超声导波技术用于飞机结冰探测的实验研究

Experimental Study on Ultrasonic Guided Wave Technology for Aircraft Icing Detection

能有效地探测到由云层中的过冷水滴引起的飞机结冰是飞机安全飞行的必要保障。该文以超声导波和结构健康技术在3种传感器布局方式下,对所监控区域的结冰情况进行图像重构。实验结果表明,在圆形布局下结冰图像重构质量较好;在平行布局下,也能在平行线中心附近较好地反映结冰情况;在机翼布局下,能检测到结冰存在,并且能大致反映结冰程度最严重的区域。该文还利用了S0模态截断思想,能减小水或其他液体对重构图像质量的影响。

Aircraft icing caused by colder water droplets in the clouds has troubled the aviation industry for decades,and it is an essential guarantee for aircraft safe flight to effectively detect aircraft icing.In this paper,the ultrasonic guided wave technique and the structural health technology are used to reconstruct the icing in the monitored area under three kinds of sensors.The experimental results show that the reconstructed image quality is good under the circular layout.In the parallel layout,it can also reflect the icing situation near the center of the parallel line.Under the wing configuration,the presence of ice can be detected,and can roughly reflect the most severe icing area.The idea of S 0 modal truncation is also used to reduce the influence of water or other liquids on the reconstructed image quality in this paper.