Local heating for reducing residual stress and fatigue-performance improvement of welded joints

Hirohata, Mikihito; Chang, Kyong Ho; Suzuki, Toshimitsu et al.

Journal of Constructional Steel Research, 2024, 215, 108544

Number of Access:315（2025-07-27 01:44 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/95863

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Title
Local heating for reducing residual stress and fatigue-performance improvement of welded joints
Creator
NRID
1000050565140 1000050565140
ORCID
0000-0003-4013-7960 0000-0003-4013-7960
researchmap permalink
m_hirohata m_hirohata
Scopus Author ID
7006219862 7006219862
CreatorName
Hirohata, Mikihito
CreatorName
Chang, Kyong Ho
CreatorName
Suzuki, Toshimitsu
CreatorName
Konishi, Hideaki
Subject
Box-welded joints
Fatigue
Finite element analysis
Residual stress
Welding
Description
Hirohata M., Chang K.H., Suzuki T., et al. Local heating for reducing residual stress and fatigue-performance improvement of welded joints. Journal of Constructional Steel Research 215, 108544 (2024); https://doi.org/10.1016/j.jcsr.2024.108544.
Abstract
This study conducts a series of experiments and numerical simulations to explore the effectiveness of local induction heating in reducing welding residual stress and enhancing the fatigue life of steel structural members. The primary focus was on diminishing tensile residual stress around box-welded joints using an induction heating device. The investigation encompassed various heating conditions, including temperature, position, and sequence, to examine the reduction of welding residual stress. Experimental and analytical approaches were utilized to assess these conditions. Residual stress measurements confirmed the efficacy of stress reduction through local heating, while numerical simulations elucidated the underlying stress reduction mechanism. Additionally, the study evaluated the impact of this residual stress reduction on the fatigue performance of the box-welded joints. It was found that fatigue life could be significantly improved by local heating under two distinct loading conditions in which tensile and compressive stresses were applied to the weld toe.
Publisher
Elsevier Ltd
Source Title
Journal of Constructional Steel Research
Volume (Issue)
215
Page
108544
Date of Issued
2024-04-01
Language
English
Handle URL
https://hdl.handle.net/11094/95863
PISSN
0143974X
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1016/j.jcsr.2024.108544
Access Rights
embargoed access
CopyRight
© 2024. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
The full-text file will be made open to the public on 1 April 2026 in accordance with the publisher's policy.
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article