PSI - Issue 28

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000

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

ScienceDirect

Procedia Structural Integrity 28 (2020) 2370–2377

© 2020 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 European Structural Integrity Society (ESIS) ExCo Abstract The deterioration due to surface cracks-like flaws is an important phenomenon for the safety point of view. Thus, the main aim of the present research work is to investigate the plate failure caused by a quarter-elliptical corner crack under cyclic loading. A developed analytical algorithm integrates fracture-mechanics-based formulae, and allows to relate the crack growth rate together with the stress intensity at the crack tip and to estimate the fatigue life of structural components. Experimentally verified outcomes show that the proposed computational algorithm represents a powerful tool in the fatigue failure design. © 2020 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 European Structural Integrity Society (ESIS) ExCo Keywords: Analytical algorithm, fatigue, residual life, stress intensity analysis; 1. Introduction Performances of aeronautical structures during mandatory damage tolerance-based inspections have demonstrated their severe vulnerability to surface flaws (quarter-elliptical and semi-elliptical cracks) under service loadings. In this context, it is of a great significance to generate a reliable algorithm that could provide real-time assessments related to the failure strength of components with crack-like stress raisers. Given the complexity and harmfulness of surface flaws that cannot be avoid, several researchers provided suitable guidelines to gain more insight into the relevant quantification of this dangerous phenomenon by employing fracture mechanics-based concepts. Abstract The deterioration due to surface cracks-like flaws is an important phenomenon for the safety point of view. Thus, the main aim of the pr sent research w rk is to investigat the plate failure c used by a quarter-elliptical corner crack under cyclic loading. A develop d analyti al algorithm integrates fracture-mechanics-ba formulae, and a lows to relate the crack g owth rate together with th stress intensity a the crack tip nd to estimate the fatigue life of structural components. Expe imentally verifi d ou com s how that the propos d computatio al algorithm repr sents a pow rful tool in the fatigue failure design. © 2020 The Aut ors. 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 u der re ponsibility of European Structural Integri y So i ty (ESIS) ExCo K ywords: Analytical algorithm, fatigue, r sid al life, stress intensity analysis; 1. Introduction Performances of aeronautical structures during mandatory damage tolerance-based inspections have demonstrated their severe vulnerability to surface flaws (q arter-elliptical and semi-elliptical cr cks) und r service loa ings. In this context, it is of a great significan to generate a r iable algorith that could p ovide real-time assessment related t th failure stren th of components with c ck-lik stress raisers. Given th complexity and harmfulness of surfac flaws that cannot be avoid, several researchers provided suitable guidelines to gain more insig t into th relevant quantifica ion of this dangerous ph nom non by employing fractur mecha ic -based conc pts. 1st Virtual European Conference on Fracture Computational analysis of a surface corner crack under cyclic loading Slobodanka Boljanović a *, Andrea Carpinteri b 1st Virtual European Conference on Fracture Computational analysis of a surface corner crack under cyclic loading Slobodanka Boljanović a *, Andrea Carpinteri b a Mathematical Institute of the Serbian Academy of Sciences and Arts, Kneza Mihaila 36, Belgrade 11000, Serbia b University of Parma, Department of Engineering and Architecture, Parco Are delle Scienze 181/A, Parma 43124, Italy a Mathematical Institute of the Serbian Academy of Sciences and Arts, Kneza Mihaila 36, Belgrade 11000, Serbia b University of Parma, Department of Engineering and Architecture, Parco Area delle Scienze 181/A, Parma 43124, Italy

* Corresponding author. Tel.: +381-63-805-6085; fax: +381-11-218-6105. E-mail address: slobodanka.boljanovic@mi.sanu.ac.rs * Corresponding author. Tel.: +381-63-805-6085; fax: +381-11-218-6105. E-mail address: slobodanka.boljanovic@mi.sanu.ac.rs

2452-3216 © 2020 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 European Structural Integrity Society (ESIS) ExCo 2452-3216 © 2020 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 t European Structural Integrity So i ty (ESIS) ExCo

2452-3216 © 2020 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 European Structural Integrity Society (ESIS) ExCo 10.1016/j.prostr.2020.11.084