涂层覆盖下飞机蒙皮腐蚀损伤识别与评估  

Identification and Evaluation of Corrosion Damage in Aircraft Skin Covered by Coatings

作　　者：单柏荣 仇淞平 商梓 樊伟杰 陈新波 李小丽 SHAN Borong;QIU Songping;SHANG Zhi;FAN Weijie;CHEN Xinbo;LI Xiaoli(Qingdao Branch of Naval Aeronautical University,Shandong Qingdao 266041,China;93395 Unit of PLA,Shandong Gaomi 261500,China)

机构地区：[1]海军航空大学青岛校区,山东青岛266041 [2]93395部队,山东高密261500

出　　处：《装备环境工程》2025年第4期44-50,共7页Equipment Environmental Engineering

基　　金：国家自然科学基金(52101392);山东省自然科学基金(ZR202102240842)。

摘　　要：目的解决涂层覆盖下飞机蒙皮腐蚀损伤快速检测与定量评估的技术难题。方法针对飞机铝合金腐蚀损伤特点,采用阵列涡流检测技术作为原位检测方法,结合实际工况,开展定量评价方法研究。设计和试验预制人工缺陷的试块,确定蒙皮腐蚀损伤检测的最佳频率,找出阵列涡流检测信号的变化规律。结果随着检测频率的增高,检测灵敏度逐渐增高。当检测频率超过1.0 MHz时,缺陷边缘电压过高,从而产生畸变,影响对缺陷的定量。通过正态概率分布和一元线性回归分析,得出缺陷深度与检测信号的定量关系符合y=1559.7x+8.264,解决了阵列涡流检测仪阻抗显示定量评估的难题。结论阵列涡流检测技术可有效解决涂层覆盖下飞机蒙皮损伤的检测问题,在检测效率、信号显示、定量评估等方面具有明显优势,得到的定量关系符合实际情况,可实现自动评估,对实际应用具有指导意义。The work aims to solve the technical problem of rapid detection and quantitative evaluation of corrosion damage of aircraft skin under coatings.Combined with the actual working conditions,array eddy current testing was selected as the in-situ nondestructive testing method to study the quantitative evaluation method for corrosion damage characteristics of Al alloy.Through the design and testing of prefabricated defect test blocks,the optimal detection frequency for detecting corrosion damage on the skin of aircraft was determined and the change rules of the array eddy current detection signal were obtained.The detection sensitivity gradually rose with the detection frequency increased.When the detection frequency exceeded 1.0 MHz,the voltage at the defect edge became excessively high,leading to distortion and affecting the quantification of defects.Through normal probability distribution and univariate linear-regression analysis,the quantitative relationship y=1559.7x+8.264 between defect depth and detection signals was obtained,and the problem of quantitative evaluation of array eddy current instrument impedance display was solved.The array eddy current detection technology can effectively solve the problem in detecting the damage of the aircraft skin under coatings and has obvious advantages in terms of detection efficiency,signal display and quantitative evaluation and the quantitative relationship obtained accords with the actual situation,so it can realize automatic evaluation and has guiding significance for practical application.

关 键 词：飞机蒙皮 阵列涡流 原位无损检测 定量评估 涂层 腐蚀损伤 

分 类 号：TG172[金属学及工艺—金属表面处理]