Towards repairable composites: healing of mode I and mode II delaminations in woven glass fibre and vitrimer matrix laminates

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-06-21 DOI:10.1016/j.compositesb.2025.112738

Alejandro Lopez-Olmedo, Roberto Frassine, Marco L. Longana

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引用次数: 0

Abstract

The widespread use of thermoset matrix composite has led to an increase in hardly manageable composite waste, driving research into alternative material concepts promoting circularity through repairing strategies. In this study, the intrinsic healing of imine-based vitrimer matrix composite after delamination is investigated. Laminates of woven glass reinforced composite were tested in Double Cantilever Beam and Three-Point End-Notched Flexure tests, followed by an ex-situ delamination healing process and retesting. A remarkable recovery of fracture properties was observed: repairing efficiencies of 91 % and 98 % were obtained for mode I and II interlaminar fracture toughness, respectively. Visual inspections confirmed successful healing of damage across all cases. The fracture surface was evaluated for mode I, showing that the crack in the virgin state is a preferred path for the post-healed delamination. Results demonstrate that imine-based vitrimer composites have significant potential of healing delamination cracks.

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迈向可修复复合材料：编织玻璃纤维和玻璃体基质层压板中I型和II型分层的愈合

热固性基复合材料的广泛使用导致了难以管理的复合材料废物的增加，推动了通过修复策略促进循环的替代材料概念的研究。本研究对亚胺基玻璃体基复合材料分层后的内在愈合进行了研究。在双悬臂梁和三点端缺口弯曲试验中测试了编织玻璃增强复合材料层合板，随后进行了原位分层愈合过程和重新测试。观察到断裂性能的显著恢复：I型和II型层间断裂韧性的修复效率分别为91%和98%。目视检查证实所有病例的损伤都成功愈合。对断口表面进行模式I评价，表明处于原始状态的裂纹是愈合后分层的首选路径。结果表明，亚胺基玻璃体复合材料具有显著的分层裂缝愈合潜力。

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 B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.