PSI - Issue 33

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2021) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural I tegrity Procedia 00 (2021) 000–000

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ScienceDirect

Procedia Structural Integrity 33 (2021) 605–612

© 2021 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 the scientific committee of the IGF ExCo Abstract Finite element parametric analysis is performed on a cracked bi-material bar subjected to pure bending in order to investigate the fatigue behaviour of a short crack in the thin protective layer laser-cladded on a steel substrate. Elastic properties of the surface layer are chosen with regard to real combinations of materials when bronze, nickel or cobalt alloys are applied as the surface layers to improve the properties of the basic steel substrate and the influence of their mismatch is analysed. Classical linear elastic fracture mechanics theory is applied, and several conclusions are stated that shall help to select a suitable material of the protective layer. The conclusions can be applied analogically to any other bi-material combination. © 2021 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 Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo Keywords: bi-material; laser cladding; crack; fracture mechanics, fatigue 1. Introduction Various structural elements that combine often contradictory properties are more and more common in technical practice, see e.g. Bhat et al. (2019) or Khodadad Motarjemi et al. (2002). One of possibilities how to connect various Abstract Finite element parametric analysis is performed on a cracked bi-material bar subjected to pure bending in order to investigate the fatigue behaviour of a short crack n the thin pr tective layer laser-cladded on a ste l subst ate. Elastic pr p ties of the surfac l yer are chosen with regard to real comb ations of materia s when bronze, nick l or cob lt alloys are a plied as s to improve the properties of the basic steel substrate and the influence of their mismatch i nalysed. Classical linear elastic fracture m c anics theory is applied, and s veral conclusions are stated that s all help to select a suitable m teri of the prote tive lay r. The conclusi ns can be applied analogically to any oth r bi-material combinati n. © 2021 The Authors. Pub ished 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 Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo K ywords: bi-material; laser cladding; crack; fracture mechanics, fatigue 1. Introduction Various structural elements that combine often contradictory properties are more and more common in technical practice, see e.g. Bhat et al. (2019) or Khodadad Motarjem et al. (2002). One of possibilities how to c nect various IGF26 - 26th International Conference on Fracture and Structural Integrity Influence of the bi-material interface on the crack propagation through a thin protective layer Lucie Malíková a,b, *, Petr Miarka a,b , Pavel Doubek b,c , Stanislav Seitl a,b a Institute of Physics of Materials Czech Academy of Sciences, v. v. i., Zizkova 513/22, 616 00 Brno, Czech Republic b Brno University of Technology, Faculty of Civil Engineering, Institute of Structural Mechanics, Veveri 331/95, 602 00 Brno, Czech Republic c OMNI-X CZ s.r.o., Samalova 60a, 615 00 Brno, Czech Republic IGF26 - 26th International Conference on Fracture and Structural Integrity Influence of the bi-material interface on the crack propagation through a thin protective layer Lucie Malíková a,b, *, Petr Miarka a,b , Pavel Doubek b,c , Stanislav Seitl a,b a Institute of Physics of Materials Czech Academy of Sciences, v. v. i., Zizkova 513/22, 616 00 Brno, Czech Republic b Brno University of Technology, Faculty of Civil Engineering, Institute of Structural Mechanics, Veveri 331/95, 602 00 Brno, Czech Republic c OMNI-X CZ s.r.o., Samalova 60a, 615 00 Brno, Czech Republic

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* Corresponding author. Tel.: +420541147381; fax: +420541240994. E-mail address: malikova.l@fce.vutbr.cz * Corresponding author. Tel.: +420541147381; fax: +420541240994. E-mail address: malikova.l@fce.vutbr.cz

2452-3216 © 2021 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 Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo 2452-3216 © 2021 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 Statement: Peer-revi w under responsibility of the scientifi committee of the IGF ExCo

2452-3216 © 2021 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 the scientific committee of the IGF ExCo 10.1016/j.prostr.2021.10.067