In-line Eddy-Current Characterisation of Carbon Fibre Composites

碳纤维增强聚合物（CFRP）材料已成为航空航天工业的主力。自动纤维铺放（AFP）系统提高了复合材料的制造速度，但严重缺乏定量质量监控技术，无法确保满足制造公差。一种潜在的解决方案是采用高频涡流检测（ECT），这是一种非接触和高速测量，使其适合在线监测。检查AFP部件的理想时间是在制造过程中，以便在可以轻松纠正的情况下及早发现故障。然而，未固化的复合材料部件的性能表现与固化的复合材料非常不同，并且检测环境也可能引入不必要的误差源。本研究旨在发展一种用于CFRP材料特性分析的在线高速涡流检测技术。

Carbon fibre reinforced polymers (CFRP) materials have become a workhorse of the aerospace industry. Automated fibre placement (AFP) systems have increased the rate at which composite materials can be manufactured, but there is a severe lack in quantitative quality monitoring techniques that can ensure manufacturing tolerances are met. One potential solution is to employ high-frequency eddy-current testing (ECT), which is non-contact and a high-speed measurement, making it suitable for in-line monitoring. The ideal time to inspect AFP parts is during manufacture so as to detect faults early when they can be corrected easily. However, the properties of uncured composite components behave very differently to cured composites and the inspection environments can also introduce unwanted sources of error. This research aims to develop an in-line and high-speed eddy-current inspection technique for characterisation of CFRP materials.