Investigating laser intensity profile and light scattering effects in the transmission laser welding process of 3D printed parts

IF 3.8 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Advanced Joining Processes Pub Date : 2024-01-07 DOI:10.1016/j.jajp.2024.100186
Thi-Ha-Xuyen Nguyen, André Chateau Akué Asséko, Anh-Duc Le, Benoît Cosson
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Abstract

Transmission Laser Welding (TLW) is a promising technique for joining thermoplastic and composite components, especially those produced through additive manufacturing or 3D printing processes. However, achieving optimal welding quality and efficiency in TLW of 3D printed parts is challenging due to the presence of highly heterogeneous and anisotropic materials, which introduce light scattering and absorption issues. Light scattering is caused by the refraction phenomenon. These phenomena significantly impact the laser intensity profile within the materials and at the welding interface, thereby affecting the energy required for successful welding and the mechanical strength of the final assembly. In this paper, we present an in-depth investigation into the laser intensity profile and the effects of laser-matter interaction on the welding of 3D-printed parts. Our approach combines experimental measurements using a heat flux sensor and an analytical inverse model to measure the laser intensity distribution within the materials at the welding interface. The results obtained from the experimental measurements and numerical identification are compared and analyzed, providing insights into the laser intensity profile in TLW of 3D printed parts.

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研究三维打印部件透射激光焊接过程中的激光强度曲线和光散射效应
透射激光焊接(TLW)是一种很有前途的热塑性塑料和复合材料部件连接技术,尤其是那些通过增材制造或三维打印工艺生产的部件。然而,在三维打印部件的透射激光焊接中实现最佳焊接质量和效率具有挑战性,这是因为存在高度异质和各向异性的材料,会带来光散射和吸收问题。光散射是由折射现象引起的。这些现象会严重影响材料内部和焊接界面的激光强度曲线,从而影响成功焊接所需的能量和最终装配的机械强度。在本文中,我们深入研究了激光强度曲线以及激光与物质相互作用对 3D 打印部件焊接的影响。我们的方法结合了使用热通量传感器的实验测量和分析逆模型,以测量焊接界面材料内部的激光强度分布。通过对实验测量结果和数值识别结果进行比较和分析,我们可以深入了解三维打印部件 TLW 焊接过程中的激光强度分布。
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来源期刊
CiteScore
7.10
自引率
9.80%
发文量
58
审稿时长
44 days
期刊最新文献
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