PSI - Issue 48

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

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 48 (2023) 280–287

Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023) Experimental strain measurements on ring tensile specimens made of S235JRH steel pipe Milan Travica a, *, Nenad Mitrovi ć b , Aleksandar Petrovi ć b , Milo š Milo š evi ć a

a Innovation Centre of the Faculty of Mechanical Engineering, Kraljice Marije 16, 11000 Belgrade, Serbia b Faculty of Mechanical Engineering, University of Belgrade, Kraljice Marije 16, 11000 Belgrade, Serbia

Abstract

© 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 IRAS 2023 organizers In For various pipe manufacturing processes, information on the pipe circumferential strain and stress state is needed (e.g. in the oil industry, the process of manufacturing seamless pipes with a conical shaft). This study's objective is to create a method for analyzing the strain and stress behavior of a pipe ring tensile specimen (PRTS) in the hoop direction. The potential for the creation of a PRTS is indicated by the absence of official standardized testing procedures. The use of the digital image correlation approach to test plastic PRTS is discussed in the paper. A steel instrument with two D blocks that has been particularly constructed is used to test PRTS. Over two D-shaped mandrels that are fixed to a tensile tool and a tensile testing machine, a 3D- printed PRTS is inserted. Three-dimensional Digital image correlation (3D DIC) method was used to record the strain evolution in the gage length of the specimens. All of the specimens are 3D scanned to verify the geometry of the cross-section of the PRTS following fracture. Five single PRTS were examined for the study. The results demonstrate that the DIC system, 3D printer, and scanner approach are efficient tools for characterizing the mechanical properties of pipes by mapping complete strain fields in steel PRTS. © 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 IRAS 2023 organizers Keywords: steel PRTS, S235JRH material, tensile testing tool, tensile test, Digital Image Correlation Method, strain, stress.

* Corresponding author. Tel.: /; fax: /. E-mail address: mtravica@mas.bg.ac.rs

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 IRAS 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 IRAS 2023 organizers 10.1016/j.prostr.2023.07.131