Monitoring of distance between laser beam and arc in laser-arc hybrid welding based on deep learning

Cai, Yuhua; Li, Chaonan; Chen, Hui; Xiong, Jun

doi:10.1016/j.optlastec.2024.110562

Cited by 5 publications

(1 citation statement)

References 22 publications

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“…A laser-arc hybrid could also be adopted for the welding of 304L stainless steel. This welding technology demonstrated good penetration and a higher welding speed than that of single-arc technology [9,10]. Nevertheless, the assembling process of that experimental system was relatively complex, and many further trial experiments should be conducted Materials 2024, 17,1934 2 of 12 to obtain the optimized couplings [11].…”

Section: Introductionmentioning

confidence: 99%

Effect of Welding Gap of Thin Plate Butt Welds on Inherent Strain and Welding Deformation of a Large Complex Box Structure

Zhang,

Peng,

Yang

et al. 2024

Materials

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In this study, an effective numerical model was developed for the calculation of the deformation of laser-welded 3 mm 304L stainless steel plates with different gaps (0.2 mm, 0.5 mm, and 1.0 mm). The welding deformation would become larger when the welding gaps increased, and the largest deformation values along the Z direction, of 4 mm, were produced when the gap value was 1.0 mm. A larger plastic strain region was generated in the location near the weld seam, since higher plastic deformation had occurred. In addition, the tensile stress model was also applied at the plastic strain zone and demonstrated that a larger welding gap led to a wider residual stress area. Based on the above results, inherent deformations for butt and corner joints were calculated according to inherent strain theory, and the welding formation for the complex structure was calculated with different gaps. The numerical results demonstrated that a larger deformation was also produced with a larger welding gap and that it could reach the highest value of 10.1 mm. This proves that a smaller welding gap should be adopted during the laser welding of complex structures to avoid excessive welding deformation.

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