航空发动机叶片的内窥涡流集成化原位检测

Borescope and Eddy Current Integrative In-situ Detecting Defects in Aeroengine Laminas

目前内窥检测是航空发动机叶片原位检测的唯一方法,但是内窥检测对于叶片裂纹缺陷的检测效果不理想。为此,提出内窥涡流集成化检测技术,使这两种方法的优势互补,实现对航空发动机叶片的原位检测。研制了一种可用于航空发动机叶片原位检测的内窥涡流集成化检测探头,给出了航空发动机叶片的检测实例。检测结果表明:内窥涡流集成化检测技术的缺陷检测能力高,并且可以实现对裂纹缺陷的定量评估,因此较单一的内窥检测更有优越性,具有很高的实际应用价值。

At present, borescope inspection is the only technique for in-situ detecting defects in aeroengine laminas, but the inspection performance is poor by using borescope to detect cracks in laminas. Therefore, borescope and eddy current integrative testing technique was presented, combining the advantages of these two techniques. The technique can achieve in-situ detecting defects in aeroengine laminas. A borescope and eddy current integrative testing probe used for aeroengine laminas was developed. A testing example of aeroengine lamina using the probe was given. The testing results show that the inspection performance is high using boreseope and eddy current integrative testing techniques, and the cracks can be estimated quantitatively. It was concluded that the integrative testing technique is superior to single borescope inspection, and it is very valuable for practical application.