Blue laser welding of 7075-T6 aluminum alloy and carbon fiber reinforced polyetheretherketone

Yuan, Guixin; Zhou, Zhukun; Li, Xiang; Yu, Lihua

doi:10.1016/j.optlastec.2022.108440

Cited by 7 publications

(6 citation statements)

References 29 publications

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“…The natural boundary condition applied to the workpiece was expressed by Equation ( 1) 17 : Where T 0 was the ambient temperature; σ was the Stefan-Boltzmann constant (5.67 W/cm 2 •K 4 ); ε was the emissivity of the metal surface (0.2); and k stood for the thermal conductivity. 18 Heat source model and material properties. In this study, considering the deep penetration characteristics of laser welding, a combined Gaussian surface and volume heat source model was utilized 19 and the trajectory of heat source (Equation ( 5)), plotted as follows:…”

Section: Numerical Analysismentioning

confidence: 99%

Effect of beam oscillation frequency on porosity in laser welding of aluminum alloy lap-butt joints

Tan,

Zhang,

Liu

et al. 2024

Science and Technology of Welding and Joining

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Many investigations into laser oscillations for mitigating severe porosity in aluminum alloys have involved trading off penetration depth, potentially disrupting the porosity suppression mechanism. In this study, an oscillation laser butt-lap welding technique was designed, and the effect of oscillation frequency on cross-section morphologies and porosity rate was investigated while maintaining the constant weld depth. The findings unveiled that heightened oscillation frequencies led to diminished porosity levels, and this pattern remained consistent, even in cases where weld depths were extended. High-frequency laser beam oscillation enhanced the stability of the keyhole, increased the duration of the molten pool existence, and reduced porosity to 0.17%. Thus, this study offered significant insights into the impact of oscillation on laser welding of aluminum alloys.

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Section: Numerical Analysismentioning

confidence: 99%

Effect of beam oscillation frequency on porosity in laser welding of aluminum alloy lap-butt joints

Tan,

Zhang,

Liu

et al. 2024

Science and Technology of Welding and Joining

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show abstract

“…(A) Blue laser welding CFRTP/Al stress simulation. 70 (B) Residual stress simulation of laser oscillating welding CFRTP/Ti-6Al-4V. 75 F I G U R E 1 3 Application of temperature field simulation for laser-welded metals/CFRTP.…”

Section: Simulation Of Temperature Fieldsmentioning

confidence: 99%

“…Blue laser welding (BLW) is a new method to improve the laser absorption of metals significantly and obtain stronger joints for highly reflective alloys. A comparison between BLW and laser oscillating welding (FLOW) of Al/(CFRP‐PEEK) revealed that the largest tensile of 478 N for the BLW joint was larger than the FLOW's 290 N, and the greatest residual stress of the BLW joint was smaller than the FLOW joint 70 . BLW obtained fewer and smaller bubbles and smaller stress concentrations, obtaining a greater amount of CFRTP connected to Al alloy, increasing the joint strength.…”

Section: Enhancement For Laser‐welded Joints Between Cfrpt and Metalmentioning

confidence: 99%

“…Yuan et al 70 performed FE simulations of blue laser welding (BLW)CFRTP/Al and obtained stress results. As shown in Figure 12A, the simulation results of residual stresses in BLW deviated significantly from the experimental results, but the maximum residual stresses were located in the center of the weld in both experiments and simulations.…”

Section: Numerical Simulation Of Laser Joining Of Cfrtp and Metalmentioning

confidence: 99%

“…Stress simulation of laser welding CFRTP/metals. (A) Blue laser welding CFRTP/Al stress simulation 70 . (B) Residual stress simulation of laser oscillating welding CFRTP/Ti‐6Al‐4V 75 …”

Section: Numerical Simulation Of Laser Joining Of Cfrtp and Metalmentioning

confidence: 99%

See 2 more Smart Citations

Laser joining of CFRTP to metal: A review on welding parameters, joint enhancement, and numerical simulation

Hu,

2023

Polymer Composites

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As a lightweight material with high performance, carbon fiber‐reinforced thermoplastic plastic (CFRTP) is being implemented increasingly in aerospace, automotive, new energy, and so forth. The connection between CFRTP and metals, which are still used in these areas, is an inevitable problem. Among the various connection techniques, laser welding of CFRTP to metal is attractive due to high efficiency, excellent strength, and no contact. This paper presents the most recent research on laser welding CFRTP and metals in three aspects: (a) the principle of laser welding CFRTP to metals and the influence of process parameters on joint quality including laser power, defocus distances, scanning speed, clamping pressure, and beam shape, (b) the joint enhancement mechanisms and methods, and (c) numerical simulations of temperature and stress fields of laser‐connected CFRTP to metals. The findings show that joint strength is significantly influenced by process parameters and that the maximum joint strength can be achieved by choosing the right parameters. Apart from the conventional techniques of texturing the metal surface, applying a suitable layer of resin, and applying chemical treatment, other novel joint improvement measures have also been used, including the use of blue laser and CFRTP embedded in the metal. The temperature field and residual stresses can be successfully simulated by finite elements, which can be useful when studying new processes and choosing parameters for metal laser welding and CFRTP.Highlights We review the progress from parameters, simulations, and enhancements. The main parameters have essential effects on the dimensions and strength of joints. FEM (Finite Element Method) is applied to simulate the temperature and stress of the laser welding. Joints can be reinforced by surface pre‐texturing, adding resin, and grafting.

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Comprehensive influence of silane layer and interfacial thermo-mechanical effect on joining mechanism of silane pretreated Al/CFRP FSLW joint: FEA and experiment

Liu,

Zhou,

Zhang

et al. 2023

Journal of Manufacturing Processes

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Blue laser welding of 7075-T6 aluminum alloy and carbon fiber reinforced polyetheretherketone

Cited by 7 publications

References 29 publications

Effect of beam oscillation frequency on porosity in laser welding of aluminum alloy lap-butt joints

Effect of beam oscillation frequency on porosity in laser welding of aluminum alloy lap-butt joints

Laser joining of CFRTP to metal: A review on welding parameters, joint enhancement, and numerical simulation

Comprehensive influence of silane layer and interfacial thermo-mechanical effect on joining mechanism of silane pretreated Al/CFRP FSLW joint: FEA and experiment

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