Carbon nanomaterial-coated piezoresistive fiber sensors are finding applications in many industries for in-situ process and structural health monitoring of composites. These nanomaterials are embedded within the composite in two different ways; either by incorporating them in the matrix, or by depositing them on fibrous reinforcements. This review highlights the utility of carbon nanomaterials as deposition materials for fiber reinforcements and turning them into sensors for process monitoring during manufacturing and structural health monitoring during in-service life. A number of different strategies to coat carbon nanomaterials on fiber reinforcements are also discussed. A review of various monitored parameters during composites manufacturing such as reinforcement compaction response, flow-front tracking, and resin gelation and cure, as well as damage detection of finished composites using nanomaterial-coated in-situ sensors is also presented. Finally, current and future challenges are discussed where new types of 2D materials and their hybrids for next generation smart sensors are highlighted.

碳纳米材料涂层的压阻纤维传感器在复合材料的原位过程和结构健康监测中发现了许多行业的应用。这些纳米材料以两种不同的方式嵌入复合材料中。通过将它们掺入基质中，或将其沉积在纤维增强材料上。这篇综述着重介绍了碳纳米材料作为纤维增强材料的沉积材料的实用性，并将其转变为传感器，用于制造过程中的过程监控以及使用寿命中的结构健康监控。还讨论了在碳纤维增强材料上涂覆碳纳米材料的许多不同策略。审查复合材料制造过程中的各种监控参数，例如增强压实响应，流动前沿跟踪以及树脂胶凝和固化，还介绍了使用复合材料包覆的原位传感器对复合材料进行损伤检测的方法。最后，讨论了当前和未来的挑战，重点介绍了用于下一代智能传感器的新型2D材料及其混合材料。