In-situ tailored repair of thermoplastic composites by overprinting of continuous carbon fibre reinforced polymer filaments

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-06-16 DOI:10.1016/j.compositesa.2025.109117

Yahui Lyu , Aonan Li , Jiang Wu , Haoqi Zhang , Dongmin Yang

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引用次数: 0

Abstract

This study proposes an efficient and convenient in-situ repair approach for damaged thermoplastic composites by 3D overprinting. Continuous carbon fibre reinforced polyphenylene sulphide (CCF/PPS) filament was employed to overprint repair patches onto conventionally manufactured woven polyamide 6 (PA6) laminates. The process window was optimised through thermal analysis of the target polymers, with a temperature range spanning from the melting point of PA6 (216.8°C) to the crystallisation point of PPS (227.6°C). A nominated interface temperature of 220 °C was evidenced as the most effective, raising the tensile strength of repaired specimens to 205.9 MPa, an improvement of 35 % compared to open-hole laminates and a recovery of nearly 50 % of the strength lost relative to undamaged specimens. Additionally, bio-inspired spider web printing paths were tailored for static indention loading, restoring 94 % of the original laminate strength while reducing material usage by 67 % compared to conventional unidirectional patches. This novel overprinting approach offers a highly efficient and flexible solution for repairing damaged thermoplastic structures.

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连续碳纤维增强聚合物长丝叠印热塑性复合材料的原位定制修复

本研究提出了一种高效、便捷的热塑性复合材料三维叠印原位修复方法。采用连续碳纤维增强聚苯硫醚（CCF/PPS）长丝将修复贴片套印到传统制造的编织聚酰胺6 （PA6）层压板上。通过对目标聚合物的热分析，优化了工艺窗口，温度范围从PA6的熔点（216.8°C）到PPS的结晶点（227.6°C）。220℃的界面温度是最有效的，修复后试样的抗拉强度提高到205.9 MPa，比裸眼层合板提高35%，比未损伤试样恢复近50%的强度损失。此外，仿生蜘蛛网打印路径是为静态压痕负载量身定制的，与传统的单向贴片相比，可以恢复94%的原始层压板强度，同时减少67%的材料使用量。这种新颖的叠印方法为修复受损热塑性塑料结构提供了高效、灵活的解决方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.