PSI - Issue 43

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000

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ScienceDirect

Procedia Structural Integrity 43 (2023) 95–100

© 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 the responsibility of MSMF10 organizers. © 20 23 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under the responsibility of MSMF10 organizers. Abstract The problem of a crack subj cted to uniaxi l te sion, approaching an interface between the two materials at an arbitrary angle, is considered. Prediction of the crack propagation was based on the inear elastic fracture m chanics (LEFM) conce t. Obtained results show that the crack that attacks the interface at a right angle, coming from the softer mater al, would not penetrate th inte face nd w uld not continue to propagate across it, but that it would bounce back to the material it is coming from and continue to prop gate along the path close to the int rface. The similar situation is for the crack at acking the interface at an ngle of 7 5°. It would also bounce away from the interface, though it might also d flect into it if the interface was weak. For the attack angle of 6 0°, as well as for the smaller an les, the crack woul penetra e the interf c nd conti ue to propagate in the mat rial across it. The pred cti n of the crack propagation direction was done for the two bimat rial c mbin tions. Based on results, presented in this paper, it is possible to establish the criteria for predicting the propagation direction of a crack attacking the interface at an arbitrary angle. © 20 23 The Authors. Published by Elsevier B.V. This is an ope access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under the responsibility of MSMF10 organizers. 10th International Conference on Materials Structure and Micromechanics of Fracture Prediction of the propagation direction of a crack that attacks the interface at an arbitrary angle Jelena M. Djoković a , Ružica R. Nikolić b * 1 Technical Faculty of Bor, University of Belgrade, Vojske Jugoslavije 12, 19210 Bor, Serbia 2 University of Žilina, Research Centre, Univerzitna 8215/1, 010 26 Žilina, Slovakia Abstract The problem of a crack subjected to uniaxial tension, approaching an interface between the two materials at an arbitrary angle, is considered. Prediction of the crack propagation was based on the linear elastic fracture mechanics (LEFM) concept. Obtained results show that the crack that attacks the interface at a right angle, coming from the softer material, would not penetrate the interface and would not continue to propagate across it, but that it would bounce back to the material it is coming from and continue to propagate along the path close to the interface. The similar situation is for the crack attacking the interface at an angle of 7 5°. It would also bounce away from the interface, though it might also deflect into it if the interface was weak. For the attack angle of 6 0°, as well as for the smaller angles, the crack would penetrate the interface and continue to propagate in the material across it. The prediction of the crack propagation direction was done for the two bimaterial combinations. Based on results, presented in this paper, it is possible to establish the criteria for predicting the propagation direction of a crack attacking the interface at an arbitrary angle. 10th International Conference on Materials Structure and Micromechanics of Fracture Prediction of the propagation direction of a crack that attacks the interface at an arbitrary angle Jelena M. Djoković a , Ružica R. Nikolić b * 1 Technical Faculty of Bor, University of B lgrad , Vojske Jugoslavije 12, 19210 Bor, Serbia 2 University of Žilina, Research Centre, Univerzitna 8215/1, 010 26 Žilina, Slovakia

Keywords: Interface crack; arbitrary attacking angle; stress intensity factor; LEFM concept Keywords: Interface crack; arbitrary attacking angle; stress intensity factor; LEFM concept

* Corresponding author. Tel.: +421-948-610-520. E-mail address: ruzica.nikolic@uniza.sk * Correspon ing a thor Tel.: +421-948-610-520. E-mail address: ruzica.nikolic@uniza.sk

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 the responsibility of MSMF10 organizers. 2452-3216 © 2023 The Authors. Published by Elsevier B.V. This is an ope access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of MSMF10 organizers.

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 the responsibility of MSMF10 organizers. 10.1016/j.prostr.2022.12.241