The invention belongs to the technical field of aircraft damage detection, and provides an aircraft skin dark damage nondestructive detection method based on high-precision electromagnetic imaging, which comprises the following steps of: aligning a transmitting antenna and a receiving antenna of high-precision electromagnetic imaging equipment with a measured aircraft, starting the equipment to work, transmitting a broadband signal, receiving an echo signal of the aircraft, and detecting the aircraft skin dark damage. Recording and storing the echo signal; imaging measurement is carried out on the side surface and the back skin of the aircraft by adopting a top view angle, and imaging measurement is carried out on the side surface and the belly of the aircraft by adopting a top view angle; after emission measurement and echo recording, collected echo signals are combined with attitude data of the optical fiber gyroscope for offline imaging processing, and aircraft imaging pictures at different positions and different pitching angles are obtained; in the detection imaging picture, the pixel point with abnormally high brightness is detected as a strong reflection point, and the area where the strong reflection point is located is a potential damage position. According to the scheme, nondestructive testing of the aircraft skin dark damage can be carried out simply, quickly, conveniently, visually and efficiently.
本发明属于飞机损伤检测技术领域,提供一种基于高精度电磁成像的飞机蒙皮暗伤无损检测方法,包括:高精度电磁成像设备的发射天线和接收天线对准被测量飞机,设备开机工作,发射宽带信号,并接收飞机的回波信号,对回波信号进行记录存储;采用俯视视角对飞机的侧面和机背蒙皮的成像测量,采用仰视视角对飞机的侧面和机腹的成像测量;通过发射测量和回波记录后,将采集的回波信号结合光纤陀螺仪的姿态数据进行离线成像处理,获取不同位置、不同俯仰角度的飞机成像图片;在检测成像图片中,检测亮度异常高的像素点为强反射点,强反射点所在区域为潜在的损伤位置。上述方案可以使用简单、快速便捷、直观高效地进行飞机蒙皮暗伤无损检测。
Aircraft skin dark damage nondestructive testing method based on high-precision electromagnetic imaging
一种基于高精度电磁成像的飞机蒙皮暗伤无损检测方法
2024-09-20
Patent
Electronic Resource
Chinese
IPC: | G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / G01S RADIO DIRECTION-FINDING , Funkpeilung |
Pulsed Holographic Nondestructive Testing On Aircraft
SPIE | 1983
|Array pulsed eddy current imaging technique for nondestructive testing of aging aircraft
Tema Archive | 2008
|