超短脉冲激光精细加工纤维增强树脂基复合材料的研究进展

Research progress of ultrashort pulse laser precision machining fiber reinforced resin matrix composite materials

  • 摘要: 纤维增强树脂基复合材料具有轻质量、高强度、耐腐蚀和抗疲劳等优点,被广泛地应用在航空航天、风电及汽车等领域。然而纤维树脂复合材料是各向异性的非均质材料,属于典型的难加工材料,现有的加工技术存在热影响区过大、分层、起毛等问题,成为航空航天工业领域的精密加工技术瓶颈。超短脉冲激光加工作为一种新型加工技术,具有无热传递、不受物质种类限制、微小尺度、可控性强、非接触等优点,有望实现纤维复合材料的精细加工。本文在介绍目前激光加工纤维复合材料研究工作的基础上,讨论了超短脉冲激光加工以碳纤维增强树脂基复合材料为主的纤维复合材料的作用机制和提高加工质量的几种方法,指出了以突破航天工业高精度加工技术瓶颈为目的的超短脉冲激光精细加工纤维增强树脂基复合材料的研究方向、内容和科学问题,为后续实现符合航天工业高精度及大尺度要求的精密加工提供了技术路线和可能的解决方案。

     

    Abstract: Fiber reinforced resin matrix composites are widely used in aerospace, wind power and automobile industry due to the advantages of light weight, high strength, corrosion resistance, fatigue resistance etc. However, as heterogeneous anisotropic materials, fiber-reinforced composites are difficult to process. Traditional processing methods can lead to problems like excessive heat affected zone, delamination and fuzzing, which are difficult to meet the requirements of high-precision processing in the aeronautic and astronautic industry. As a new processing technique, ultrashort pulse laser processing has the advantages of micro scale, strong controllability, no material restriction and non-contact. It is expected to realize the high-precision processing of fiber composites. In this paper, on the basis of the current research on ultrafast laser processing carbon fiber reinforced polymer (CFRP) was reviewed, and the mechanisms of ultrafast laser processing CFRP and methods to improve the machining quality were discussed. Further, the research direction and content for the purpose of breaking through the bottleneck of high-precision machining technology in aerospace industry are prospected, which provides a technical route and possible solutions for precision machining meeting the high-precision and large-scale requirements of the aerospace industry.

     

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