Abstract:As silicon carbide fibre/silicon carbide ceramicmatrix composites (SiCf/SiC CMCs) have become widely used in high temperature hot-section components in aerospace and aero-engines, nondestructive testing and evaluation (NDT & E) is particularly important. Due to the special high temperature manufacturing process, internal microstructure and defect characteristics of SiCf/SiC CMCs, it is difficult to realize reliable NDT & E of SiCf/SiC CMCs by using existing detection techniques and defect evaluation methods. Based on the studies in this field in the recent years, the defects and characteristics of SiCf/SiC CMCs are analyzed. The research progress in NDT&E of SiCf/SiC CMCs is reviewed. The main technical challenges in NDT&E of SiCf/SiC CMCs are presented. The future development tendency in NDT & E of SiCf/SiC CMCs is given. At present, high-resolution digital X–ray imaging and high-resolution asymmetric-frequency ultrasonic detection techniques have become very important methods for the NDT & E of SiCf/SiC CMCs, and good practical testing and applications have been obtained.
刘松平,刘菲菲,章清乐,李治应. SiCf/SiC复合材料无损检测与评估技术进展[J]. 航空制造技术, 2020, 63(19): 24-30.
LIU Songping, LIU Feifei, ZHANG Qingle, LI Zhiying. Progress in Non-Destructive Testing and Evaluation of SiCf /SiC Composites. Aeronautical Manufacturing Technology, 2020, 63(19): 24-30.