Water jet guided nanosecond laser cutting of CFRP
Water jet guided nanosecond laser cutting of CFRP
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DOI：
10.1016/j.optlastec.2023.110460
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发表时间：
2024
期刊：
影响因子：
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通讯作者：
H. Elkington;Jérémie Diboine;Kuda Chingwena;Ben Mason;S. Marimuthu
中科院分区：
文献类型：
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作者：
H. Elkington;Jérémie Diboine;Kuda Chingwena;Ben Mason;S. Marimuthu
在过去的十年中，由于碳纤维增强聚合物（CFRP）的轻质和高强度特性，人们对在整个工程领域开发碳纤维增强聚合物（CFRP）的兴趣越来越大。激光切割是切割金属和合金的最先进（SOTA）方法。然而，由于树脂基体和碳纤维增强材料的热性能和物理性能的差异，SOTA激光切割工艺不能用于CFRP。水射流引导激光（WJGL）加工正在成为传统激光技术无法加工的挑战性材料的首选技术。采用平均功率为400 W的高功率纳秒激光器，研究了WJGL切割CFRP的基本特性。进行了实验测试，以提高材料去除机制，加工效率，以及不同的工艺参数对工艺产量和质量的影响的理解。研究表明，WJGL切割CFRP的材料去除机制是基于热（熔化，蒸发，和熔体喷射）和纤维断裂由于水射流和热应力的作用的组合。
Over the last decade, there has been an increased interest in exploiting carbon fibre reinforced polymer (CFRP) across the engineering sector due to its lightweight and high-strength characteristics. Laser cutting is the state-of-the-art (SOTA) method for cutting metals and alloys. However, the SOTA laser cutting process cannot be used for CFRP due to differences in the thermal and physical properties of the resin matrix and carbon fibre reinforcement. Water jet guided laser (WJGL) processing is becoming the technology of choice for challenging materials that cannot be processed with conventional laser technology. This paper uses a high-power nanosecond laser with an average power of 400 W to investigate the basic characteristics of WJGL cutting of CFRP. Experimental trials were performed to improve the understanding of the material removal mechanism, machining efficiency, and the effect of different process parameters on the process throughput and quality. The study shows that the material removal mechanism of WJGL cutting of CFRP is a combination of thermal-based (melting, vaporisation, and melt-ejection) and fibre fracture due to the action of the water jet and thermal stress.