Influence of Adapted Wavelengths on Temperature Fields and Melt Pool Geometry in Laser Transmission Welding

Schkutow, Andreas; Frick, Thomas

doi:10.1016/j.phpro.2016.08.111

Cited by 14 publications

(3 citation statements)

References 9 publications

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“…The optical properties of the polymer (transmission, reflectance, and absorbance) are The temperature field was simulated for simultaneous and contoured welds and gaps, considering absorption and scattering properties, based on the volume heat source model at different wavelengths [58] (Figures 11 and 12). The simulation results showed that the polymer had better absorption properties in the wavelength range of 1400-2000 nm compared to 980 nm.…”

Section: Numerical Simulation Of Temperature Field For Laser Strategy...mentioning

confidence: 99%

Numerical Simulation of Laser Transmission Welding—A Review on Temperature Field, Stress Field, Melt Flow Field, and Thermal Degradation

Zuo

2023

Polymers

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Laser transmission welding (LTW) is an excellent process for joining plastics and is widely used in industry. Numerical simulation is an important method and area for studying LTW. It can effectively shorten the experimental time and reduce research costs, aid in understanding the welding mechanism, and enable the acquisition of ideal process parameters. To enhance understanding of numerical simulation studies on LTW and facilitate research in this area, this paper presents a comprehensive overview of the progress made in numerical simulation of LTW, covering the following aspects: (a) characteristics of the three heat source models for LTW temperature field simulation, including surface heat source model, volumetric heat source model, and hybrid heat source model, along with the methods, results, and applications of temperature field simulation based on these models and experimental validation; (b) numerical simulation of thermal and residual stresses based on the temperature field; (c) numerical simulation of the melt flow field; and (d) predictive simulation of material degradation. The conclusion of the review and the prospects for further research work are eventually addressed.

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Section: Numerical Simulation Of Temperature Field For Laser Strategy...mentioning

confidence: 99%

Numerical Simulation of Laser Transmission Welding—A Review on Temperature Field, Stress Field, Melt Flow Field, and Thermal Degradation

Zuo

2023

Polymers

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“…Material characterization (prior to welding) Absorption or transmission of laser radiation [10,35,40,47,49,41,44,45,85,63,56,7,6,61,69,80,83,90,97,106,87,77,84] Joints characterization Optical microscopy [29,33,36,11,12,39,13,43,42,45,85,63,88,89,52,53,54,55,56,57,7,66,81,82,101,58,91,97,104,…”

Section: Technique Referencesmentioning

confidence: 99%

Laser welding of thermoplastics: An overview on lasers, materials, processes and quality

Gonçalves

Duarte

Martins

et al. 2021

Infrared Physics & Technology

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“…A thermal process simulation of the quasi-simultaneous welding process when applying a 1.0 µm (left) and a 2.0 µm laser (center) shows the modified melt pool cross-section: molten material (temperature above melting temperature) is shown in grey. Additionally, it has been shown that the absorption coefficient of carbon black filled polymers is also wavelength dependent, leading to a greater penetration depth of the radiation of the Tm-fiber laser [4]. This further increases the heat spreading and lowers the peak temperatures.…”

Section: Absorption Behavior and Melt Pool Geometriesmentioning

confidence: 99%

2.0 μm Laser Transmission Welding

Fuhrberg¹,

Ahrens²,

Schkutow³

et al. 2020

PhotonicsViews

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2.0 μm fiber lasers provide a high beam quality and a high‐power output, which makes them ideal for welding and cutting a wide variety of commercially used plastics, as well as marking plastics, metals or even food. At 2.0 μm wavelength the intrinsic absorption of most thermoplastics is high enough to weld or cut without applying any absorbent additives or coatings. Compared to commonly used near‐infrared systems, welding with 2.0 μm lasers can improve heat distribution and gap bridging and enable transmission welding for challenging materials.

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Influence of Adapted Wavelengths on Temperature Fields and Melt Pool Geometry in Laser Transmission Welding

Cited by 14 publications

References 9 publications

Numerical Simulation of Laser Transmission Welding—A Review on Temperature Field, Stress Field, Melt Flow Field, and Thermal Degradation

Numerical Simulation of Laser Transmission Welding—A Review on Temperature Field, Stress Field, Melt Flow Field, and Thermal Degradation

Laser welding of thermoplastics: An overview on lasers, materials, processes and quality

2.0 μm Laser Transmission Welding

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