Real-time monitoring of the additive manufacturing process offers the promise of guaranteeing product quality and increasing the efficiency of the printing process. This paper summarizes research results for the in situ monitoring of the printing process for the fused filament fabrication process. To have a systematic and comprehensive summary, different methods, devices, and achievements in a range of monitoring systems for 3D printing are described. Sensor types and devices used in the literature for printer health-state monitoring and printing process product quality monitoring are summarized. Discussion of current and future research directions concludes the review.

中文翻译：

---

熔丝制造过程的现场监测：综述

增材制造过程的实时监控有望保证产品质量并提高印刷过程的效率。本文总结了对熔融长丝制造过程印刷过程进行现场监测的研究结果。为了获得系统而全面的摘要，本文描述了用于3D打印的一系列监视系统中的不同方法，设备和成就。总结了文献中用于打印机健康状态监视和打印过程产品质量监视的传感器类型和设备。对当前和未来研究方向的讨论总结了本综述。