This perspective details the grand challenges of designing and manufacturing multifunctional materials to impart autonomous property recovery. The susceptibility of advanced engineering composites to brittle fracture has led to the emergence of self-healing materials. This functionality has been demonstrated in bulk polymers and fibre-reinforced composites; most recently through the addition of vascular networks into the host material. These network systems enable the healing agents to be transported over long distances and provide a means by which both the resin and hardener can be replenished, thus overcoming the inherent limitations of capsule-based systems. To date, vascule fabrication methods include machining, fugitive scaffold processes, a lost-wax process and the vaporisation of sacrificial components, but recent developments in additive manufacturing (AM) technologies have paved the way for more efficient, bio-inspired vascular designs (VDs) to be realised. This perspec...

中文翻译：

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血管自愈设计与制造的巨大挑战

该观点详细介绍了设计和制造多功能材料以实现自主财产回收的巨大挑战。先进的工程复合材料对脆性断裂的敏感性导致了自愈材料的出现。这种功能已经在本体聚合物和纤维增强复合材料中得到了证明。最近通过将血管网络添加到宿主材料中。这些网络系统使治疗剂能够长距离运输，并提供一种可以补充树脂和固化剂的方式，从而克服了基于胶囊的系统的固有局限性。迄今为止，血管的制造方法包括机加工，逃逸的脚手架工艺，失蜡工艺和牺牲性成分的汽化，但是增材制造（AM）技术的最新发展为实现更有效，受生物启发的血管设计（VD）铺平了道路。这个观点...