PSI - Issue 39

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

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 39 (2022) 582–598

© 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 CP 2021 – Guest Editors Abstract The present paper focuses on the prediction of cyclic crack propagation due to missions with varying mixed-mode loading conditions. Overall, 18 different loading conditions are simulated and the numerical results are compared with the corresponding experimental results. The deflection angle prediction in correspondence of the complete mission is based on the Maximum Tensile Stress (MTS) criterion, coupled with the dominant step approach. The entire numerical simulation procedure relies on the algorithms implemented in the commercial FRacture ANalysis Code 3D, FRANC3D, and ABAQUS software. Numerical and experimental fracture surfaces, in correspondence of tension-torsion tests with and without phase shift, are compared by using an MTU in house tool, CT3D_Validator, with the aim to assess the accuracy of the numerical simulation procedure in determining the crack propagation direction. © 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 CP 2021 – Guest Editors Keywords: crack growth; mixed-mode; non-proportional loading; specimens; tension-torsion; mission 1. Introduction The damage tolerance design philosophy has introduced new challenges for engineers. Mechanical components must withstand harsh operating conditions with slender structures. In this framework, fracture mechanics assessments have begun progressively a prerequisite for the acceptance of new components. Especially in aircraft engine 7th International Conference on Crack Paths Crack Growth Propagation Prediction in Non-Proportional Mixed Mode Missions Daniele Amato a, *, Guido Dhondt b , Roberto Citarella a a Dept. of Industrial Engineering, University of Salerno, via G. Paolo II, 132 - 84084 Fisciano, Italy b MTU Aero Engines AG, Dachauer Str. 665, 80995 Munich, Germany o Dhondt b , Roberto Citarella a G

* Corresponding author. E-mail address: daamato@unisa.it

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 CP 2021 – Guest Editors

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 CP 2021 – Guest Editors 10.1016/j.prostr.2022.03.132