PSI - Issue 54

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ^ĐŝĞŶĐĞ ŝƌĞĐƚ Structural Integrity Procedia 00 (2023) 000 – 000

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Procedia Structural Integrity 54 (2024) 514–520

© 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 possible solutions to overcome these problems. © 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 Keywords: digital image correlation; welded joint; material properties 1. Introduction In recent years, several methods to investigate tensile properties of a welded joint in any location in the cross section by using DIC (described by Sutton, 2009) were proposed. Virtual Field Method (VFM) by Grédiac (2002) (Pierron 2012, Pierron 2020) seems to be a perfect solution for this purpose. One of the first attempts to measure International Conference on Structural Integrity 2023 (ICSI 2023) Investigation of full field of material properties of X52 welded joint K oščo T. a *, Chmelko V. a a Slovak University of Technology in Bratislava, Faculty of Mechanical Engineering, Námestie slobody 17, 812 31, Bratislava, Slovakia Abstract Use of full-field non-contact experimental methods such as digital image correlation (DIC) to obtain material properties has gained importance in recent years. Techniques such as Virtual Field Method (VFM) or Finite Element Model Updating (FEMU) are playing an increasingly important role. The presented contribution deals with the investigation of full-field material properties of X52 pipeline steel welded joint. Investigated pipeline weld was divided into five dogbone tensile specimens in different locations of the weld cross section. By using the Uniform Stress Method, true stress-strain maps were evaluated for every specimen. Tensile properties were evaluated or can be estimated in every location of the weld crossection. All the important mechanical characteristics such as Young modulus, Yield stress, Ultimate stress or the shape of tensile diagram have been obtained in almost all locations. Due to the noise in the DIC data, Poissons ratio was evaluated in fewer locations. The presented paper also highlights the most common problems in evaluation of Poissons ratio by using DIC method and also presents

* Corresponding author. Tel.: +421 910 670 667 E-mail address: tomas.kosco@stuba.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 responsibility of the scientific committee of the ICSI 2023 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 responsibility of the scientific committee of the ICSI 2023 organizers 10.1016/j.prostr.2024.01.114