Proceedings of the 7th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2024)

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Omega: A material parameter for quantifying fracture in sheet materials

Authors
Jingsi Jiao1, Jian Fang2, *, Jianwei Zhang2, Matthias Weiss3, Bernard Rolfe1
1School of Engineering, Deakin University, Geelong, VIC, 3220, Australia
2Baosteel Central Research Institute (Technology Center), Shanghai, China
3Institute for Frontier Materials, Deakin University, Geelong, VIC, 3220, Australia
*Corresponding author. Email: fangjian@baosteel.com
Corresponding Author
Jian Fang
Available Online 7 December 2024.
DOI
10.2991/978-94-6463-581-2_32How to use a DOI?
Keywords
Omega; Fracture Modes; Stress Triaxiality; Sheet Materials
Abstract

The Omega parameter offers a novel approach to quantifying line pipe steels’ fracture resistance through a post-processing 3D scanning and slicing technique. Unlike traditional parameters such as the Crack Tip Opening Angle (CTOA), Omega reduces testing costs and subjectivity and remains unaffected by the geometrical configuration of the test setup. It provides a comprehensive evaluation of the fracture process, including tensile-dominant initiation, steady-state shear propagation, and the transition between these modes. This study explores Omega’s application to widely used sheet materials (DP600, DP1000, and Al7075) using Single Edge Notched Tensile (SENT) tests. Findings demonstrate Omega’s capability to accurately capture fracture behaviour across various stress triaxiality states and fracture modes. This highlights Omega’s potential to become a standardized test for analysing fracture failure in the sheet metal forming industry, where a wide range of stress states during forming is often observed.

Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 7th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2024)
Series
Atlantis Highlights in Material Sciences and Technology
Publication Date
7 December 2024
ISBN
978-94-6463-581-2
ISSN
2590-3217
DOI
10.2991/978-94-6463-581-2_32How to use a DOI?
Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Jingsi Jiao
AU  - Jian Fang
AU  - Jianwei Zhang
AU  - Matthias Weiss
AU  - Bernard Rolfe
PY  - 2024
DA  - 2024/12/07
TI  - Omega: A material parameter for quantifying fracture in sheet materials
BT  - Proceedings of the 7th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2024)
PB  - Atlantis Press
SP  - 261
EP  - 266
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-581-2_32
DO  - 10.2991/978-94-6463-581-2_32
ID  - Jiao2024
ER  -