PSI - Issue 56

ScienceDirect Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com Procedia Structural Integrity 56 (2024) 111–119

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

© 2023 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 SIRAMM23 organizers Abstract The article describes a new accelerated technique for estimation of cyclic stress-strain curves of cyclically stable materials based on a full-field measurement of strain during low-cycle testing on a large amplitude of loading. Any optical method suitable for capturing the strain contours on the curved part of the specimen during cyclic loading is applicable in the approach developed. In this study, the digital image correlation method is used to measure the deformation on the curved part of the specimen. The technique is presented on chosen results of low-cycle fatigue tests performed on AlSi10Mg printed with selective laser melting technology. Proportional loading cases were performed in tension-compression and pure torsion. The case of non-proportional loading was realized in the form of 90 degree out-of-phase tests. The stress-strain behavior is evaluated using a standard procedure and an accelerated technique with a good correlation for the three loading cases. © 2023 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 SIRAMM23 chairpersons Keywords: Accelerated testing; cyclic stress-strain curve; low-cycle fatigue; non-proportional loading; DIC; full-field measurement. A technique for estimation of cyclic stress-strain curves using an optical strain measurement and its application to additively manufactured AlSi10Mg Radim Halama a * , Zbyněk Paška, Ajay Vignesh Natarajan a , Jiří Hajnyš b a Department of applied mechanics, FME, VŠB -Technical University of Ostrava, 17.listopadu 2172/15, Ostrava, Czech Republic b Department of Machining, Assembly and Engineering Metrology , FME, VŠB -Technical University of Ostrava, 17.listopadu 2172/15, Ostrava, Czech Republic Abstract The article describes a new accelerated technique for estimation of cyclic stress-strain curves of cyclically stable materials based on a full-field measurement of strain during low-cycle testing on a large amplitude of loading. Any optical method suitable for capturing the strain contours on the curved part of the specimen during cyclic loading is applicable in the approach developed. In this study, the digital image correlation method is used to measure the deformation on the curved part of the specimen. The technique is presented on chosen results of low-cycle fatigue tests performed on AlSi10Mg printed with selective laser melting technology. Proportional loading cases were performed in tension-compression and pure torsion. The case of non-proportional loading was realized in the form of 90 degree out-of-phase tests. The stress-strain behavior is evaluated using a standard procedure and an accelerated technique with a good correlation for the three loading cases. © 2023 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 SIRAMM23 chairpersons Keywords: Accelerated testing; cyclic stress-strain curve; low-cycle fatigue; non-proportional loading; DIC; full-field measurement. International Conference on Structural Integrity and Reliability of Advanced Materials obtained through Additive Manufacturing (SIRAMM23) A technique for estimation of cyclic stress-strain curves using an optical strain measurement and its application to additively manufactured AlSi10Mg Radim Halama a * , Zbyněk Paška, Ajay Vignesh Natarajan a , Jiří Hajnyš b a Department of applied mechanics, FME, VŠB -Technical University of Ostrava, 17.listopadu 2172/15, Ostrava, Czech Republic b Department of Machining, Assembly and Engineering Metrology , FME, VŠB -Technical University of Ostrava, 17.listopadu 2172/15, Ostrava, Czech Republic International Conference on Structural Integrity and Reliability of Advanced Materials obtained through Additive Manufacturing (SIRAMM23)

* Corresponding author. Tel.: +420-59-732-1288; fax: +420-59-691-6490. E-mail address: radim.halama@vsb.cz * Corresponding author. Tel.: +420-59-732-1288; fax: +420-59-691-6490. E-mail address: radim.halama@vsb.cz

2452-3216 © 2023 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 SIRAMM23 chairpersons 2452-3216 © 2023 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 SIRAMM23 chairpersons

2452-3216 © 2023 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 SIRAMM23 organizers 10.1016/j.prostr.2024.02.045