PSI - Issue 68

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2025) 000–000 Available online at www.sciencedirect.com ScienceDirect

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Procedia Structural Integrity 68 (2025) 592–595

European Conference on Fracture 2024 The Evaluation of the Fracture Characteristics of Metal-Ceramic Composites Produced by Additive Manufacturing Masoomeh Farrokhtar a , Gabriella Bolzon a *, Lisa Biasetto b , Vanessa Gastaldi b a Politecnico di Milano, Department of Civil and Environmental Engineering, piazza L. da Vinci 32, 20133 Milano, Italy b University of Padova, Department of Industrial Engineering, via Marzolo 9, 35131 Padova, Italy Abstract The use of Direct Ink Writing (DIW) 3D printing technology allows for the fabrication of intricate structures made of metals and ceramics. Core-shell structures for biomedical applications, made of 316L steel and sphene (CaTiSiO5) are produced by co-axial DIW and reactive sintering within the MULTIFUN3D project. Other metal-ceramic combinations are considered as well. The assessment of the overall ductility and fracture characteristics of these composites deserves specific investigations. In the present work, the indirect evaluation of the fracture characteristics is performed by combining the output of small-size (in the mm range) bending tests with the numerical simulation of the experiments. © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ECF24 organizers Keywords: Mechanical characterization; Metal-Ceramic Composite; Fracture characteristics; Additive manufacturing 1. Introduction The development of metal-ceramic composites has gained considerable interest due to wide number of application fields. In the production of medical implants, adding ceramic to metal enhances both the mechanical strength, the biocompatibility and the bioactivity of the material, Rieu and Goeuriot (1993), Bandyopadhyay et al. (2023). In this context, Direct Ink Writing (DIW) 3D printing technology has been applied within the MULTIFUN3D project for the © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ECF24 organizers

* Corresponding author. Tel.: +39-02-239-94319; fax: +39-02-2399-4300. E-mail address: gabriella.bolzon@polimi.it

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ECF24 organizers

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ECF24 organizers 10.1016/j.prostr.2025.06.102