PSI - Issue 28

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 28 (2020) 218–225

© 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 This contribution addresses a novel analytical procedure to evaluate the Stress Intensity Factors (SIF) of slant notches existing in flat plates employing the concept of the stress dead-zone. The compliance function formulation is extended to the Linear Elastic Fracture Mechanics (LEFM) to assess the fracture characterization. Therefore, the hypothesis is established for centrally oriented cracked specimens with various slant angles. To fulfil the study objectives, a hybrid experimental/computational study resorting to Digital Image Correlation (DIC) and Finite Element Method (FEM) is undertaken, aiming at the monitoring of the component deformation around the cracked region and subsequent SIF determination. A comparison is drawn on the SIF results extracted via the dead-zone concept, experimental and numerical studies to the reference solution, available in the literature. Besides, as a further investigation, the stress dead-zone region, which was analytically characterized, is also numerically verified through FEM. Encouraging results have been obtained which validate the dead-zone hypothesis for slant-cracked plates. © 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: SIF; Stress dead-zone; FEM; DIC; LEFM. 1. Introduction Linear Elastic Fracture Mechanics (LEFM) relies on the analysis of the defects in the framework of the linear elastic material behavior. It is key to solve most practical models in various engineering fields resorting to structural integrity assessment, safety and life expectancy prediction of cracked structures. The LEFM considers that material is isotropic 1st Virtual European Conference on Fracture A Novel Analytical Solution on the Mode I SIF for Finite Plates with Slanted Cracks Behzad V. Farahani*, Francisco Q. de Melo, Paulo J. Tavares, Pedro M. G. P. Moreira INEGI - Institute of Science and Innovation in Mechanical and Industrial Engineering, Campus da FEUP, R. Dr. Roberto Frias 400, 4200-465 Porto, Portugal

* Corresponding author. Tel.: +351 938096044. E-mail address: behzad.farahani@fe.up.pt

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 the European Structural Integrity Society (ESIS) ExCo 10.1016/j.prostr.2020.10.027