as scan ...
  • Laser-assisted synthesis in CueAleNi system and some of its properties 
    Sky, I. Shishkov; Yadroitsev, I.; Morozov, Yu. (Elsevier B.V: Journal of Alloys and Compounds, 2016)
    Conditions of intermetallic phase synthesis during layerwise selective laser sintering/melting in CueAl eNi powdered system were explored. There to we used optical and scanning electron microscopy, EDX and XRD analysis ...
  • Layer-by-layer laser synthesis of Cu–Al–Ni intermetallic compounds and shape memory effect 
    Volyanski, I.; Shishkovsky, I. V.; Yadroitsev, I.; Shcherbakov, V. I.; Morozov, Yu. G. (Springer International Publishing AG: Inorganic Materials, 2016)
    We have studied conditions for the synthesis of intermetallic phases in the Cu–Al–Ni system by selective laser sintering/melting, in particular by heating a powder mixture to 300°C. The effects of laser synthesis and heating ...
  • Magnetoelectric Effect in Two-Layer Composites with a Graded Magnetic Phase 
    Shut, V. N.; Trublovsky, V. L.; Laletin, V. M.; Yadroitsev, I. (Physics of the Solid State, 2020, Vol. 62, No. 11, pp. 2063–2069., 2020-07-09)
    Samples of a homogeneous (x = 0, 0.1, and 0.2) and multilayer ceramics with a gradient composition (x = 0.2 → 0.1 → 0 → 0.1 → 0.2) based on solid solutions of (Ni1 − xZnx)Fe2O4 nickel–zinc ferrites have been manufactured ...
  • Manufacturing, microstructure and mechanical properties of selective laser melted Ti6Al4V-Cu 
    Kinnear, A.; Dzogbewu, T. C.; Krakhmalev, P.; Yadroitsava, I.; Yadroitsev, I. (LiM "Lasers in manufacturing" conference, Munich,, 2017)
    Ti6Al4V is a commonly used biomedical alloy because of its suitable mechanical and biocompatible properties. Infection at the bone–implant interface is the most probable reason for implant failure directly after implantation. ...
  • METAL ADDITIVE MANUFACTURING OF BLENDED ELEMENTAL Ti-6Al-4V POWDERS 
    Zenani, A.; du Preez, W.B.; Yadroitsev, I. (2017)
    South Africa primarily produces titanium raw material as a TiO2 rich slag of which most is exported, without further value addition to the mineral. Therefore, powder development becomes a significant aspect of research ...
  • MICROSTRUCTURAL AND THERMAL STABILITY OF SELECTIVE LASER MELTED 316L STAINLESS STEEL SINGLE TRACKS# 
    Krakhmalev, P.; Yadroitsava, I.; Fredriksson, G.; Yadroitsev, I. (South African Journal of Industrial Engineering, 2017)
    To remove residual stresses, an as-built SLM object is usually post-treated. This treatment can affect the microstructure, changing the final mechanical characteristics. This investigation is focused on the microstructural ...
  • Multi material powder delivering systems for selective laser melting 
    Kinnear, A.; Yadroitsava, I.; Yadroitsev, I. (Central University of Technology, Free State, Bloemfontein: Interim : Interdisciplinary Journal, 2015)
    Selective Laser Melting (SLM) is a powder bed fusion process which is an additive manufacturing (AM) process, whereby a laser beam selectively fuses regions of a powder bed to form complex objects. Growth in the SLM field ...
  • NON-DESTRUCTIVE TESTING OF THE PARTS MANUFACTURED BY DIRECT METAL LASER SINTERING 
    Kouprianoff, D.; du Plessis, A.; Yadroitsava, I.; Yadroitsev, I. (SUNConferences, 17th Annual Conference of the Rapid Product Development Association of South Africa, 2016)
    Interest in Additive Manufacturing (AM) has grown considerably in the past decades. The industry has gained the great benefits from this type of technologies. The main advantages being geometrical freedom that allows ...
  • OPTIMAL PROCESS PARAMETERS FOR IN SITU ALLOYED Ti15Mo STRUCTURES BY LASER POWDER BED FUSION 
    Dzogbewu, T.C.; Yadroitsev, I.; Krakhmalev, P.; Yadroitsava, I.; Du Plessis, A. (Solid Freeform Fabrication 2017: Proceedings of the 28th Annual International Solid Freeform Fabrication Symposium–An Additive Manufacturing Conference, 2017)
    Powder Bed Fusion (PBF) is a manufacturing method with the advantage that it can produce objects of complex geometry. Additionally, it opens great opportunities to synthesize new materials from elemental powder using an ...
  • Oxygen and nitrogen concentrations in the Ti-6Al-4V alloy manufactured by direct metal laser sintering (DMLS) process 
    Kazantseva, N.; Krakhmalev, P.; Yadroitsev, I.; Fefelov, A.; Merkushev, A.; Ilyinikh, M.; inogradova, N.; Ezhov, I.; Kurennykh, T. (Materials Letters, 2017)
    Two machines from two scientific centers (Russia and South Africa) were used for the manufacturing of the Ti6Al4V alloys by the direct metal laser sintering. The chemical composition of powders complies with the ASTM ...
  • Qualification of Ti6Al4V ELI Alloy Produced by Laser Powder Bed Fusion for Biomedical Applications 
    Yadroitsev, I.; Krakhmalev, P.; Yadroitsava, I.; Du Plessis, A. (The Journal of The Minerals, Metals & Materials Society (TMS), 2017)
    Ti6Al4V ELI samples were manufactured by Laser Powder Bed Fusion (LPBF) in vertical and horizontal directions and subjected to various heat treatments. Detailed analyses of porosity, microstructure, residual stress, tensile ...

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