Large-scale CFRTP-Al alloy stacks laser assisted joining with a reciprocating feed method

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-10-04 DOI:10.1016/j.optlastec.2025.114022

Fuji Wang , Ziming Wang , Qi Wang , Chaoyang Luo , Jiankang Li , Gongshuo Wang , Shiheng Zhang , Rao Fu

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引用次数: 0

Abstract

No-bolt joining Aluminum alloys and carbon fiber reinforced thermoplastic (CFRTP) are popular topic in aerospace and automation field, in which laser fusion joining is characterized by high-quality and high-efficiency. However, high-energy laser input and material property differences often cause interface temperature difficult to control, leading to thermal defects, which become more challenging as stacks size increases. This study investigates the temperature distribution and thermal defect formation at the Al/CFRTP lap interface under laser heating, based on one-dimensional heat transfer in dissimilar materials. A laser reciprocating feed method for regulating lap interface temperature is proposed. A quantitative evaluation standard for fusion joining quality was established based on lap interface temperature characteristics. Using this standard, an empirical model was developed to optimize process parameters, providing an optimized parameter set and a fusion joining strength prediction model. Experimental results show that the optimized process parameters improve lap interface temperature uniformity by an average of 47 %, while the joint strength in high-strength zones exceeds 20 MPa, offering effective guidance for laser fusion joining of similar Al/CFRTP stack structures.

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大型cfrtp -铝合金叠层激光辅助连接往复进给法

铝合金和碳纤维增强热塑性塑料（CFRTP）是航空航天和自动化领域的热门课题，其中激光熔接具有高质量和高效率的特点。然而，高能激光输入和材料性能的差异往往导致界面温度难以控制，从而导致热缺陷，随着堆叠尺寸的增加，热缺陷的控制变得更加具有挑战性。基于不同材料的一维传热，研究了激光加热下Al/CFRTP搭接界面的温度分布和热缺陷的形成。提出了一种调节搭接界面温度的激光往复进给方法。建立了基于搭接界面温度特征的焊接质量定量评价标准。根据该标准，建立了工艺参数优化的经验模型，给出了优化后的参数集和熔接强度预测模型。实验结果表明，优化后的工艺参数使搭接界面温度均匀性平均提高47%，高强度区接头强度超过20 MPa，为类似Al/CFRTP叠层结构的激光熔接提供了有效的指导。

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems