应用热波成像技术检测飞机结构隐蔽腐蚀的实验研究

Experimental Research on Thermal Wave Imaging Inspection for Hidden Corrosion on Airframe

利用热波成像技术,对加速腐蚀试样和实际飞机结构腐蚀件进行了隐蔽腐蚀检测的实验研究。结果表明:这一技术可以很好地检测出隐蔽腐蚀,不受腐蚀产物残留与否以及表面漆层的影响,对于剥层腐蚀特别有效;该方法获得的腐蚀坑的图像细节丰富、直观易懂;同时,该技术能够检测胶结缝内部的缺胶和脱胶。

With acceleratedly corroded samples and real corroded airframe parts,application of thermal wave imaging technology to hidden corrosion inspection was experimentally studied.The results show that this technology is able to reveal hidden corrosion,especially good for exfoliation corrosion,regardless corrosion product remains or not as well as presence of paint on the surface.The image of corrosion has details and is easy to understand.This technology is able to reveal disbond as well as lack of sealant inside bonded joints.