“The Paton Welding Journal” #08_2023 will be freely distributed from 11 to 15 September during the exhibition SCHWEISSEN & SCHNEIDEN 2023, Messe Essen, Norbertstrasse 2, Essen, Germany at the stand of the Paton Welding Institute: Hall 8 Stand 8B29.1.
You can also order this issue of the Journal in electronic form for free.
Send applications to E-mail: email@example.com
Contents of the issue
Technical Diagnostics and Non-Destructive Testing 2023 №01
Technical Diagnostics and Non-Destructive Testing #1, 2023, pp. 22-27
Numerical assessment of brittle strength of field welds of the main gas pipelines at transportation of gas-hydrogen mixtures
O.S. Milenin, O.A. Velikoivanenko, G.P. Rozynka, N.I. Pivtorak
E.O. Paton Electric Welding Institute of the NAS of Ukraine.
11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: firstname.lastname@example.org
Features of the influence of hydrogen degradation of pipe steel on brittle strength of circumferential field welded joints were
considered within the framework of analysis of the possibility of using the Ukrainian gas-transportation system for transportation
of mixtures of natural gas and hydrogen. Applied for these purposes were the methods of finite-element modeling of the structure
stress-strain state during welding and further service together with modern criteria of macroscopic fracture of a cracked body.
Results of prediction of brittle strength margin of a typical welded section of the main gas pipeline with postulated surface cracks
at transportation of gas-hydrogen mixtures of different composition showed that the areas of the weld and heat-affected zone
are the most prone to brittle fracture. However, as regards fatigue strength of welded joints, greater ranges of stress intensity
factors in the heat-affected zone under the impact of cyclic loading by inner pressure or bending moment, result in an essential
reduction of the residual strength margins at prediction of long-term brittle strength. 15 Ref., 1 Tabl., 7 Fig.
Keywords: gas-hydrogen mixture, main gas pipeline, hydrogen degradation, technical condition, brittle strength, cyclic loading
1. Nechaev, Yu.S. (2008) Physical complex problems of aging, embrittlement and fracture of metallic materials in hydrogen power engineering and main pipelines. Uspekhi Fizicheskikh Nauk, Vol. 178(7), 709-726 [in Russian]. 2. Esaklul, K.A. (2017) Hydrogen damage.
2. Esaklul, K.A. (2017) Hydrogen damage. Trends in Oil and Gas Corrosion Research and Technologies Production and Transmission. UK: Woodhead Publishing, 315-340.
https://doi.org/10.1016/B978-0-08-101105-8.00013-9 3. Dmytrakh, I., Syrotyuk, A., Leshchak, R. (2022) Specific mechanism of hydrogen influence on deformability and fracture of low-alloyed pipeline steel. Procedia Structural Integrity, 36, 298-305.
https://doi.org/10.1016/j.prostr.2022.01.038 4. Nykyforchyn, H., Lunarska, E., Tsyrulnyk, O.T. et al. (2010) Environmentally assisted «in-bulk» steel degradation of long term service gas trunkline. Engineering Failure Analysis, 17, 3, 624-632.
https://doi.org/10.1016/j.engfailanal.2009.04.007 5. Milenin, O.S., Velykoivanenko, O.A., Rozynka, G.P., Pivtorak, N.I. (2022) Features of analysis of the technical state and support of reliability of the main gas pipelines at transportation of gas-hydrogen mixtures (Review). The Paton Welding J., 6, 49-56.
https://doi.org/10.37434/tpwj2022.06.07 6. Karkhin, V.A. (2019) Thermal Processes in Welding. Singapore, Springer Singapore.
https://doi.org/10.1007/978-981-13-5965-1 7. Makhnenko, V. (2013) Problems of examination of modern critical welded structures. The Paton Welding J., 5, 21-28.
8. Milenin, A., Velikoivanenko, E., Rozynka, G., Pivtorak, N. (2019) Probabilistic procedure for numerical assessment of corroded pipeline strength and operability. International Journal of Pressure Vessels and Piping, 171C, 60-68.
https://doi.org/10.1016/j.ijpvp.2019.02.003 9. (2015) BS 7910:2013+A1:2015 Guide to methods for assessing the acceptability of flaws in metallic structures. The British Standards Institution.
10. (2007) Fitness-For-Service. API 579-1/ASME FFS-1. Recommended Practice 579. Second edition. Washington, API Publishing Services.
11. (1997) SNiP 2.05.06-85. Main pipelines. Building norms and rules. Moscow, VNIIST Minneftegazstroj [in Russian].
12. Hobbacher, A. (2008) Recommendations for Fatigue Design of Welded Joints and Components. International Institute of Welding. Doc. XIII-2151r4-07/XV-1254r4-07. Paris, France, October 2008.
13. Furrer, D.U., Semiatin, S.L. (2009) ASM Handbook. Volume 22A. Fundamentals of Modeling for Metals Processing. Edit. Ohio, ASM International.
https://doi.org/10.31399/asm.hb.v22a.9781627081962 14. Meng, B., Gu, C.H., Zhang, L. et al. (2017) Hydrogen effects on X80 pipeline steel in high-pressure natural gas/ hydrogen mixtures. International Journal of Hydrogen Energy, 42, 11, 7404-7412.
https://doi.org/10.1016/j.ijhydene.2016.05.145 15. Stalheim, D., Boggess, T., SanMarchi, C. et al. (2010) Microstructure and mechanical property performance of commercial grade API pipeline steels in high pressure gaseous hydrogen. In: Proceedings of IPC 2010 8th International Pipeline Conference Calgary, Canada.
O.S. Milenin, O.A. Velikoivanenko, G.P. Rozynka, N.I. Pivtorak Numerical assessment of brittle strength of field welds of the main gas pipelines at transportation of gas-hydrogen mixtures Technical Diagnostics and Non-Destructive Testing №01 2023 p.22-27
The cost of article: 140 UAH,7 $,7 €. (one article)