Lebastard, Maxime and Kollár, Dénes and Horváth, András and Bureau, Alain and Couchaux, Maël and Kövesdi, Balázs Géza (2026) Influence of flange fabrication process on residual stresses of welded I-section members. THIN-WALLED STRUCTURES, 224. No. 114424. ISSN 0263-8231
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Abstract
The present paper investigates the influence of flange fabrication processes, such as plasma-cutting, flame-cutting and hot-rolling on the residual stress distribution in welded I-section members. Therefore, an extensive residual stress measurements programme is conducted on 22 welded I-section members varying flange fabrication methods and cross-sectional dimensions to overcome the lack of available experimental results. In addition, residual stress measurements are carried out on flame-and plasma-cut constituent plates, before welding. The studied welded specimens were composed of S355 structural steel, except for the flanges of two specimens, constituted by S235 steel. The experimental results highlight the substantial effect of the flange fabrication process on the residual stress distribution in welded I-section members. At the flange ends, flame-cutting yields high-magnitude tensile stresses and plasma-cutting generally yields low-magnitude tensile stresses while hot-rolled flanges exhibit high magnitude compressive stresses. The experimental results are further employed to develop novel residual stress models for thermal-cut constituent plates and welded I-sections, incorporating (i) the manufacturing specialties of thermal-cutting and welding and (ii) the thermophysical properties of the base material.
| Item Type: | Article |
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| Additional Information: | The experimental residual stress measurements reported in the present paper have been fully funded by CTICM. Besides, the present paper has been supported by the Grant MTA-BME Lendület LP2021-06/2021 “Theory of new generation steel bridges” program of the Hungarian Academy of Sciences (B. Kövesdi). The research reported in this paper and carried out at the Budapest University of Technology and Economics has been supported by the ÚNKP-23–3-I-BME-194 New National Excellence Program of the Ministry of Culture and Innovation from source of the National Research, Development and Innovation Fund (A. Horváth). The research was also supported by the Doctoral Excellence Scholarship Program of the National Research, Development and Innovation Fund, which is provided by the Ministry of Culture and Innovation and by the University Research Scholarship Programme of the National Research, Development and Innovation Fund provided by the Ministry of Culture and Innovation (A. Horváth). Financial support is gratefully acknowledged. |
| Uncontrolled Keywords: | Residual stresses; Engineering, Mechanical; Engineering, Civil; Plasma-cut flanges; Flame-cut flanges; Hot-rolled flanges; |
| Subjects: | T Technology / alkalmazott, műszaki tudományok > T2 Technology (General) / műszaki tudományok általában |
| SWORD Depositor: | MTMT SWORD |
| Depositing User: | MTMT SWORD |
| Date Deposited: | 21 Sep 2026 08:44 |
| Last Modified: | 21 Sep 2026 08:44 |
| URI: | https://real.mtak.hu/id/eprint/246897 |
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