PSI - Issue 54

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ScienceDirect

Procedia Structural Integrity 54 (2024) 354–360 Structural Integrity Procedia 00 (2022) 000–000 Structural Integrity Procedia 00 (2022) 000–000

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© 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 scientific committee of the ICSI 2023 organizers © 2022 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 responsibility of Pedro Miguel Guimaraes Pires Moreira. Keywords: Digital image correlation; Mode I; Fracture parameters; Wood Abstract In this study, we investigate the cracking behaviour of softwood species using the MMCG fracture test. Our primary objective is to directly measure crack length propagation in mode I loading and the associated fracture parameters. To achieve this, we employ the Arcan system to apply load to the specimen. We used Digital Image Correlation (DIC) to measure displacement and strain fields ahead of the advancing crack. Fracture properties were determined using the compliance method, providing an estimate of the critical strain energy release rate for mode I. Two di ff erent methodologies were employed and compared to determine crack length during the tests. A comparison of the average values of critical strain energy release rate among the reported values in the literature for other temperate species demonstrated a consistent pattern. This consistency o ff ers valuable insights into understanding the fracture behaviour of Silver Fir. © 2022 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 responsibility of Pedro Miguel Guimaraes Pires Moreira. Keywords: Digital image correlation; Mode I; Fracture parameters; Wood International Conference on Structural Integrity 2023 (ICSI 2023) Direct Assessment of Mode I Fracture Properties in Silver Fir Using MMCG Specimen and Digital Image Correlation O. Cochet a , J. Xavier b,c, ∗ , R.F. Martins b,c , R. Moutou Pitti a a Universite´ Clermont Auvergne, Clermont Auvergne INP, Institut Pascal, Clermont-Ferrand, France b UNIDEMI, Department of Mechanical and Industrial Engineering, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal c Laborato´rio Associado de Sistemas Inteligentes, LASI, 4800-058 Guimara˜es, Portugal Abstract In this study, we investigate the cracking behaviour of softwood species using the MMCG fracture test. Our primary objective is to directly measure crack length propagation in mode I loading and the associated fracture parameters. To achieve this, we employ the Arcan system to apply load to the specimen. We used Digital Image Correlation (DIC) to measure displacement and strain fields ahead of the advancing crack. Fracture properties were determined using the compliance method, providing an estimate of the critical strain energy release rate for mode I. Two di ff erent methodologies were employed and compared to determine crack length during the tests. A comparison of the average values of critical strain energy release rate among the reported values in the literature for other temperate species demonstrated a consistent pattern. This consistency o ff ers valuable insights into understanding the fracture behaviour of Silver Fir. International Conference on Structural Integrity 2023 (ICSI 2023) Direct Assessment of Mode I Fracture Properties in Silver Fir Using MMCG Specimen and Digital Image Correlation O. Cochet a , J. Xavier b,c, ∗ , R.F. Martins b,c , R. Moutou Pitti a a Universite´ Clermont Auvergne, Clermont Auvergne INP, Institut Pascal, Clermont-Ferrand, France b UNIDEMI, Department of Mechanical and Industrial Engineering, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal c Laborato´rio Associado de Sistemas Inteligentes, LASI, 4800-058 Guimara˜es, Portugal

1. Introduction 1. Introduction

Wood is a natural, renewable, low-energy-cost, recyclable and biologically degradable material. Wood is an in creasingly demanding engineering material due to its potential for reducing pollution and combating global warming. Its use in structural applications has been recognised as a promising solution for sustainable and e ffi cient building de sign. However, ensuring the safety and reliability of wooden structures requires a comprehensive understanding of the fracture mechanics of wood. The study of wood failure properties is, therefore, vital for further enhancing value-added structural applications. Therefore, a deep understanding of wood fracture parameters can significantly contribute to the design and development of more e ffi cient and sustainable wooden products. Wood is a natural, renewable, low-energy-cost, recyclable and biologically degradable material. Wood is an in creasingly demanding engineering material due to its potential for reducing pollution and combating global warming. Its use in structural applications has been recognised as a promising solution for sustainable and e ffi cient building de sign. However, ensuring the safety and reliability of wooden structures requires a comprehensive understanding of the fracture mechanics of wood. The study of wood failure properties is, therefore, vital for further enhancing value-added structural applications. Therefore, a deep understanding of wood fracture parameters can significantly contribute to the design and development of more e ffi cient and sustainable wooden products.

∗ Corresponding author. Tel.: + 351 212 948 567. E-mail address: jmc.xavier@fct.unl.pt ∗ Corresponding author. Tel.: + 351 212 948 567. E-mail address: jmc.xavier@fct.unl.pt

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 scientific committee of the ICSI 2023 organizers 10.1016/j.prostr.2024.01.093 2210-7843 © 2022 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 responsibility of Pedro Miguel Guimaraes Pires Moreira. 2210-7843 © 2022 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 responsibility of Pedro Miguel Guimaraes Pires Moreira.