Bending Fatigue Characteristics of Butt Joints by Laser-Arc Hybrid Welding for Steel Bridge Members

Chen, Gang; Sakai, Natsumi; Hirohata, Mikihito; Hyoma, Kengo; Matsumoto, Naoyuki; Inose, Koutarou

doi:10.1007/978-3-031-15211-5_75

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“…The authors have noted the combination of hybrid welding and SBHS by anticipating a synergy between highquality welding processes and high-performance materials. In previous studies 5,6) , a series of experiments were conducted to examine the basic characteristics of the hybridwelded joints of SBHS and to measure the welding deformation and residual stress of the joints. Numerical simulations were performed to obtain a detailed distribution of the residual stress of the hybrid welded joints.…”

Section: Introductionmentioning

confidence: 99%

Experimental comparison on load-carrying capacity of corner joints by laser-arc hybrid welding and arc welding

Chen,

Hirohata,

Hyoma

et al. 2023

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

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For extending the application of hybrid welding to the fabrication of steel bridge structures, a series of experiments were performed. One-pass full-penetration corner joints of SBHS500 with 12 mm thickness were fabricated by laser-arc hybrid welding. Four passes were required to produce the same-dimensional full-penetration corner joints by conventional arc welding. Monotonic compressive loading experiments were performed to investigate the load-carrying performances of hybrid-welded and arc-welded corner joints. Compared to arc-welded specimens, the elastic stiffness of hybrid-welded specimens was greater by 24%, and the maximum compressive load of hybrid-welded specimens was greater by 5%, demonstrating that the load-carrying performances of hybrid-welded corner joints may outperform arc-welded corner joints.

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Section: Introductionmentioning

confidence: 99%