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  • 1.
    Katz-Demyanetz, Alexander
    et al.
    Technion R&D Fdn, Haifa, Israel.
    Popov, Vladimir V., Jr.
    Technion R&D Fdn, Haifa, Israel.
    Kovalevsky, Aleksey
    Technion R&D Fdn, Haifa, Israel.
    Safranchik, Daniel
    Technion R&D Fdn, Haifa, Israel.
    Koptioug, Andrei
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Management and Mechanical Engineering.
    Powder-bed additive manufacturing for aerospace application: Techniques, metallic and metal/ceramic composite materials and trends2019In: MANUFACTURING REVIEW, ISSN 2265-4224, Vol. 6, article id 5Article, review/survey (Refereed)
    Abstract [en]

    The current paper is devoted to classification of powder-bed additive manufacturing (PB-AM) techniques and description of specific features, advantages and limitation of different PB-AM techniques in aerospace applications. The common principle of "powder-bed" means that the used feedstock material is a powder, which forms "bed-like" platform of homogeneous layer that is fused according to cross-section of the manufactured object. After that, a new powder layer is distributed with the same thickness and the "printing" process continues. This approach is used in selective laser sintering/melting process, electron beam melting, and binder jetting printing. Additionally, relevant issues related to powder raw materials (metals, ceramics, multi-material composites, etc.) and their impact on the properties of as-manufactured components are discussed. Special attention is paid to discussion on additive manufacturing (AM) of aerospace critical parts made of Titanium alloys, Nickel-based superalloys, metal matrix composites (MMCs), ceramic matrix composites (CMCs) and high entropy alloys. Additional discussion is related to the quality control of the PB-AM materials, and to the prospects of new approaches in material development for PB-AM aiming at aerospace applications.

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  • 2.
    Popov, Vladimir V., Jr.
    et al.
    Technion R&D Fdn, Haifa, Israel.
    Muller-Kamskii, Gary
    Technion R&D Fdn, Haifa, Israel.
    Katz-Demyanetz, Alexander
    Technion R&D Fdn, Haifa, Israel.
    Kovalevsky, Aleksey
    Technion R&D Fdn, Haifa, Israel.
    Usov, Stas
    Vet Clin Orthovet, St Petersburg, Russia.
    Trofimcow, Dmitrii
    Vet Clin Beliy Klyk, Moscow, Russia.
    Dzhenzhera, Georgy
    Polygon Med Engn, Moscow, Russia.
    Koptioug, Andrei
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Management and Mechanical Engineering.
    Additive manufacturing to veterinary practice: recovery of bony defects after the osteosarcoma resection in canines2019In: BIOMEDICAL ENGINEERING LETTERS, ISSN 2093-9868, Vol. 9, no 1, p. 97-108Article, review/survey (Refereed)
    Abstract [en]

    The paper outlines the achievements and challenges in the additive manufacturing (AM) application to veterinary practice. The state-of-the-art in AM application to the veterinary surgery is presented, with the focus of AM for patient-specific implants manufacturing. It also provides critical discussion on some of the potential issues design and technology should overcome for wider and more effective implementation of additively manufactured parts in veterinary practices. Most of the discussions in present paper are related to the metallic implants, manufactured in this case using so-called powder bed additive manufacturing (PB-AM) in titanium alloy Ti-6AL-4V, and to the corresponding process of their design, manufacturing and implementation in veterinary surgery. Procedures of the implant design and individualization for veterinary surgery are illustrated basing on the four performed surgery cases with dog patients. Results of the replacement surgery in dogs indicate that individualized additively manufactured metallic implants significantly increase chances for successful recovery process, and AM techniques present a viable alternative to amputation in a large number of veterinary cases. The same time overcoming challenges of implant individualization in veterinary practice significantly contributes to the knowledge directly relevant to the modern medical practice. An experience from veterinary cases where organ-preserving surgery with 3D-printed patient-specific implants is performed provides a unique opportunity for future development of better human implants.

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